fails to build under gcc10 version 10-20200405 but successfully builds with gcc9.3.0

[hydra3333]

Hello.

As of yestersday, I tried to cross-compile curl library under ubuntu 18.04.3 mingw64 for win10x64 for use with cross-compiling mediainfo.

The last commit (release) that built successfully under gcc10 version 10-20200405 was :
commit works: '2cfac302fbeec68f1727cba3d1705e16f02220ad'

This subsequent commit (release) fails to build under gcc10 gcc10 version 10-20200405 but successfully builds with gcc9.3.0
commit fails: 'b8d1366852fd0034374c5de1e4968c7a224f77cc'

Cheers

[jay]

What was the error? Can you bisect it?

[hydra3333]

ok, it'll take me a few hours to resurrect the deleted vm and try

[jay]

If it's going to take a lot of your time don't worry about it we can just wait until someone else reports it and has that data.

[hydra3333]

i'm retired and in lockdown, i've time ;)

[hydra3333]

OK, when it fails with gcc10 version 10-20200405 at latest commit (but works with gcc 9.3.0), this is what I see:

make[2]: Entering directory '/home/u/Desktop/_working/workdir/x86_64/curl_git/src'
  CC       curl-slist_wc.o
  CC       curl-tool_binmode.o
  CC       curl-tool_bname.o
  CC       curl-tool_cb_dbg.o
  CC       curl-tool_cb_hdr.o
  CC       curl-tool_cb_prg.o
  CC       curl-tool_cb_rea.o
  CC       curl-tool_cb_see.o
  CC       curl-tool_cb_wrt.o
  CC       curl-tool_cfgable.o
  CC       curl-tool_convert.o
  CC       curl-tool_dirhie.o
  CC       curl-tool_doswin.o
  CC       curl-tool_easysrc.o
  CC       curl-tool_filetime.o
  CC       curl-tool_formparse.o
  CC       curl-tool_getparam.o
  CC       curl-tool_getpass.o
  CC       curl-tool_help.o
  CC       curl-tool_helpers.o
  CC       curl-tool_homedir.o
  HUGE     tool_hugehelp.c
  CC       curl-tool_libinfo.o
  CC       curl-tool_main.o
  CC       curl-tool_metalink.o
  CC       curl-tool_msgs.o
  CC       curl-tool_operate.o
  CC       curl-tool_operhlp.o
  CC       curl-tool_panykey.o
  CC       curl-tool_paramhlp.o
  CC       curl-tool_parsecfg.o
  CC       curl-tool_progress.o
  CC       curl-tool_strdup.o
  CC       curl-tool_setopt.o
  CC       curl-tool_sleep.o
  CC       curl-tool_urlglob.o
  CC       curl-tool_util.o
  CC       curl-tool_vms.o
  CC       curl-tool_writeout.o
  CC       curl-tool_writeout_json.o
  CC       curl-tool_xattr.o
  CC       curl-tool_hugehelp.o
  CC       ../lib/curl-strtoofft.o
  CC       ../lib/curl-nonblock.o
  CC       ../lib/curl-warnless.o
  CC       ../lib/curl-curl_ctype.o
  CCLD     curl.exe
/home/u/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/lib/gcc/x86_64-w64-mingw32/10.0.1/../../../../x86_64-w64-mingw32/bin/ld: ../lib/.libs/libcurl.a(libcurl_la-system_win32.o):system_win32.c:(.bss+0x10): multiple definition of `Curl_freq'; curl-tool_doswin.o:tool_doswin.c:(.bss+0x8): first defined here
/home/u/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/lib/gcc/x86_64-w64-mingw32/10.0.1/../../../../x86_64-w64-mingw32/bin/ld: ../lib/.libs/libcurl.a(libcurl_la-system_win32.o):system_win32.c:(.bss+0x8): multiple definition of `Curl_isVistaOrGreater'; curl-tool_doswin.o:tool_doswin.c:(.bss+0x0): first defined here
collect2: error: ld returned 1 exit status
Makefile:879: recipe for target 'curl.exe' failed
make[2]: *** [curl.exe] Error 1
make[2]: Leaving directory '/home/u/Desktop/_working/workdir/x86_64/curl_git/src'
Makefile:1964: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/u/Desktop/_working/workdir/x86_64/curl_git/src'
Makefile:983: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1

for configure:

