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configure: use pkg-config for libmp3lame when available

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LAME 3.101 adds pkg-config support, generating and installing lame.pc.
Its autotools build also replaces the bundled mpglib decoder with
external libmpg123. Static libmp3lame builds with decoding support
therefore require additional libraries when linking.

The existing check links only against libmp3lame and libm, ignoring
pkg-config metadata and failing with undefined mpg123_* references.

Try pkg-config first to obtain the compiler and linker flags, honoring
the configured pkg-config flags for static dependencies. Keep the
existing library check as a fallback for older LAME releases and other
installations without usable pkg-config metadata.

Signed-off-by: Ruonan <yu_ruonan@outlook.com>
This commit is contained in:
Ruonan authored and James Almer committed 2026-10-26 19:24:59 +00:00
1 parent 8b46bd6487
commit d31915e9dc
1 file changed
+2 -1
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configure
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@@ -7304,7 +7304,8 @@ if enabled libmfx; then
fi
enabled libmodplug && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
enabled libmp3lame && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
enabled libmp3lame && { check_pkg_config libmp3lame "lame >= 3.98.3" lame/lame.h lame_set_VBR_quality ||
require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs; }
enabled libmpeghdec && require_pkg_config libmpeghdec "mpeghdec >= 3.0.0" mpeghdec/mpeghdecoder.h mpeghdecoder_init
enabled libmysofa && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }