mingw32, ffmpeg and others: libraries missing for mingw32 only

[LigH-de]

Tail of ffmpeg-git/build-static-32bit/ffbuild/config.log

pkgconf --exists --print-errors librist >= 0.2.7
Package libcjson was not found in the pkg-config search path.
Perhaps you should add the directory containing `libcjson.pc'
to the PKG_CONFIG_PATH environment variable
Package 'libcjson', required by 'librist', not found
ERROR: librist >= 0.2.7 not found using pkg-config

libcjson exists in msys64/mingw64/lib but not in msys64/mingw32/lib

[1480c1]

libcjson was removed for mingw32, so that would at least explain that. I'm going to need to make a list of deps that are required for 32-bit but were removed soon.

[LigH-de]

Another case: bmx

checking for uriParseUriA in -luriparser... no
configure: error: liburiparser not found

[Biswa96]

Could you provide any reason for compiling 32 bit binaries?

[LigH-de]

In my case, just curiosity and testing. I just try now and then if it still works and tell you if not; the maintainers decide whether to try to find a solution or take it as a more serious reason to abandon the support.

[LigH-de]

Building 32-bit ffmpeg with librist can be repaired by reenabling the use of the internal cJSON, see #2476 (comment)
(Building 64-bit librist fails for another reason: undefined reference to `BCryptGenRandom')

_check=(librist.{a,pc} librist/librist.h)
[[ $standalone = y ]] && _check+=(bin-global/rist{sender,receiver,2rist,srppasswd}.exe)
if enabled librist && do_vcs "$SOURCE_REPO_LIBRIST"; then
-    do_pacman_install cjson
    do_uninstall include/librist "${_check[@]}"
-    extracommands=("-Dbuiltin_cjson=false")
+    extracommands=("-Dbuiltin_cjson=true")
    [[ $standalone = y ]] || extracommands+=("-Dbuilt_tools=false")
    do_mesoninstall global -Dhave_mingw_pthreads=true -Dtest=false "${extracommands[@]}"
    do_checkIfExist
fi

Regarding bmx, may it be suitable to build https://github.com/uriparser/uriparser from sources?

[LigH-de]

Created VideoLAN/librist issue 175

[Biswa96]

The linker error does not seem related with librist. mbedcrypto should mention the bcrypt dependency somewhere.

[LigH-de]

Then maybe it's another issue of MSYS2 pkgconfig enumerating dependencies?

[Biswa96]

mbedtls does not have pkgconfig file. The bcrypt dependency is mentioned in MbedTLSTargets.cmake file. You have to manually add bcrypt dependency in librist for static linking. Though I am not sure if upstream librist would add it or not.

[Biswa96]

Upstream mbedtls has a new pull request to add pkgconfig file. We could wait for that one.

[LigH-de]

I guess this should have happened in Mbed-TLS/mbedtls@0315123 so MSYS2 needs to deploy new packages? In my suite, no *mbed*.pc exists yet, anywhere.

[Biswa96]

Thanks for the reminder. The pkgconfig file is not complete yet. The version and lib.private field are empty and we need the later one for bcrypt. I shall try to figure something out.

[LigH-de]

@Biswa96 - read your commit comment but it seems not to be available yet, compilation still misses BCryptGenRandom in MinGW64. Will try again now and then ...

[Biswa96]

I have tired with a sample tool in librist using cc test.c $(pkgconf -libs -static librist) command and not with m-ab-s.

[LigH-de]

Still no news...

build/librist-git/build-64bit/ab-suite.build.log

[Biswa96]

The linking command does not have -lbcrypt. I am not familiar with this project and can not provide any suggestion.

Though, the output is correct from pkgconf.

$ pkgconf -libs -static mbedcrypto
-lmbedcrypto -lbcrypt

$ pkgconf -libs -static librist
-lrist -lws2_32 -liphlpapi -pthread -lmbedcrypto -lbcrypt -lcjson -lm