{
	'repo_type' : 'git',
	'url' : 'https://github.com/curl/curl',
	'depth_git' : 0,
	#'branch' : '2cfac302fbeec68f1727cba3d1705e16f02220ad', # works: '2cfac302fbeec68f1727cba3d1705e16f02220ad', # fails: 'b8d1366852fd0034374c5de1e4968c7a224f77cc' under gcc10,
	'rename_folder' : 'curl_git',
	'configure_options': '--enable-static --disable-shared --target={bit_name2}-{bit_name_win}-gcc --host={target_host} --build=x86_64-linux-gnu --with-libssh2 --with-gnutls --with-ca-fallback --without-winssl --prefix={target_prefix} --exec-prefix={target_prefix}', # 2019.12.13
	'depends_on': (
		'zlib', 'gnutls', 'libssh2',
	),
	'_info' : { 'version' : 'git (master)', 'fancy_name' : 'libcurl' },
}

Now, onto bisecting.

[hydra3333]

Oh, with commit 2cfac302fbeec68f1727cba3d1705e16f02220ad this is what I see

 CC       curl-tool_util.o
  CC       curl-tool_vms.o
  CC       curl-tool_writeout.o
  CC       curl-tool_xattr.o
  CC       curl-tool_hugehelp.o
  CC       ../lib/curl-strtoofft.o
  CC       ../lib/curl-nonblock.o
  CC       ../lib/curl-warnless.o
  CC       ../lib/curl-curl_ctype.o
  CC       ../lib/curl-curl_ctype.o
  CCLD     curl.exe
make[2]: Leaving directory '/home/u/Desktop/_working/workdir/x86_64/curl_git/src'
make[1]: Leaving directory '/home/u/Desktop/_working/workdir/x86_64/curl_git/src'
make[1]: Entering directory '/home/u/Desktop/_working/workdir/x86_64/curl_git'
make[1]: Nothing to be done for 'all-am'.
make[1]: Leaving directory '/home/u/Desktop/_working/workdir/x86_64/curl_git'

[hydra3333]

OK...

Commit 1fc0617 tool_util: Improve Windows version of tvnow() Feb 19, 2020 fails to build under gcc10 version 10-20200405

The prior commit 3735107d62ad28d6e25bd94109ab9f2454c22116 builds OK under gcc10 version 10-20200405

[jay]

Ok. Are you able to build this:

cat << EOF > shared2.h
extern unsigned int foo(unsigned int a);
EOF

cat << EOF > shared2.c
#include "shared2.h"
unsigned int foo(unsigned int a) { return a + 5; }
EOF

cat << EOF > shared.h
extern unsigned int bar(unsigned int a);
EOF

cat << EOF > shared.c
#include "shared.h"
#include "shared2.h"
unsigned int bar(unsigned int a) { return foo(a); }
EOF

cat << EOF > program.c
#include <stdio.h>
#include "shared.h"
unsigned int foo(unsigned int a) { return a + 99; }
int main(void)
{
  int result = foo(1);
  printf("%d\n", result);
  result = bar(1);
  printf("%d\n", result);
  return 0;
}
EOF

x86_64-w64-mingw32-gcc -c -o shared.o shared.c
x86_64-w64-mingw32-gcc -c -o shared2.o shared2.c
x86_64-w64-mingw32-ar rcs libshared.a shared.o shared2.o
x86_64-w64-mingw32-gcc -Wall  -L. program.c -o program.exe -lshared
./program.exe

The output should be:

100
100

[hydra3333]

OK will do.
It's cross-compiling, so program.exe runs on win10 of course.

[hydra3333]

OK,

~/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/bin/x86_64-w64-mingw32-gcc -c -o shared.o shared.c
~/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/bin/x86_64-w64-mingw32-gcc -c -o shared2.o shared2.c
~/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/bin/x86_64-w64-mingw32-ar rcs libshared.a shared.o shared2.o
~/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/bin/x86_64-w64-mingw32-gcc -Wall  -L. program.c -o program.exe -lshared

D:\VM>program.exe
100
100
D:\VM>

[hydra3333]

uncut console log, probably of less than zero use to you.

