Compilation failure on Windows 10 for mingw 32bit, and for mingw 64bit

[Fulguritude]

Pulled most recent commit to master. My shell is cygwin. Ran autogen.sh.

Configured for 32bit mingw with:

 ./configure --enable-static CC=i686-w64-mingw32-gcc

Ran make:

$ make
make -j9  all-recursive
make[1]: Entering directory '/home/fulguritude/LEDR/wolfssl'
make[2]: Entering directory '/home/fulguritude/LEDR/wolfssl'
make[2]: warning: -j9 forced in submake: resetting jobserver mode.
 CC       wolfcrypt/benchmark/benchmark.o
 CC       wolfcrypt/src/src_libwolfssl_la-hmac.lo
 CC       wolfcrypt/src/src_libwolfssl_la-hash.lo
 CC       wolfcrypt/src/src_libwolfssl_la-cpuid.lo
 CC       wolfcrypt/src/src_libwolfssl_la-random.lo
 CC       wolfcrypt/src/src_libwolfssl_la-sha256.lo
 CC       wolfcrypt/src/src_libwolfssl_la-rsa.lo
 CC       wolfcrypt/src/src_libwolfssl_la-aes.lo
 CC       wolfcrypt/src/src_libwolfssl_la-sha.lo
 CC       wolfcrypt/src/src_libwolfssl_la-sha512.lo
 CC       wolfcrypt/src/src_libwolfssl_la-sha3.lo
 CC       wolfcrypt/src/src_libwolfssl_la-logging.lo
 CC       wolfcrypt/src/src_libwolfssl_la-wc_port.lo
 CC       wolfcrypt/src/src_libwolfssl_la-error.lo
 CC       wolfcrypt/src/src_libwolfssl_la-wc_encrypt.lo
 CC       wolfcrypt/src/src_libwolfssl_la-signature.lo
 CC       wolfcrypt/src/src_libwolfssl_la-wolfmath.lo
In file included from wolfcrypt/src/wc_port.c:28:
wolfcrypt/src/wc_port.c: In function ‘wc_ReadDirFirst’:
./wolfssl/wolfcrypt/types.h:508:35: error: ‘strncpy’ output may be truncated copying between 2 and 255 bytes from a string of length 259 [-Werror=stringop-truncation]
 508 |         #define XSTRNCPY(s1,s2,n) strncpy((s1),(s2),(n))
     |                                   ^~~~~~~~~~~~~~~~~~~~~~
wolfcrypt/src/wc_port.c:459:13: note: in expansion of macro ‘XSTRNCPY’
 459 |             XSTRNCPY(ctx->name + pathLen + 1,
     |             ^~~~~~~~
wolfcrypt/src/wc_port.c: In function ‘wc_ReadDirNext’:
./wolfssl/wolfcrypt/types.h:508:35: error: ‘strncpy’ output may be truncated copying between 0 and 255 bytes from a string of length 259 [-Werror=stringop-truncation]
 508 |         #define XSTRNCPY(s1,s2,n) strncpy((s1),(s2),(n))
     |                                   ^~~~~~~~~~~~~~~~~~~~~~
wolfcrypt/src/wc_port.c:595:13: note: in expansion of macro ‘XSTRNCPY’
 595 |             XSTRNCPY(ctx->name + pathLen + 1,
     |             ^~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:4922: wolfcrypt/src/src_libwolfssl_la-wc_port.lo] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/home/fulguritude/LEDR/wolfssl'
make[1]: *** [Makefile:5718: all-recursive] Error 1
make[1]: Leaving directory '/home/fulguritude/LEDR/wolfssl'
make: *** [Makefile:3457: all] Error 2

Result: does not compile.

Then tried the 64bit version of mingw

./configure --enable-static CC=x86_64-w64-mingw32-gcc

and ran make:

 make
make -j9  all-recursive
make[1]: Entering directory '/home/fulguritude/LEDR/wolfssl'
make[2]: Entering directory '/home/fulguritude/LEDR/wolfssl'
make[2]: warning: -j9 forced in submake: resetting jobserver mode.
  CC       wolfcrypt/benchmark/benchmark.o
  CC       wolfcrypt/src/src_libwolfssl_la-hmac.lo
  CC       wolfcrypt/src/src_libwolfssl_la-hash.lo
  CC       wolfcrypt/src/src_libwolfssl_la-cpuid.lo
  CC       wolfcrypt/src/src_libwolfssl_la-random.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha256.lo
  CC       wolfcrypt/src/src_libwolfssl_la-rsa.lo
  CC       wolfcrypt/src/src_libwolfssl_la-aes.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha512.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha3.lo
  CC       wolfcrypt/src/src_libwolfssl_la-logging.lo
  CC       wolfcrypt/src/src_libwolfssl_la-error.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_port.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_encrypt.lo
  CC       wolfcrypt/src/src_libwolfssl_la-signature.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wolfmath.lo
  CC       wolfcrypt/src/src_libwolfssl_la-memory.lo
  CC       wolfcrypt/src/src_libwolfssl_la-dh.lo
  CC       wolfcrypt/src/src_libwolfssl_la-asn.lo
  CC       wolfcrypt/src/src_libwolfssl_la-coding.lo
  CC       wolfcrypt/src/src_libwolfssl_la-poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-md5.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha20_poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-tfm.lo
  CC       wolfcrypt/src/src_libwolfssl_la-ecc.lo
  CC       src/libwolfssl_la-internal.lo
  CC       src/libwolfssl_la-wolfio.lo
  CC       src/libwolfssl_la-keys.lo
  CC       src/libwolfssl_la-ssl.lo
  CC       src/libwolfssl_la-tls.lo
wolfcrypt/src/tfm.c:62: error: ignoring #pragma warning  [-Werror=unknown-pragmas]
   62 |     #pragma warning(disable:4127)
      |
wolfcrypt/src/tfm.c: In function ‘fp_set_int’:
wolfcrypt/src/tfm.c:3768:9: error: comparison is always true due to limited range of data type [-Werror=type-limits]
 3768 |   if (b < FP_DIGIT_MAX) {
      |         ^
  CC       src/libwolfssl_la-tls13.lo
cc1: all warnings being treated as errors
make[2]: *** [Makefile:5111: wolfcrypt/src/src_libwolfssl_la-tfm.lo] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/home/fulguritude/LEDR/wolfssl'
make[1]: *** [Makefile:5718: all-recursive] Error 1
make[1]: Leaving directory '/home/fulguritude/LEDR/wolfssl'
make: *** [Makefile:3457: all] Error 2

Result: does not compile either.

PS: I also tried to build without the "enable-static" option: same result.

[embhorn]

Hello @Fulguritude

Thanks for contacting wolfSSL Support. Was this working previously and the update broke your build? It looks like the standard lib headers are missing.

Thanks,
Eric @ wolfSSL

[Fulguritude]

Hello @embhorn

A colleague had made a build of libwolfssl for windows around the time I built libwolfssl.24.1.0 for Linux; we had some compatibility issues on Linux recently (probably due to some things being linked statically and others dynamically) which were fixed by updating everything on every Linux to 24.3.0.

For the sake of update and coherence, I'm trying to update on Windows as well, and make everything static (things still work on windows with the dll version from the time of 24.1.0). Do note that the build does seem to still be working on Windows when I don't specify the CC I want; but we'd like to build with mingw because our Windows devs use it rather than msvc in their pipeline. We'd also like to build both 32bit and 64bit version for compatibility issues.

I'm afraid I can't answer your question better than "we recall 32bit and 64bit mingw builds on Windows to be working before, at the time of 24.1.0", but I do not know what configuration (nor compiler) was used at the time. We think my colleague managed to build with mingw successfully then; he's pretty confident he had, though does not recall how he did it, and has no history or logs to verify.

NB: I tried to build from a raw git clone yesterday with the same issue

[elms]

I was able to work around this with a small change, but need to clean it up to coexist with other build configurations.

@Fulguritude can you confirm this addresses your build issue?

[embhorn]

Hi @Fulguritude

We recently had an engineer set up for the Cygwin environment. Could you please review the instructions here:
https://www.wolfssl.com/building-wolfssl-cygwin-windows/

[Fulguritude]

Hello @elms. Your fix solves some of the compilation issues for 64bit, and does not affect 32bit. However, the build still fails, on linking this time.

$ make
make -j9  all-recursive
make[1]: Entering directory '/home/fulguritude/LEDR/wolfssl'
make[2]: Entering directory '/home/fulguritude/LEDR/wolfssl'
make[2]: warning: -j9 forced in submake: resetting jobserver mode.
  CC       wolfcrypt/benchmark/benchmark.o
  CC       wolfcrypt/src/src_libwolfssl_la-hmac.lo
  CC       wolfcrypt/src/src_libwolfssl_la-hash.lo
  CC       wolfcrypt/src/src_libwolfssl_la-cpuid.lo
  CC       wolfcrypt/src/src_libwolfssl_la-random.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha256.lo
  CC       wolfcrypt/src/src_libwolfssl_la-rsa.lo
  CC       wolfcrypt/src/src_libwolfssl_la-aes.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha512.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha3.lo
  CC       wolfcrypt/src/src_libwolfssl_la-logging.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_port.lo
  CC       wolfcrypt/src/src_libwolfssl_la-error.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_encrypt.lo
  CC       wolfcrypt/src/src_libwolfssl_la-signature.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wolfmath.lo
  CC       wolfcrypt/src/src_libwolfssl_la-memory.lo
  CC       wolfcrypt/src/src_libwolfssl_la-dh.lo
  CC       wolfcrypt/src/src_libwolfssl_la-asn.lo
  CC       wolfcrypt/src/src_libwolfssl_la-coding.lo
  CC       wolfcrypt/src/src_libwolfssl_la-poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-md5.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha20_poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-tfm.lo
  CC       wolfcrypt/src/src_libwolfssl_la-ecc.lo
  CC       src/libwolfssl_la-internal.lo
  CC       src/libwolfssl_la-keys.lo
  CC       src/libwolfssl_la-wolfio.lo
  CC       src/libwolfssl_la-ssl.lo
  CC       src/libwolfssl_la-tls.lo
  CC       src/libwolfssl_la-tls13.lo
  CC       wolfcrypt/test/test.o
  CC       examples/benchmark/tls_bench.o
  CC       examples/client/client.o
  CC       examples/echoclient/echoclient.o
  CC       examples/echoserver/echoserver.o
  CC       examples/server/server.o
  CC       wolfcrypt/test/testsuite_testsuite_test-test.o
  CC       examples/client/testsuite_testsuite_test-client.o
  CC       examples/echoclient/testsuite_testsuite_test-echoclient.o
  CC       examples/echoserver/testsuite_testsuite_test-echoserver.o
  CC       examples/server/testsuite_testsuite_test-server.o
  CC       testsuite/testsuite_test-testsuite.o
  CC       tests/unit_test-unit.o
  CC       tests/unit_test-api.o
  CC       tests/unit_test-suites.o
  CC       tests/unit_test-hash.o
  CC       tests/unit_test-srp.o
  CC       examples/client/tests_unit_test-client.o
  CC       examples/server/tests_unit_test-server.o
  CCLD     src/libwolfssl.la
/usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: src/.libs/libwolfssl_la-wolfio.o:wolfio.c:(.text+0x13): undefined reference to `__imp_recv'
/usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: src/.libs/libwolfssl_la-wolfio.o:wolfio.c:(.text+0x2a): undefined reference to `__imp_WSAGetLastError'
/usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: src/.libs/libwolfssl_la-wolfio.o:wolfio.c:(.text+0x93): undefined reference to `__imp_send'
/usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: src/.libs/libwolfssl_la-wolfio.o:wolfio.c:(.text+0xa2): undefined reference to `__imp_WSAGetLastError'
/usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: src/.libs/libwolfssl_la-wolfio.o:wolfio.c:(.text+0xf5): undefined reference to `__imp_recv'
/usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: src/.libs/libwolfssl_la-wolfio.o:wolfio.c:(.text+0x105): undefined reference to `__imp_send'
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:4047: src/libwolfssl.la] Error 1
make[2]: Leaving directory '/home/fulguritude/LEDR/wolfssl'
make[1]: *** [Makefile:5718: all-recursive] Error 1
make[1]: Leaving directory '/home/fulguritude/LEDR/wolfssl'
make: *** [Makefile:3457: all] Error 2

@embhorn I have all these packages already installed, here is confirmation:

fulguritude@MSI ~/Workspace/wolfssl
$ which unzip
/usr/bin/unzip

fulguritude@MSI ~/Workspace/wolfssl
$which autoconf
/usr/bin/autoconf

fulguritude@MSI ~/Workspace/wolfssl
$ which automake
/usr/bin/automake

fulguritude@MSI ~/Workspace/wolfssl
$ which gcc-core
which: no gcc-core in (/usr/local/bin:/usr/bin:/cygdrive/c/Python39/Scripts:/cygdrive/c/Python39:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Windows/System32/OpenSSH:/cygdrive/c/Program Files (x86)/NVIDIA Corporation/PhysX/Common:/cygdrive/c/Program Files/dotnet:/cygdrive/c/Program Files/nodejs:/cygdrive/c/ProgramData/chocolatey/bin:/cygdrive/c/Program Files/Git/cmd:/cygdrive/c/Users/fulguritude/AppData/Local/Microsoft/WindowsApps:/cygdrive/c/Users/fulguritude/.dotnet/tools:/cygdrive/c/Users/fulguritude/AppData/Roaming/npm:/usr/lib/lapack)

fulguritude@MSI ~/Workspace/wolfssl
$ apt-cyg install gcc-core
Package gcc-core is already installed, skipping

fulguritude@MSI ~/Workspace/wolfssl
$ which libtool
/usr/bin/libtool

fulguritude@MSI ~/Workspace/wolfssl
$ which make
/usr/bin/make

Also, a simple

$> ./configure --enable-static
$> make

does build fine; it's just not the compilers and architectures (32bit AND 64bit) we need to make sure we avoid any issue.

[embhorn]

Hi @Fulguritude

Those linker errors are for system library routines. This sounds similar:
https://stackoverflow.com/questions/2033608/mingw-linker-error-winsock

Could you try adding a linker flag to the configure:
./configure --enable-static CC=i686-w64-mingw32-gcc LDFLAGS="-lws2_32"

[Fulguritude]

I tried it with ./configure --enable-static CC=i686-w64-mingw32-gcc LDFLAGS="-lws2_32", and I got a failing build for 32 bit:

$ make
make -j9  all-recursive
make[1]: Entering directory '/home/fulguritude/Workspace/wolfssl'
make[2]: Entering directory '/home/fulguritude/Workspace/wolfssl'
make[2]: warning: -j9 forced in submake: resetting jobserver mode.
  CC       wolfcrypt/benchmark/benchmark.o
  CC       wolfcrypt/src/src_libwolfssl_la-hmac.lo
  CC       wolfcrypt/src/src_libwolfssl_la-hash.lo
  CC       wolfcrypt/src/src_libwolfssl_la-cpuid.lo
  CC       wolfcrypt/src/src_libwolfssl_la-random.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha256.lo
  CC       wolfcrypt/src/src_libwolfssl_la-rsa.lo
  CC       wolfcrypt/src/src_libwolfssl_la-aes.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha512.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha3.lo
  CC       wolfcrypt/src/src_libwolfssl_la-logging.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_port.lo
  CC       wolfcrypt/src/src_libwolfssl_la-error.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_encrypt.lo
  CC       wolfcrypt/src/src_libwolfssl_la-signature.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wolfmath.lo
In file included from wolfcrypt/src/wc_port.c:28:
wolfcrypt/src/wc_port.c: In function ‘wc_ReadDirFirst’:
./wolfssl/wolfcrypt/types.h:508:35: error: ‘strncpy’ output may be truncated copying between 2 and 255 bytes from a string of length 259 [-Werror=stringop-truncation]
  508 |         #define XSTRNCPY(s1,s2,n) strncpy((s1),(s2),(n))
      |                                   ^~~~~~~~~~~~~~~~~~~~~~
wolfcrypt/src/wc_port.c:459:13: note: in expansion of macro ‘XSTRNCPY’
  459 |             XSTRNCPY(ctx->name + pathLen + 1,
      |             ^~~~~~~~
wolfcrypt/src/wc_port.c: In function ‘wc_ReadDirNext’:
./wolfssl/wolfcrypt/types.h:508:35: error: ‘strncpy’ output may be truncated copying between 0 and 255 bytes from a string of length 259 [-Werror=stringop-truncation]
  508 |         #define XSTRNCPY(s1,s2,n) strncpy((s1),(s2),(n))
      |                                   ^~~~~~~~~~~~~~~~~~~~~~
wolfcrypt/src/wc_port.c:595:13: note: in expansion of macro ‘XSTRNCPY’
  595 |             XSTRNCPY(ctx->name + pathLen + 1,
      |             ^~~~~~~~
cc1: all warnings being treated as errors
  CC       wolfcrypt/src/src_libwolfssl_la-memory.lo
make[2]: *** [Makefile:4922: wolfcrypt/src/src_libwolfssl_la-wc_port.lo] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/home/fulguritude/Workspace/wolfssl'
make[1]: *** [Makefile:5718: all-recursive] Error 1
make[1]: Leaving directory '/home/fulguritude/Workspace/wolfssl'
make: *** [Makefile:3457: all] Error 2

