[Bug 51413] New: winegcc 6.12 regression: options with multiple '=' are not handled correctly

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51413

            Bug ID: 51413
           Summary: winegcc 6.12 regression: options with multiple '=' are
                    not handled correctly
           Product: Wine
           Version: 6.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tools
          Assignee: wine-bugs at winehq.org
          Reporter: slyich at gmail.com
      Distribution: ---

Gentoo passes -Wl,--defsym=__gentoo_check_ldflags__=0 as LDFLAGS to every
linked target as a capary for $LDFLAGS handling. In 6.11 it used to work fine.

6.12 fails the build as:

$ tools/winegcc/winegcc -o dlls/acledit/acledit.dll.so --wine-objdir . -fno-PIC
-Wl,-z,notext -fasynchronous-unwind-tables   -shared
/tmp/portage/app-emulation/wine-vanilla-6.12/work/wine-6.12/dlls/acledit/acledit.spec
  -mno-cygwin -Wb,--prefer-native dlls/acledit/main.o
dlls/ucrtbase/libucrtbase.a -Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu
-Wl,--defsym=__gentoo_check_ldflags__=0

/usr/lib/gcc/x86_64-pc-linux-gnu/12.0.0/../../../../x86_64-pc-linux-gnu/bin/ld:--defsym:0:
syntax error
collect2: error: ld returned 1 exit status
winegcc: /usr/lib/ccache/bin/x86_64-pc-linux-gnu-gcc failed

If I run already installed 6.11 winegcc it works as expected:

$ winegcc -o dlls/acledit/acledit.dll.so --wine-objdir . -fno-PIC -Wl,-z,notext
-fasynchronous-unwind-tables   -shared
/tmp/portage/app-emulation/wine-vanilla-6.12/work/wine-6.12/dlls/acledit/acledit.spec
  -mno-cygwin -Wb,--prefer-native dlls/acledit/main.o
dlls/ucrtbase/libucrtbase.a -Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu
-Wl,--defsym=__gentoo_check_ldflags__=0  -m32
<ok>

$ nm -D dlls/acledit/acledit.dll.so | fgrep gentoo
00000000 A __gentoo_check_ldflags__

I suspect regression cropped up in:

commit fcda0afdd429e11d75dc61f628e40a6c8973ce44
Author: Connor Abbott <cwabbott0 at gmail.com>
Date:   Fri Jul 2 11:48:01 2021 +0200

    winegcc: Support -Wl,foo=... style linker options.

    In particular meson uses -Wl,--out-implib=...

    Signed-off-by: Connor Abbott <cwabbott0 at gmail.com>
    Signed-off-by: Alexandre Julliard <julliard at winehq.org>

diff --git a/tools/winegcc/winegcc.c b/tools/winegcc/winegcc.c
index fd2d2c2a794..8c1e0d088ac 100644
--- a/tools/winegcc/winegcc.c
+++ b/tools/winegcc/winegcc.c
@@ -1982,7 +1982,7 @@ int main(int argc, char **argv)
                     if (strncmp("-Wl,", opts.args->base[i], 4) == 0)
                    {
                         unsigned int j;
-                        strarray* Wl = strarray_fromstring(opts.args->base[i]
+ 4, ",");
+                        strarray* Wl = strarray_fromstring(opts.args->base[i]
+ 4, ",=");
                         for (j = 0; j < Wl->size; j++)
                         {
                             if (!strcmp(Wl->base[j], "--image-base") && j <
Wl->size - 1)

which might not handle multiple '=' correctly.

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