./cross_compiler_v100_001.py --force --debug -d test_only
[17:54:12][INFO] Loaded 173 packages
[17:54:12][DEBUG] Debugging is on
[17:54:12][INFO] Starting custom build process for: test_only
[17:54:12][INFO] Starting build script
Changing dir from /home/u/Desktop/_working to /home/u/Desktop/_working/workdir
[17:54:12][DEBUG] cd /home/u/Desktop/_working/workdir
[17:54:12][INFO] MinGW-w64 install is working! (target mingw64)
[17:54:12][INFO] Building dependency 'test_only'
[17:54:12][DEBUG] Reset CFLAGS/CXXFLAGS/CPPFLAGS/LDFLAGS to: '  -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  '
##############################
### Environment variables:  ###
	CLUTTER_IM_MODULE : xim
	LC_ALL : en_AU.UTF-8
	LS_COLORS : rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.zst=01;31:*.tzst=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.wim=01;31:*.swm=01;31:*.dwm=01;31:*.esd=01;31:*.jpg=01;35:*.jpeg=01;35:*.mjpg=01;35:*.mjpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:
	LESSCLOSE : /bin/lesspipe %s %s
	XDG_MENU_PREFIX : gnome-
	LANG : en_AU.UTF-8
	DISPLAY : :10.0
	GNOME_SHELL_SESSION_MODE : ubuntu
	COLORTERM : truecolor
	SSH_AUTH_SOCK : /home/u/.cache/keyring-9WC1I0/ssh
	XRDP_SOCKET_PATH : /var/run/xrdp/sockdir
	USER : u
	QT4_IM_MODULE : xim
	TEXTDOMAINDIR : /usr/share/locale/
	GNOME_TERMINAL_SCREEN : /org/gnome/Terminal/screen/ae04484d_5c03_4ec1_bba7_84e19133cac9
	PULSE_SCRIPT : /etc/xrdp/pulse/default.pa
	PWD : /home/u/Desktop/_working
	HOME : /home/u
	UID : 1000
	TEXTDOMAIN : im-config
	SSH_AGENT_PID : 1039
	QT_ACCESSIBILITY : 1
	XDG_DATA_DIRS : /usr/share/gnome:/usr/local/share:/usr/share:/var/lib/snapd/desktop
	GJS_DEBUG_OUTPUT : stderr
	GTK_MODULES : gail:atk-bridge
	TERM : xterm-256color
	SHELL : /bin/bash
	VTE_VERSION : 5202
	GNOME_KEYRING_CONTROL : /home/u/.cache/keyring-9WC1I0
	QT_IM_MODULE : xim
	XMODIFIERS : @im=ibus
	IM_CONFIG_PHASE : 2
	XDG_CURRENT_DESKTOP : ubuntu:GNOME
	GPG_AGENT_INFO : /run/user/1000/gnupg/S.gpg-agent:0:1
	GNOME_TERMINAL_SERVICE : :1.70
	SHLVL : 1
	LANGUAGE : en_AU:en
	GNOME_DESKTOP_SESSION_ID : this-is-deprecated
	LOGNAME : u
	DBUS_SESSION_BUS_ADDRESS : unix:abstract=/tmp/dbus-Emd8vnA35S,guid=6108405751ecfe07bd1870b25e92c353
	PATH : /home/u/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/bin:/sbin:/bin:/usr/bin:/usr/local/bin:/snap/bin
	GJS_DEBUG_TOPICS : JS ERROR;JS LOG
	SESSION_MANAGER : local/u18:@/tmp/.ICE-unix/949,unix/u18:/tmp/.ICE-unix/949
	XRDP_SESSION : 1
	LESSOPEN : | /bin/lesspipe %s
	GTK_IM_MODULE : ibus
	OLDPWD : /home/u/Desktop
	_ : ./cross_compiler_v100_001.py
	PKG_CONFIG_PATH : /home/u/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/x86_64-w64-mingw32/lib/pkgconfig
	PKG_CONFIG_LIBDIR : 
	COLOR : ON
	CLICOLOR_FORCE : ON
	CFLAGS :   -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  
	CXXFLAGS :   -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  
	CPPFLAGS :   -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  
	LDFLAGS :   -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  
##############################
##############################
Changing dir from /home/u/Desktop/_working/workdir to /home/u/Desktop/_working/workdir/x86_64
[17:54:12][DEBUG] cd /home/u/Desktop/_working/workdir/x86_64
Changing dir from /home/u/Desktop/_working/workdir/x86_64 to TEST_ONLY_git
[17:54:12][DEBUG] cd TEST_ONLY_git
[17:54:12][DEBUG] git remote update
[17:54:12][DEBUG] Running 'git remote update' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
Fetching origin
[17:54:13][DEBUG] git checkout -f
[17:54:13][DEBUG] Running 'git checkout -f' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
Your branch is up to date with 'origin/master'.
[17:54:13][DEBUG] git checkout master
[17:54:13][DEBUG] Running 'git checkout master' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
Already on 'master'
Your branch is up to date with 'origin/master'.
[17:54:13][DEBUG] ####################
[17:54:13][DEBUG] Up to date
[17:54:13][DEBUG] LOCAL:  3f7f200e6c8c164b7e2df0fde9b76c7fff726818