I then tried ./configure --enable-static CC=x86_64-w64-mingw32-gcc LDFLAGS="-lws2_32", and got a successful build for 64 bit:

$ make
make -j9  all-recursive
make[1]: Entering directory '/home/fulguritude/Workspace/wolfssl'
make[2]: Entering directory '/home/fulguritude/Workspace/wolfssl'
make[2]: warning: -j9 forced in submake: resetting jobserver mode.
  CC       wolfcrypt/benchmark/benchmark.o
  CC       wolfcrypt/src/src_libwolfssl_la-hmac.lo
  CC       wolfcrypt/src/src_libwolfssl_la-hash.lo
  CC       wolfcrypt/src/src_libwolfssl_la-cpuid.lo
  CC       wolfcrypt/src/src_libwolfssl_la-random.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha256.lo
  CC       wolfcrypt/src/src_libwolfssl_la-rsa.lo
  CC       wolfcrypt/src/src_libwolfssl_la-aes.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha512.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha3.lo
  CC       wolfcrypt/src/src_libwolfssl_la-logging.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_port.lo
  CC       wolfcrypt/src/src_libwolfssl_la-error.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_encrypt.lo
  CC       wolfcrypt/src/src_libwolfssl_la-signature.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wolfmath.lo
  CC       wolfcrypt/src/src_libwolfssl_la-memory.lo
  CC       wolfcrypt/src/src_libwolfssl_la-dh.lo
  CC       wolfcrypt/src/src_libwolfssl_la-asn.lo
  CC       wolfcrypt/src/src_libwolfssl_la-coding.lo
  CC       wolfcrypt/src/src_libwolfssl_la-poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-md5.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha20_poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-tfm.lo
  CC       wolfcrypt/src/src_libwolfssl_la-ecc.lo
  CC       src/libwolfssl_la-wolfio.lo
  CC       src/libwolfssl_la-internal.lo
  CC       src/libwolfssl_la-keys.lo
  CC       src/libwolfssl_la-ssl.lo
  CC       src/libwolfssl_la-tls.lo
  CC       src/libwolfssl_la-tls13.lo
  CC       wolfcrypt/test/test.o
  CC       examples/benchmark/tls_bench.o
  CC       examples/client/client.o
  CC       examples/echoclient/echoclient.o
  CC       examples/echoserver/echoserver.o
  CC       examples/server/server.o
  CC       wolfcrypt/test/testsuite_testsuite_test-test.o
  CC       examples/client/testsuite_testsuite_test-client.o
  CC       examples/echoclient/testsuite_testsuite_test-echoclient.o
  CC       examples/echoserver/testsuite_testsuite_test-echoserver.o
  CC       examples/server/testsuite_testsuite_test-server.o
  CC       testsuite/testsuite_test-testsuite.o
  CC       tests/unit_test-unit.o
  CC       tests/unit_test-api.o
  CC       tests/unit_test-suites.o
  CC       tests/unit_test-hash.o
  CC       tests/unit_test-srp.o
  CC       examples/server/tests_unit_test-server.o
  CC       examples/client/tests_unit_test-client.o
  CCLD     src/libwolfssl.la
  CCLD     wolfcrypt/benchmark/benchmark.exe
  CCLD     wolfcrypt/test/testwolfcrypt.exe
  CCLD     examples/benchmark/tls_bench.exe
  CCLD     examples/client/client.exe
  CCLD     examples/echoclient/echoclient.exe
  CCLD     examples/echoserver/echoserver.exe
  CCLD     examples/server/server.exe
  CCLD     tests/unit.test.exe
  CCLD     testsuite/testsuite.test.exe
make[2]: Leaving directory '/home/fulguritude/Workspace/wolfssl'
make[1]: Leaving directory '/home/fulguritude/Workspace/wolfssl'

[elms]

@Fulguritude I have a clean PR #3960 to address one of your issues. If possible can you try the builds using ./configure --enable-static --host=i686-w64-mingw32 and ./configure --enable-static --host=x86_64-w64-mingw32 and report any issues?

I wasn't able to generate the strncpy error. If you still see that can you report the version of gcc and cygwin?

[Fulguritude]

Thanks for giving this issue your attention again. TLDR: 1) 32bit success, 2) 64bit failure, 3) my gcc version. No strncpy error anymore though. Also, writing CC= used to work, but now only --host= works.

Success for 32-bit (./configure --enable-static --host=i686-w64-mingw32):

