[FFmpeg-devel] [PATCH] configure: Silence Xcode warnings about duplicate libraries

[Martin Storsjö]

Since Xcode 15, macOS developer tools use a new linker. The new
linker by default warns for duplicate -l options. As this is a
known and expected thing, not to be considered an issue, ask for
the warning to be silenced.

This silences linker warnings like this:

    ld: warning: ignoring duplicate libraries: '-lc++', '-lcrypto', '-lm', '-logg', '-lpthread', '-lssl', '-lvorbis', '-lvpx', '-lz'

The linker can also warn about duplicate -rpath options, and there's
currently no option to silence those warnings.
---
 configure | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure b/configure
index d77a55b653..a450b3c8d8 100755
--- a/configure
+++ b/configure
@@ -6480,6 +6480,7 @@ check_cc intrinsics_sse2 emmintrin.h "__m128i test = _mm_setzero_si128()"
 
 check_ldflags -Wl,--as-needed
 check_ldflags -Wl,-z,noexecstack
+check_ldflags -Wl,-no_warn_duplicate_libraries
 
 if ! disabled network; then
     check_func getaddrinfo $network_extralibs
-- 
2.39.5 (Apple Git-154)