[17:54:13][DEBUG] REMOTE: 3f7f200e6c8c164b7e2df0fde9b76c7fff726818

[17:54:13][DEBUG] BASE:   3f7f200e6c8c164b7e2df0fde9b76c7fff726818

[17:54:13][DEBUG] ####################
Changing dir from /home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git to ..
[17:54:13][DEBUG] cd ..
Changing dir from /home/u/Desktop/_working/workdir/x86_64 to TEST_ONLY_git
[17:54:13][DEBUG] cd TEST_ONLY_git
[17:54:13][DEBUG] git clean -ffdx
[17:54:13][DEBUG] Running 'git clean -ffdx' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
Removing libshared.a
Removing program.exe
Removing shared.o
Removing shared2.o
[17:54:13][DEBUG] git submodule foreach --recursive git clean -ffdx
[17:54:13][DEBUG] Running 'git submodule foreach --recursive git clean -ffdx' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][DEBUG] git reset --hard
[17:54:13][DEBUG] Running 'git reset --hard' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
HEAD is now at 3f7f200 program.c
[17:54:13][DEBUG] git submodule foreach --recursive git reset --hard
[17:54:13][DEBUG] Running 'git submodule foreach --recursive git reset --hard' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][DEBUG] git submodule update --init --recursive
[17:54:13][DEBUG] Running 'git submodule update --init --recursive' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'echo "#x86_64-win64-gcc"'
[17:54:13][DEBUG] Running 'echo "#x86_64-win64-gcc"' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
#x86_64-win64-gcc
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'echo "#x86_64-w64-mingw32-"'
[17:54:13][DEBUG] Running 'echo "#x86_64-w64-mingw32-"' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
#x86_64-w64-mingw32-
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'echo "#x86_64-w64-mingw32-gcc"'
[17:54:13][DEBUG] Running 'echo "#x86_64-w64-mingw32-gcc"' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
#x86_64-w64-mingw32-gcc
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'echo "#x86_64-w64-mingw32-ar"'
[17:54:13][DEBUG] Running 'echo "#x86_64-w64-mingw32-ar"' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
#x86_64-w64-mingw32-ar
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'rm -vf shared.o'
[17:54:13][DEBUG] Running 'rm -vf shared.o' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'rm -vf shared2.o'
[17:54:13][DEBUG] Running 'rm -vf shared2.o' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'rm -vf libshared.a'
[17:54:13][DEBUG] Running 'rm -vf libshared.a' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'rm -vf program.exe'
[17:54:13][DEBUG] Running 'rm -vf program.exe' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'x86_64-w64-mingw32-gcc -c -o shared.o shared.c'
[17:54:13][DEBUG] Running 'x86_64-w64-mingw32-gcc -c -o shared.o shared.c' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'x86_64-w64-mingw32-gcc -c -o shared2.o shared2.c'
[17:54:13][DEBUG] Running 'x86_64-w64-mingw32-gcc -c -o shared2.o shared2.c' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'x86_64-w64-mingw32-ar rcs libshared.a shared.o shared2.o'
[17:54:13][DEBUG] Running 'x86_64-w64-mingw32-ar rcs libshared.a shared.o shared2.o' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'x86_64-w64-mingw32-gcc -Wall  -L. program.c -o program.exe -lshared'
[17:54:13][DEBUG] Running 'x86_64-w64-mingw32-gcc -Wall  -L. program.c -o program.exe -lshared' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