fulguritude@MSI ~/wolfssl_pr
$ ./configure --enable-static --host=i686-w64-mingw32
checking for i686-w64-mingw32-gcc... i686-w64-mingw32-gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.exe
checking for suffix of executables... .exe
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether i686-w64-mingw32-gcc accepts -g... yes
checking for i686-w64-mingw32-gcc option to accept ISO C89... none needed
checking whether i686-w64-mingw32-gcc understands -c and -o together... yes
checking build system type... x86_64-pc-cygwin
checking host system type... i686-w64-mingw32
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports the include directive... yes (GNU style)
checking whether make supports nested variables... yes
checking whether UID '197609' is supported by ustar format... yes
checking whether GID '197121' is supported by ustar format... yes
checking how to create a ustar tar archive... gnutar
checking dependency style of i686-w64-mingw32-gcc... gcc3
checking whether make supports nested variables... (cached) yes
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by i686-w64-mingw32-gcc... /usr/i686-w64-mingw32/bin/ld.exe
checking if the linker (/usr/i686-w64-mingw32/bin/ld.exe) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/i686-w64-mingw32-nm -B
checking the name lister (/usr/bin/i686-w64-mingw32-nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 8192
checking how to convert x86_64-pc-cygwin file names to i686-w64-mingw32 format... func_convert_file_cygwin_to_w32
checking how to convert x86_64-pc-cygwin file names to toolchain format... func_convert_file_noop
checking for /usr/i686-w64-mingw32/bin/ld.exe option to reload object files... -r
checking for i686-w64-mingw32-objdump... i686-w64-mingw32-objdump
checking how to recognize dependent libraries... file_magic ^x86 archive import|^x86 DLL
checking for i686-w64-mingw32-dlltool... i686-w64-mingw32-dlltool
checking how to associate runtime and link libraries... func_cygming_dll_for_implib
checking for i686-w64-mingw32-ar... i686-w64-mingw32-ar
checking for archiver @FILE support... @
checking for i686-w64-mingw32-strip... i686-w64-mingw32-strip
checking for i686-w64-mingw32-ranlib... i686-w64-mingw32-ranlib
checking command to parse /usr/bin/i686-w64-mingw32-nm -B output from i686-w64-mingw32-gcc object... ok
checking for sysroot... no
checking for a working dd... /usr/bin/dd
checking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1
checking for i686-w64-mingw32-mt... no
checking for mt... no
checking if : is a manifest tool... no
checking how to run the C preprocessor... i686-w64-mingw32-gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for i686-w64-mingw32-as... i686-w64-mingw32-as
checking for i686-w64-mingw32-dlltool... (cached) i686-w64-mingw32-dlltool
checking for i686-w64-mingw32-objdump... (cached) i686-w64-mingw32-objdump
checking for objdir... .libs
checking if i686-w64-mingw32-gcc supports -fno-rtti -fno-exceptions... no
checking for i686-w64-mingw32-gcc option to produce PIC... -DDLL_EXPORT -DPIC
checking if i686-w64-mingw32-gcc PIC flag -DDLL_EXPORT -DPIC works... yes
checking if i686-w64-mingw32-gcc static flag -static works... yes
checking if i686-w64-mingw32-gcc supports -c -o file.o... yes
checking if i686-w64-mingw32-gcc supports -c -o file.o... (cached) yes
checking whether the i686-w64-mingw32-gcc linker (/usr/i686-w64-mingw32/bin/ld.exe) supports shared libraries... yes
checking whether -lc should be explicitly linked in... yes
checking dynamic linker characteristics... Win32 ld.exe
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking whether the -Werror option is usable... yes
checking for simple visibility declarations... yes
checking size of long long... 8
checking size of long... 4
checking size of time_t... 4
checking for __uint128_t... no
checking for gethostbyname... no
checking for getaddrinfo... no
checking for gettimeofday... yes
checking for gmtime_r... no
checking for inet_ntoa... no
checking for memset... yes
checking for socket... no
checking arpa/inet.h usability... no
checking arpa/inet.h presence... no
checking for arpa/inet.h... no
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking limits.h usability... yes
checking limits.h presence... yes
checking for limits.h... yes
checking netdb.h usability... no
checking netdb.h presence... no
checking for netdb.h... no
checking netinet/in.h usability... no
checking netinet/in.h presence... no
checking for netinet/in.h... no
checking stddef.h usability... yes
checking stddef.h presence... yes
checking for stddef.h... yes
checking sys/ioctl.h usability... no
checking sys/ioctl.h presence... no
checking for sys/ioctl.h... no
checking sys/socket.h usability... no
checking sys/socket.h presence... no
checking for sys/socket.h... no
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking errno.h usability... yes
checking errno.h presence... yes
checking for errno.h... yes
checking for socket in -lnetwork... no
checking whether byte ordering is bigendian... no
checking for size_t... yes
checking for uint8_t... yes
checking dependency style of i686-w64-mingw32-gcc... gcc3
checking for cos in -lm... yes
checking for thread local storage (TLS) class... __thread
checking for debug... no
checking whether i686-w64-mingw32-gcc is Clang... no
checking whether pthreads work with -pthread... yes
checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE
checking whether more special flags are required for pthreads... no
checking for PTHREAD_PRIO_INHERIT... yes
checking for fast RSA... no
checking for library containing gethostbyname... no
checking for library containing socket... no
checking for socket in -lsocket... no
checking for vcs system... git
checking for vcs checkout... yes
checking whether the linker accepts -Werror... yes
checking whether the linker accepts -z relro -z now... no
checking whether the linker accepts -pie... yes
checking whether C compiler accepts -Werror... yes
checking whether C compiler accepts -Wno-pragmas... yes
checking whether C compiler accepts -Wall... yes
checking whether C compiler accepts -Wno-strict-aliasing... yes
checking whether C compiler accepts -Wextra... yes
checking whether C compiler accepts -Wunknown-pragmas... yes
checking whether C compiler accepts -Wthis-test-should-fail... no
checking whether C compiler accepts --param=ssp-buffer-size=1... yes
checking whether C compiler accepts -Waddress... yes
checking whether C compiler accepts -Warray-bounds... yes
checking whether C compiler accepts -Wbad-function-cast... yes
checking whether C compiler accepts -Wchar-subscripts... yes
checking whether C compiler accepts -Wcomment... yes
checking whether C compiler accepts -Wfloat-equal... yes
checking whether C compiler accepts -Wformat-security... yes
checking whether C compiler accepts -Wformat=2... yes
checking whether C compiler accepts -Wmaybe-uninitialized... yes
checking whether C compiler accepts -Wmissing-field-initializers... yes
checking whether C compiler accepts -Wmissing-noreturn... yes
checking whether C compiler accepts -Wmissing-prototypes... yes
checking whether C compiler accepts -Wnested-externs... yes
checking whether C compiler accepts -Wnormalized=id... yes
checking whether C compiler accepts -Woverride-init... yes
checking whether C compiler accepts -Wpointer-arith... yes
checking whether C compiler accepts -Wpointer-sign... yes
checking whether C compiler accepts -Wredundant-decls... yes
checking whether C compiler accepts -Wshadow... yes
checking whether C compiler accepts -Wshorten-64-to-32... no
checking whether C compiler accepts -Wsign-compare... yes
checking whether C compiler accepts -Wstrict-overflow=1... yes
checking whether C compiler accepts -Wstrict-prototypes... no
checking whether C compiler accepts -Wswitch-enum... yes
checking whether C compiler accepts -Wundef... yes
checking whether C compiler accepts -Wunused... yes
checking whether C compiler accepts -Wunused-result... yes
checking whether C compiler accepts -Wunused-variable... yes
checking whether C compiler accepts -Wwrite-strings... yes
checking whether C compiler accepts -fwrapv... yes
creating wolfssl-config - generic 4.5.0 for -lwolfssl
checking the number of available CPUs... 8
configure: adding automake macro support
configure: creating aminclude.am
configure: added jobserver support to make for 9 jobs
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating stamp-h
config.status: creating Makefile
config.status: creating wolfssl/version.h
config.status: creating wolfssl/options.h
config.status: creating cyassl/options.h
config.status: creating support/wolfssl.pc
config.status: creating rpm/spec
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
---
Running make clean...
---
Generating user options header...
option w/o begin -D is -Werror, not saving to wolfssl/options.h
option w/o begin -D is -Wno-pragmas, not saving to wolfssl/options.h
option w/o begin -D is -Wall, not saving to wolfssl/options.h
option w/o begin -D is -Wno-strict-aliasing, not saving to wolfssl/options.h
option w/o begin -D is -Wextra, not saving to wolfssl/options.h
option w/o begin -D is -Wunknown-pragmas, not saving to wolfssl/options.h
option w/o begin -D is --param=ssp-buffer-size=1, not saving to wolfssl/options.h
option w/o begin -D is -Waddress, not saving to wolfssl/options.h
option w/o begin -D is -Warray-bounds, not saving to wolfssl/options.h
option w/o begin -D is -Wbad-function-cast, not saving to wolfssl/options.h
option w/o begin -D is -Wchar-subscripts, not saving to wolfssl/options.h
option w/o begin -D is -Wcomment, not saving to wolfssl/options.h
option w/o begin -D is -Wfloat-equal, not saving to wolfssl/options.h
option w/o begin -D is -Wformat-security, not saving to wolfssl/options.h
option w/o begin -D is -Wformat=2, not saving to wolfssl/options.h
option w/o begin -D is -Wmaybe-uninitialized, not saving to wolfssl/options.h
option w/o begin -D is -Wmissing-field-initializers, not saving to wolfssl/options.h
option w/o begin -D is -Wmissing-noreturn, not saving to wolfssl/options.h
option w/o begin -D is -Wmissing-prototypes, not saving to wolfssl/options.h
option w/o begin -D is -Wnested-externs, not saving to wolfssl/options.h
option w/o begin -D is -Wnormalized=id, not saving to wolfssl/options.h
option w/o begin -D is -Woverride-init, not saving to wolfssl/options.h
option w/o begin -D is -Wpointer-arith, not saving to wolfssl/options.h
option w/o begin -D is -Wpointer-sign, not saving to wolfssl/options.h
option w/o begin -D is -Wredundant-decls, not saving to wolfssl/options.h
option w/o begin -D is -Wshadow, not saving to wolfssl/options.h
option w/o begin -D is -Wsign-compare, not saving to wolfssl/options.h
option w/o begin -D is -Wstrict-overflow=1, not saving to wolfssl/options.h
option w/o begin -D is -Wswitch-enum, not saving to wolfssl/options.h
option w/o begin -D is -Wundef, not saving to wolfssl/options.h
option w/o begin -D is -Wunused, not saving to wolfssl/options.h
option w/o begin -D is -Wunused-result, not saving to wolfssl/options.h
option w/o begin -D is -Wunused-variable, not saving to wolfssl/options.h
option w/o begin -D is -Wwrite-strings, not saving to wolfssl/options.h
option w/o begin -D is -fwrapv, not saving to wolfssl/options.h
option w/o begin -D is -fvisibility=hidden, not saving to wolfssl/options.h
not outputting (N)DEBUG to wolfssl/options.h
option w/o begin -D is -pthread, not saving to wolfssl/options.h
option w/o begin -D is -Wall, not saving to wolfssl/options.h
option w/o begin -D is -Wno-unused, not saving to wolfssl/options.h
option w/o begin -D is -Os, not saving to wolfssl/options.h


---
Configuration summary for wolfssl version 4.5.0

   * Installation prefix:        /usr/local
   * System type:                w64-mingw32
   * Host CPU:                   i686
   * C Compiler:                 i686-w64-mingw32-gcc
   * C Flags:                       -Werror -Wno-pragmas -Wall -Wno-strict-aliasing -Wextra -Wunknown-pragmas --param=ssp-buffer-size=1 -Waddress -Warray-bounds -Wbad-function-cast -Wchar-subscripts -Wcomment -Wfloat-equal -Wformat-security -Wformat=2 -Wmaybe-uninitialized -Wmissing-field-initializers -Wmissing-noreturn -Wmissing-prototypes -Wnested-externs -Wnormalized=id -Woverride-init -Wpointer-arith -Wpointer-sign -Wredundant-decls -Wshadow -Wsign-compare -Wstrict-overflow=1 -Wswitch-enum -Wundef -Wunused -Wunused-result -Wunused-variable -Wwrite-strings -fwrapv
   * C++ Compiler:
   * C++ Flags:
   * CPP Flags:
   * CCAS Flags:
   * LIB Flags:                   -pie -Werror
   * Debug enabled:              no
   * Coverage enabled:
   * Warnings as failure:        yes
   * make -j:                    9
   * VCS checkout:               yes

   Features
   * Single threaded:            no
   * Filesystem:                 yes
   * OpenSSH Build:              no
   * OpenSSL Extra API:          no
   * OpenSSL Coexist:            no
   * Old Names:                  yes
   * Max Strength Build:         no
   * Distro Build:               no
   * fastmath:                   no
   * Assembly Allowed:           yes
   * sniffer:                    no
   * snifftest:                  no
   * ARC4:                       no
   * AES:                        yes
   * AES-NI:                     no
   * AES-CBC:                    yes
   * AES-GCM:                    yes
   * AES-CCM:                    no
   * AES-CTR:                    no
   * DES3:                       no
   * IDEA:                       no
   * Camellia:                   no
   * NULL Cipher:                no
   * MD5:                        yes
   * RIPEMD:                     no
   * SHA:                        yes
   * SHA-224:                    no
   * SHA-384:                    yes
   * SHA-512:                    yes
   * SHA3:                       no
   * SHAKE256:                   no
   * BLAKE2:                     no
   * CMAC:                       no
   * keygen:                     no
   * certgen:                    no
   * certreq:                    no
   * certext:                    no
   * certgencache:               no
   * HC-128:                     no
   * RABBIT:                     no
   * CHACHA:                     yes
   * Hash DRBG:                  yes
   * PWDBASED:                   no
   * scrypt:                     no
   * wolfCrypt Only:             no
   * HKDF:                       yes
   * X9.63 KDF:                  no
   * MD4:                        no
   * PSK:                        no
   * Poly1305:                   yes
   * LEANPSK:                    no
   * LEANTLS:                    no
   * RSA:                        yes
   * RSA-PSS:                    yes
   * DSA:                        no
   * DH:                         yes
   * DH Default Parameters:      yes
   * ECC:                        yes
   * ECC Custom Curves           no
   * CURVE25519:                 no
   * ED25519:                    no
   * CURVE448:                   no
   * ED448:                      no
   * FPECC:                      no
   * ECC_ENCRYPT:                no
   * ASN:                        yes
   * Anonymous cipher:           no
   * CODING:                     yes
   * MEMORY:                     yes
   * I/O POOL:                   no
   * LIGHTY:                     no
   * HAPROXY:                    no
   * STUNNEL:                    no
   * Apache httpd:               no
   * NGINX:                      no
   * ASIO:                       no
   * LIBWEBSOCKETS:              no
   * Qt                          no
   * Qt Unit Testing             no
   * SIGNAL:                     no
   * ERROR_STRINGS:              yes
   * DTLS:                       no
   * SCTP:                       no
   * Indefinite Length:          no
   * Multicast:                  no
   * SSL v3.0 (Old):             no
   * TLS v1.0 (Old):             no
   * TLS v1.1 (Old):             yes
   * TLS v1.2:                   yes
   * TLS v1.3:                   yes
   * Post-handshake Auth:        no
   * Early Data:                 no
   * Send State in HRR Cookie:   no
   * OCSP:                       no
   * OCSP Stapling:              no
   * OCSP Stapling v2:           no
   * CRL:                        no
   * CRL-MONITOR:                no
   * Persistent session cache:   no
   * Persistent cert    cache:   no
   * Atomic User Record Layer:   no
   * Public Key Callbacks:       no
   * NTRU:                       no
   * QSH:                        no
   * Whitewood netRandom:        no
   * Server Name Indication:     no
   * ALPN:                       no
   * Maximum Fragment Length:    no
   * Trusted CA Indication:      no
   * Truncated HMAC:             no
   * Supported Elliptic Curves:  yes
   * FFDHE only in client:       no
   * Session Ticket:             no
   * Extended Master Secret:     yes
   * Renegotiation Indication:   no
   * Secure Renegotiation:       no
   * Fallback SCSV:              no
   * All TLS Extensions:         no
   * PKCS#7                      no
   * wolfSSH                     no
   * wolfSCEP                    no
   * Secure Remote Password      no
   * Small Stack:                no
   * valgrind unit tests:        no
   * LIBZ:                       no
   * Examples:                   yes
   * User Crypto:                no
   * Fast RSA:                   no
   * Single Precision:           no
   * Async Crypto:               no
   * PKCS#11:                    no
   * PKCS#12:                    yes
   * Cavium Nitox:               no
   * Cavium Octeon (Sync):       no
   * Intel Quick Assist:         no
   * ARM ASM:                    no
   * AES Key Wrap:               no
   * Write duplicate:            no
   * Xilinx Hardware Acc.:       no
   * Inline Code:                yes
   * Linux AF_ALG:               no
   * Linux devcrypto:            no
   * Crypto callbacks:           no

---
configure: WARNING: Building with shared and static library at the same time on this system may cause export/import problems when using non contemporary GNU tools.

fulguritude@MSI ~/wolfssl_pr
$ make
make -j9  all-am
make[1]: Entering directory '/home/fulguritude/wolfssl_pr'
  CC       wolfcrypt/src/src_libwolfssl_la-integer.lo
  CC       wolfcrypt/test/test.o
  CC       examples/benchmark/tls_bench.o
  CC       examples/client/client.o
  CC       examples/echoclient/echoclient.o
  CC       examples/echoserver/echoserver.o
  CC       wolfcrypt/test/testsuite_testsuite_test-test.o
  CC       examples/server/server.o
  CC       examples/client/testsuite_testsuite_test-client.o
  CC       examples/echoclient/testsuite_testsuite_test-echoclient.o
  CC       examples/echoserver/testsuite_testsuite_test-echoserver.o
  CC       examples/server/testsuite_testsuite_test-server.o
  CC       testsuite/testsuite_test-testsuite.o
  CC       tests/unit_test-unit.o
  CC       tests/unit_test-api.o
  CC       tests/unit_test-suites.o
  CC       tests/unit_test-hash.o
  CC       tests/unit_test-srp.o
  CC       examples/client/tests_unit_test-client.o
  CC       examples/server/tests_unit_test-server.o
  CC       wolfcrypt/benchmark/benchmark.o
  CC       wolfcrypt/src/src_libwolfssl_la-hmac.lo
  CC       wolfcrypt/src/src_libwolfssl_la-hash.lo
  CC       wolfcrypt/src/src_libwolfssl_la-cpuid.lo
  CC       wolfcrypt/src/src_libwolfssl_la-random.lo
  CC       wolfcrypt/src/src_libwolfssl_la-rsa.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha256.lo
  CC       wolfcrypt/src/src_libwolfssl_la-aes.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha512.lo
  CC       wolfcrypt/src/src_libwolfssl_la-logging.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_port.lo
  CC       wolfcrypt/src/src_libwolfssl_la-error.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_encrypt.lo
  CC       wolfcrypt/src/src_libwolfssl_la-signature.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wolfmath.lo
  CC       wolfcrypt/src/src_libwolfssl_la-memory.lo
  CC       wolfcrypt/src/src_libwolfssl_la-dh.lo
  CC       wolfcrypt/src/src_libwolfssl_la-asn.lo
  CC       wolfcrypt/src/src_libwolfssl_la-coding.lo
  CC       wolfcrypt/src/src_libwolfssl_la-poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-md5.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha20_poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-ecc.lo
  CC       src/libwolfssl_la-internal.lo
  CC       src/libwolfssl_la-keys.lo
  CC       src/libwolfssl_la-wolfio.lo
  CC       src/libwolfssl_la-ssl.lo
  CC       src/libwolfssl_la-tls.lo
  CC       src/libwolfssl_la-tls13.lo
  CCLD     src/libwolfssl.la
  CCLD     wolfcrypt/benchmark/benchmark.exe
  CCLD     wolfcrypt/test/testwolfcrypt.exe
  CCLD     examples/benchmark/tls_bench.exe
  CCLD     examples/client/client.exe
  CCLD     examples/echoclient/echoclient.exe
  CCLD     examples/echoserver/echoserver.exe
  CCLD     examples/server/server.exe
  CCLD     testsuite/testsuite.test.exe
  CCLD     tests/unit.test.exe
make[1]: Leaving directory '/home/fulguritude/wolfssl_pr'

