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build: Fix version script linker support detection

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When the linker uses --no-undefined-version either specified by the user
or as the default behavior (such as with newer clang >= 16 releases),
a missing symbol definition will cause a linker error if that symbol is
listed in the version script.
This commit is contained in:
Guillem Jover 2023-02-12 23:55:09 +01:00
parent fe21244b05
commit dec783dce5
1 changed files with 5 additions and 1 deletions
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6
configure.ac
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@ -39,7 +39,11 @@ AC_CACHE_CHECK([if ld supports --version-script flag],
save_LDFLAGS=$LDFLAGS save_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map" LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map"
AC_LINK_IFELSE([ AC_LINK_IFELSE([
AC_LANG_PROGRAM([], []) AC_LANG_PROGRAM([[
extern int symbol(void);
int symbol(void) { return 0; }
]], [[
]])
], [ ], [
libbsd_cv_version_script=yes libbsd_cv_version_script=yes
], [ ], [