[17:54:13][INFO] Runningrun_post_regexreplace-command: 'ls -al'
[17:54:13][DEBUG] Running 'ls -al' in '/home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git'
total 96
drwxrwxr-x 3 u u  4096 Apr 12 17:54 .
drwxrwxrwx 4 u u  4096 Apr 12 17:41 ..
drwxrwxr-x 8 u u  4096 Apr 12 17:54 .git
-rw-rw-r-- 1 u u  1632 Apr 12 17:54 libshared.a
-rw-rw-r-- 1 u u   216 Apr 12 17:41 program.c
-rwxrwxr-x 1 u u 52161 Apr 12 17:54 program.exe
-rw-rw-r-- 1 u u    72 Apr 12 17:41 shared2.c
-rw-rw-r-- 1 u u    41 Apr 12 17:41 shared2.h
-rw-rw-r-- 1 u u   688 Apr 12 17:54 shared2.o
-rw-rw-r-- 1 u u    93 Apr 12 17:41 shared.c
-rw-rw-r-- 1 u u    41 Apr 12 17:41 shared.h
-rw-rw-r-- 1 u u   736 Apr 12 17:54 shared.o
Changing dir from /home/u/Desktop/_working/workdir/x86_64/TEST_ONLY_git to ..
[17:54:13][DEBUG] cd ..
[17:54:13][INFO] Building dependency 'test_only': Done!
[17:54:13][DEBUG] Reset CFLAGS/CXXFLAGS/CPPFLAGS/LDFLAGS to: '  -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  '
##############################
### Environment variables:  ###
	CLUTTER_IM_MODULE : xim
	LC_ALL : en_AU.UTF-8
	LS_COLORS : rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.zst=01;31:*.tzst=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.wim=01;31:*.swm=01;31:*.dwm=01;31:*.esd=01;31:*.jpg=01;35:*.jpeg=01;35:*.mjpg=01;35:*.mjpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:
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	QT4_IM_MODULE : xim
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	GJS_DEBUG_OUTPUT : stderr
	GTK_MODULES : gail:atk-bridge
	TERM : xterm-256color
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	VTE_VERSION : 5202
	GNOME_KEYRING_CONTROL : /home/u/.cache/keyring-9WC1I0
	QT_IM_MODULE : xim
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	IM_CONFIG_PHASE : 2
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	LOGNAME : u
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	PATH : /home/u/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/bin:/sbin:/bin:/usr/bin:/usr/local/bin:/snap/bin
	GJS_DEBUG_TOPICS : JS ERROR;JS LOG
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	LESSOPEN : | /bin/lesspipe %s
	GTK_IM_MODULE : ibus
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	_ : ./cross_compiler_v100_001.py
	PKG_CONFIG_PATH : /home/u/Desktop/_working/workdir/toolchain/x86_64-w64-mingw32/x86_64-w64-mingw32/lib/pkgconfig
	PKG_CONFIG_LIBDIR : 
	COLOR : ON
	CLICOLOR_FORCE : ON
	CFLAGS :   -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  
	CXXFLAGS :   -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  
	CPPFLAGS :   -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  
	LDFLAGS :   -O3  -fstack-protector-all  -D_FORTIFY_SOURCE=2  
##############################
##############################
Changing dir from /home/u/Desktop/_working/workdir/x86_64 to ..
[17:54:13][DEBUG] cd ..
Changing dir from /home/u/Desktop/_working/workdir to ..
[17:54:13][DEBUG] cd ..

[bagder]

There are global variables named Curl_isVistaOrGreater and Curl_freq present in both libcurl and the client code. I'm sure this causes problems when the build can't hide non-exported symbols. I think a simple fix would be to stop the curl tool from using libcurl's private prefix (Curl_) for its variables.

Curl_freq:

lib/system_win32.c:LARGE_INTEGER Curl_freq;
src/tool_doswin.c:LARGE_INTEGER Curl_freq;

Curl_isVistaOrGreater:

lib/system_win32.c:bool Curl_isVistaOrGreater;
src/tool_doswin.c:bool Curl_isVistaOrGreater;