Failure for 64-bit (./configure --enable-static --host=x86_64-w64-mingw32):

fulguritude@MSI ~/wolfssl_pr
$ ./configure --enable-static --host=x86_64-w64-mingw32
checking for x86_64-w64-mingw32-gcc... x86_64-w64-mingw32-gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.exe
checking for suffix of executables... .exe
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether x86_64-w64-mingw32-gcc accepts -g... yes
checking for x86_64-w64-mingw32-gcc option to accept ISO C89... none needed
checking whether x86_64-w64-mingw32-gcc understands -c and -o together... yes
checking build system type... x86_64-pc-cygwin
checking host system type... x86_64-w64-mingw32
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports the include directive... yes (GNU style)
checking whether make supports nested variables... yes
checking whether UID '197609' is supported by ustar format... yes
checking whether GID '197121' is supported by ustar format... yes
checking how to create a ustar tar archive... gnutar
checking dependency style of x86_64-w64-mingw32-gcc... gcc3
checking whether make supports nested variables... (cached) yes
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by x86_64-w64-mingw32-gcc... /usr/x86_64-w64-mingw32/bin/ld.exe
checking if the linker (/usr/x86_64-w64-mingw32/bin/ld.exe) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/x86_64-w64-mingw32-nm -B
checking the name lister (/usr/bin/x86_64-w64-mingw32-nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 8192
checking how to convert x86_64-pc-cygwin file names to x86_64-w64-mingw32 format... func_convert_file_cygwin_to_w32
checking how to convert x86_64-pc-cygwin file names to toolchain format... func_convert_file_noop
checking for /usr/x86_64-w64-mingw32/bin/ld.exe option to reload object files... -r
checking for x86_64-w64-mingw32-objdump... x86_64-w64-mingw32-objdump
checking how to recognize dependent libraries... file_magic ^x86 archive import|^x86 DLL
checking for x86_64-w64-mingw32-dlltool... x86_64-w64-mingw32-dlltool
checking how to associate runtime and link libraries... func_cygming_dll_for_implib
checking for x86_64-w64-mingw32-ar... x86_64-w64-mingw32-ar
checking for archiver @FILE support... @
checking for x86_64-w64-mingw32-strip... x86_64-w64-mingw32-strip
checking for x86_64-w64-mingw32-ranlib... x86_64-w64-mingw32-ranlib
checking command to parse /usr/bin/x86_64-w64-mingw32-nm -B output from x86_64-w64-mingw32-gcc object... ok
checking for sysroot... no
checking for a working dd... /usr/bin/dd
checking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1
checking for x86_64-w64-mingw32-mt... no
checking for mt... no
checking if : is a manifest tool... no
checking how to run the C preprocessor... x86_64-w64-mingw32-gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for x86_64-w64-mingw32-as... x86_64-w64-mingw32-as
checking for x86_64-w64-mingw32-dlltool... (cached) x86_64-w64-mingw32-dlltool
checking for x86_64-w64-mingw32-objdump... (cached) x86_64-w64-mingw32-objdump
checking for objdir... .libs
checking if x86_64-w64-mingw32-gcc supports -fno-rtti -fno-exceptions... no
checking for x86_64-w64-mingw32-gcc option to produce PIC... -DDLL_EXPORT -DPIC
checking if x86_64-w64-mingw32-gcc PIC flag -DDLL_EXPORT -DPIC works... yes
checking if x86_64-w64-mingw32-gcc static flag -static works... yes
checking if x86_64-w64-mingw32-gcc supports -c -o file.o... yes
checking if x86_64-w64-mingw32-gcc supports -c -o file.o... (cached) yes
checking whether the x86_64-w64-mingw32-gcc linker (/usr/x86_64-w64-mingw32/bin/ld.exe) supports shared libraries... yes
checking whether -lc should be explicitly linked in... yes
checking dynamic linker characteristics... Win32 ld.exe
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking whether the -Werror option is usable... yes
checking for simple visibility declarations... yes
checking size of long long... 8
checking size of long... 4
checking size of time_t... 8
checking for __uint128_t... yes
checking for gethostbyname... no
checking for getaddrinfo... no
checking for gettimeofday... yes
checking for gmtime_r... no
checking for inet_ntoa... no
checking for memset... yes
checking for socket... no
checking arpa/inet.h usability... no
checking arpa/inet.h presence... no
checking for arpa/inet.h... no
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking limits.h usability... yes
checking limits.h presence... yes
checking for limits.h... yes
checking netdb.h usability... no
checking netdb.h presence... no
checking for netdb.h... no
checking netinet/in.h usability... no
checking netinet/in.h presence... no
checking for netinet/in.h... no
checking stddef.h usability... yes
checking stddef.h presence... yes
checking for stddef.h... yes
checking sys/ioctl.h usability... no
checking sys/ioctl.h presence... no
checking for sys/ioctl.h... no
checking sys/socket.h usability... no
checking sys/socket.h presence... no
checking for sys/socket.h... no
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking errno.h usability... yes
checking errno.h presence... yes
checking for errno.h... yes
checking for socket in -lnetwork... no
checking whether byte ordering is bigendian... no
checking for size_t... yes
checking for uint8_t... yes
checking dependency style of x86_64-w64-mingw32-gcc... gcc3
checking for cos in -lm... yes
checking for thread local storage (TLS) class... __thread
checking for debug... no
checking whether x86_64-w64-mingw32-gcc is Clang... no
checking whether pthreads work with -pthread... yes
checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE
checking whether more special flags are required for pthreads... no
checking for PTHREAD_PRIO_INHERIT... yes
checking for fast RSA... no
checking for library containing gethostbyname... no
checking for library containing socket... no
checking for socket in -lsocket... no
checking for vcs system... git
checking for vcs checkout... yes
checking whether the linker accepts -Werror... yes
checking whether the linker accepts -z relro -z now... no
checking whether the linker accepts -pie... yes
checking whether C compiler accepts -Werror... yes
checking whether C compiler accepts -Wno-pragmas... yes
checking whether C compiler accepts -Wall... yes
checking whether C compiler accepts -Wno-strict-aliasing... yes
checking whether C compiler accepts -Wextra... yes
checking whether C compiler accepts -Wunknown-pragmas... yes
checking whether C compiler accepts -Wthis-test-should-fail... no
checking whether C compiler accepts --param=ssp-buffer-size=1... yes
checking whether C compiler accepts -Waddress... yes
checking whether C compiler accepts -Warray-bounds... yes
checking whether C compiler accepts -Wbad-function-cast... yes
checking whether C compiler accepts -Wchar-subscripts... yes
checking whether C compiler accepts -Wcomment... yes
checking whether C compiler accepts -Wfloat-equal... yes
checking whether C compiler accepts -Wformat-security... yes
checking whether C compiler accepts -Wformat=2... yes
checking whether C compiler accepts -Wmaybe-uninitialized... yes
checking whether C compiler accepts -Wmissing-field-initializers... yes
checking whether C compiler accepts -Wmissing-noreturn... yes
checking whether C compiler accepts -Wmissing-prototypes... yes
checking whether C compiler accepts -Wnested-externs... yes
checking whether C compiler accepts -Wnormalized=id... yes
checking whether C compiler accepts -Woverride-init... yes
checking whether C compiler accepts -Wpointer-arith... yes
checking whether C compiler accepts -Wpointer-sign... yes
checking whether C compiler accepts -Wredundant-decls... yes
checking whether C compiler accepts -Wshadow... yes
checking whether C compiler accepts -Wshorten-64-to-32... no
checking whether C compiler accepts -Wsign-compare... yes
checking whether C compiler accepts -Wstrict-overflow=1... yes
checking whether C compiler accepts -Wstrict-prototypes... no
checking whether C compiler accepts -Wswitch-enum... yes
checking whether C compiler accepts -Wundef... yes
checking whether C compiler accepts -Wunused... yes
checking whether C compiler accepts -Wunused-result... yes
checking whether C compiler accepts -Wunused-variable... yes
checking whether C compiler accepts -Wwrite-strings... yes
checking whether C compiler accepts -fwrapv... yes
creating wolfssl-config - generic 4.5.0 for -lwolfssl
checking the number of available CPUs... 8
configure: adding automake macro support
configure: creating aminclude.am
configure: added jobserver support to make for 9 jobs
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating stamp-h
config.status: creating Makefile
config.status: creating wolfssl/version.h
config.status: creating wolfssl/options.h
config.status: creating cyassl/options.h
config.status: creating support/wolfssl.pc
config.status: creating rpm/spec
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
---
Running make clean...
---
Generating user options header...
option w/o begin -D is -Werror, not saving to wolfssl/options.h
option w/o begin -D is -Wno-pragmas, not saving to wolfssl/options.h
option w/o begin -D is -Wall, not saving to wolfssl/options.h
option w/o begin -D is -Wno-strict-aliasing, not saving to wolfssl/options.h
option w/o begin -D is -Wextra, not saving to wolfssl/options.h
option w/o begin -D is -Wunknown-pragmas, not saving to wolfssl/options.h
option w/o begin -D is --param=ssp-buffer-size=1, not saving to wolfssl/options.h
option w/o begin -D is -Waddress, not saving to wolfssl/options.h
option w/o begin -D is -Warray-bounds, not saving to wolfssl/options.h
option w/o begin -D is -Wbad-function-cast, not saving to wolfssl/options.h
option w/o begin -D is -Wchar-subscripts, not saving to wolfssl/options.h
option w/o begin -D is -Wcomment, not saving to wolfssl/options.h
option w/o begin -D is -Wfloat-equal, not saving to wolfssl/options.h
option w/o begin -D is -Wformat-security, not saving to wolfssl/options.h
option w/o begin -D is -Wformat=2, not saving to wolfssl/options.h
option w/o begin -D is -Wmaybe-uninitialized, not saving to wolfssl/options.h
option w/o begin -D is -Wmissing-field-initializers, not saving to wolfssl/options.h
option w/o begin -D is -Wmissing-noreturn, not saving to wolfssl/options.h
option w/o begin -D is -Wmissing-prototypes, not saving to wolfssl/options.h
option w/o begin -D is -Wnested-externs, not saving to wolfssl/options.h
option w/o begin -D is -Wnormalized=id, not saving to wolfssl/options.h
option w/o begin -D is -Woverride-init, not saving to wolfssl/options.h
option w/o begin -D is -Wpointer-arith, not saving to wolfssl/options.h
option w/o begin -D is -Wpointer-sign, not saving to wolfssl/options.h
option w/o begin -D is -Wredundant-decls, not saving to wolfssl/options.h
option w/o begin -D is -Wshadow, not saving to wolfssl/options.h
option w/o begin -D is -Wsign-compare, not saving to wolfssl/options.h
option w/o begin -D is -Wstrict-overflow=1, not saving to wolfssl/options.h
option w/o begin -D is -Wswitch-enum, not saving to wolfssl/options.h
option w/o begin -D is -Wundef, not saving to wolfssl/options.h
option w/o begin -D is -Wunused, not saving to wolfssl/options.h
option w/o begin -D is -Wunused-result, not saving to wolfssl/options.h
option w/o begin -D is -Wunused-variable, not saving to wolfssl/options.h
option w/o begin -D is -Wwrite-strings, not saving to wolfssl/options.h
option w/o begin -D is -fwrapv, not saving to wolfssl/options.h
option w/o begin -D is -fvisibility=hidden, not saving to wolfssl/options.h
not outputting (N)DEBUG to wolfssl/options.h
option w/o begin -D is -pthread, not saving to wolfssl/options.h
option w/o begin -D is -Wall, not saving to wolfssl/options.h
option w/o begin -D is -Wno-unused, not saving to wolfssl/options.h
option w/o begin -D is -O2, not saving to wolfssl/options.h


---
Configuration summary for wolfssl version 4.5.0

   * Installation prefix:        /usr/local
   * System type:                w64-mingw32
   * Host CPU:                   x86_64
   * C Compiler:                 x86_64-w64-mingw32-gcc
   * C Flags:                       -Werror -Wno-pragmas -Wall -Wno-strict-aliasing -Wextra -Wunknown-pragmas --param=ssp-buffer-size=1 -Waddress -Warray-bounds -Wbad-function-cast -Wchar-subscripts -Wcomment -Wfloat-equal -Wformat-security -Wformat=2 -Wmaybe-uninitialized -Wmissing-field-initializers -Wmissing-noreturn -Wmissing-prototypes -Wnested-externs -Wnormalized=id -Woverride-init -Wpointer-arith -Wpointer-sign -Wredundant-decls -Wshadow -Wsign-compare -Wstrict-overflow=1 -Wswitch-enum -Wundef -Wunused -Wunused-result -Wunused-variable -Wwrite-strings -fwrapv
   * C++ Compiler:
   * C++ Flags:
   * CPP Flags:
   * CCAS Flags:
   * LIB Flags:                   -pie -Werror
   * Debug enabled:              no
   * Coverage enabled:
   * Warnings as failure:        yes
   * make -j:                    9
   * VCS checkout:               yes

   Features
   * Single threaded:            no
   * Filesystem:                 yes
   * OpenSSH Build:              no
   * OpenSSL Extra API:          no
   * OpenSSL Coexist:            no
   * Old Names:                  yes
   * Max Strength Build:         no
   * Distro Build:               no
   * fastmath:                   yes
   * Assembly Allowed:           yes
   * sniffer:                    no
   * snifftest:                  no
   * ARC4:                       no
   * AES:                        yes
   * AES-NI:                     no
   * AES-CBC:                    yes
   * AES-GCM:                    yes
   * AES-CCM:                    no
   * AES-CTR:                    no
   * DES3:                       no
   * IDEA:                       no
   * Camellia:                   no
   * NULL Cipher:                no
   * MD5:                        yes
   * RIPEMD:                     no
   * SHA:                        yes
   * SHA-224:                    yes
   * SHA-384:                    yes
   * SHA-512:                    yes
   * SHA3:                       yes
   * SHAKE256:                   yes
   * BLAKE2:                     no
   * CMAC:                       no
   * keygen:                     no
   * certgen:                    no
   * certreq:                    no
   * certext:                    no
   * certgencache:               no
   * HC-128:                     no
   * RABBIT:                     no
   * CHACHA:                     yes
   * Hash DRBG:                  yes
   * PWDBASED:                   no
   * scrypt:                     no
   * wolfCrypt Only:             no
   * HKDF:                       yes
   * X9.63 KDF:                  no
   * MD4:                        no
   * PSK:                        no
   * Poly1305:                   yes
   * LEANPSK:                    no
   * LEANTLS:                    no
   * RSA:                        yes
   * RSA-PSS:                    yes
   * DSA:                        no
   * DH:                         yes
   * DH Default Parameters:      yes
   * ECC:                        yes
   * ECC Custom Curves           no
   * CURVE25519:                 no
   * ED25519:                    no
   * CURVE448:                   no
   * ED448:                      no
   * FPECC:                      no
   * ECC_ENCRYPT:                no
   * ASN:                        yes
   * Anonymous cipher:           no
   * CODING:                     yes
   * MEMORY:                     yes
   * I/O POOL:                   no
   * LIGHTY:                     no
   * HAPROXY:                    no
   * STUNNEL:                    no
   * Apache httpd:               no
   * NGINX:                      no
   * ASIO:                       no
   * LIBWEBSOCKETS:              no
   * Qt                          no
   * Qt Unit Testing             no
   * SIGNAL:                     no
   * ERROR_STRINGS:              yes
   * DTLS:                       no
   * SCTP:                       no
   * Indefinite Length:          no
   * Multicast:                  no
   * SSL v3.0 (Old):             no
   * TLS v1.0 (Old):             no
   * TLS v1.1 (Old):             yes
   * TLS v1.2:                   yes
   * TLS v1.3:                   yes
   * Post-handshake Auth:        no
   * Early Data:                 no
   * Send State in HRR Cookie:   no
   * OCSP:                       no
   * OCSP Stapling:              no
   * OCSP Stapling v2:           no
   * CRL:                        no
   * CRL-MONITOR:                no
   * Persistent session cache:   no
   * Persistent cert    cache:   no
   * Atomic User Record Layer:   no
   * Public Key Callbacks:       no
   * NTRU:                       no
   * QSH:                        no
   * Whitewood netRandom:        no
   * Server Name Indication:     no
   * ALPN:                       no
   * Maximum Fragment Length:    no
   * Trusted CA Indication:      no
   * Truncated HMAC:             no
   * Supported Elliptic Curves:  yes
   * FFDHE only in client:       no
   * Session Ticket:             no
   * Extended Master Secret:     yes
   * Renegotiation Indication:   no
   * Secure Renegotiation:       no
   * Fallback SCSV:              no
   * All TLS Extensions:         no
   * PKCS#7                      no
   * wolfSSH                     no
   * wolfSCEP                    no
   * Secure Remote Password      no
   * Small Stack:                no
   * valgrind unit tests:        no
   * LIBZ:                       no
   * Examples:                   yes
   * User Crypto:                no
   * Fast RSA:                   no
   * Single Precision:           no
   * Async Crypto:               no
   * PKCS#11:                    no
   * PKCS#12:                    yes
   * Cavium Nitox:               no
   * Cavium Octeon (Sync):       no
   * Intel Quick Assist:         no
   * ARM ASM:                    no
   * AES Key Wrap:               no
   * Write duplicate:            no
   * Xilinx Hardware Acc.:       no
   * Inline Code:                yes
   * Linux AF_ALG:               no
   * Linux devcrypto:            no
   * Crypto callbacks:           no

---
configure: WARNING: Building with shared and static library at the same time on this system may cause export/import problems when using non contemporary GNU tools.

fulguritude@MSI ~/wolfssl_pr
$ make
make -j9  all-am
make[1]: Entering directory '/home/fulguritude/wolfssl_pr'
  CC       wolfcrypt/test/testsuite_testsuite_test-test.o
  CC       examples/client/testsuite_testsuite_test-client.o
  CC       examples/echoclient/testsuite_testsuite_test-echoclient.o
  CC       examples/echoserver/testsuite_testsuite_test-echoserver.o
  CC       examples/server/testsuite_testsuite_test-server.o
  CC       examples/client/tests_unit_test-client.o
  CC       examples/server/tests_unit_test-server.o
  CC       wolfcrypt/benchmark/benchmark.o
  CC       wolfcrypt/src/src_libwolfssl_la-hmac.lo
  CC       wolfcrypt/src/src_libwolfssl_la-hash.lo
  CC       wolfcrypt/src/src_libwolfssl_la-cpuid.lo
  CC       wolfcrypt/src/src_libwolfssl_la-random.lo
  CC       wolfcrypt/src/src_libwolfssl_la-rsa.lo
  CC       wolfcrypt/src/src_libwolfssl_la-aes.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha256.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha512.lo
  CC       wolfcrypt/src/src_libwolfssl_la-sha3.lo
  CC       wolfcrypt/src/src_libwolfssl_la-logging.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_port.lo
  CC       wolfcrypt/src/src_libwolfssl_la-error.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wc_encrypt.lo
  CC       wolfcrypt/src/src_libwolfssl_la-signature.lo
  CC       wolfcrypt/src/src_libwolfssl_la-wolfmath.lo
  CC       wolfcrypt/src/src_libwolfssl_la-memory.lo
  CC       wolfcrypt/src/src_libwolfssl_la-dh.lo
  CC       wolfcrypt/src/src_libwolfssl_la-asn.lo
  CC       wolfcrypt/src/src_libwolfssl_la-coding.lo
  CC       wolfcrypt/src/src_libwolfssl_la-poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-md5.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha.lo
  CC       wolfcrypt/src/src_libwolfssl_la-chacha20_poly1305.lo
  CC       wolfcrypt/src/src_libwolfssl_la-tfm.lo
  CC       wolfcrypt/src/src_libwolfssl_la-ecc.lo
wolfcrypt/src/tfm.c:62: error: ignoring #pragma warning  [-Werror=unknown-pragmas]
   62 |     #pragma warning(disable:4127)
      |
wolfcrypt/src/tfm.c: In function ‘fp_set_int’:
wolfcrypt/src/tfm.c:3710:9: error: comparison is always true due to limited range of data type [-Werror=type-limits]
 3710 |   if (b < FP_DIGIT_MAX) {
      |         ^
  CC       src/libwolfssl_la-internal.lo
  CC       src/libwolfssl_la-wolfio.lo
  CC       src/libwolfssl_la-keys.lo
  CC       src/libwolfssl_la-ssl.lo
  CC       src/libwolfssl_la-tls.lo
  CC       src/libwolfssl_la-tls13.lo
cc1: all warnings being treated as errors
make[1]: *** [Makefile:4936: wolfcrypt/src/src_libwolfssl_la-tfm.lo] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/home/fulguritude/wolfssl_pr'
make: *** [Makefile:3292: all] Error 2

Also:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-cygwin/10/lto-wrapper.exe
Target: x86_64-pc-cygwin
Configured with: /mnt/share/cygpkgs/gcc/gcc.x86_64/src/gcc-10.2.0/configure --srcdir=/mnt/share/cygpkgs/gcc/gcc.x86_64/src/gcc-10.2.0 --prefix=/usr --exec-prefix=/usr --localstatedir=/var --sysconfdir=/etc --docdir=/usr/share/doc/gcc --htmldir=/usr/share/doc/gcc/html -C --build=x86_64-pc-cygwin --host=x86_64-pc-cygwin --target=x86_64-pc-cygwin --without-libiconv-prefix --without-libintl-prefix --libexecdir=/usr/lib --with-gcc-major-version-only --enable-shared --enable-shared-libgcc --enable-static --enable-version-specific-runtime-libs --enable-bootstrap --enable-__cxa_atexit --with-dwarf2 --with-tune=generic --enable-languages=c,c++,fortran,lto,objc,obj-c++ --enable-graphite --enable-threads=posix --enable-libatomic --enable-libgomp --enable-libquadmath --enable-libquadmath-support --disable-libssp --enable-libada --disable-symvers --with-gnu-ld --with-gnu-as --with-cloog-include=/usr/include/cloog-isl --without-libiconv-prefix --without-libintl-prefix --with-system-zlib --enable-linker-build-id --with-default-libstdcxx-abi=gcc4-compatible --enable-libstdcxx-filesystem-ts
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.2.0 (GCC)

Finally, cygwin mintty v 3.4.1.0

[elms]

@Fulguritude Can you confirm you checked out the PR? What SHA is the tree at(git describe)?

As a side note, using --host is recommended as it can set other related flags (eg link ws2_32) where as setting CC just replaces the compiler, but it should still work with appropriate additional flags.

[Fulguritude]

You're right, my bad; I think I must have written dashes instead of underscores when checking out msys_build_fix and not read the error. I can confirm that both builds work for cc4116de24248376f2cd932a103099a9a83a1043. Thanks a lot !

[embhorn]

I was able to reproduce the original issue, but using #3960 from @elms , ./configure --enable-static --host=x86_64-w64-mingw32 builds clean for me also.