Noone reacted to this on [email protected], maybe people here would be
interested.
It seems that now some official package builds are affected by this.
-------- Forwarded Message --------
Subject: multimedia/ffmpeg: fix symbol versioning problem on stable/14
Date: Thu, 25 Sep 2025 16:16:01 +0300
From: Andriy Gapon <[email protected]>
To: [email protected]
Preamble: I made this change a while ago but couldn't find time to share it.
Now I see that ffmpeg 8 is in the works, so maybe I am too late or, at least,
the change will need some rework.
The change addresses an issue similar to
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=284651 and multiple others.
commit 7f9d8df0bafbb3ffbe0399a28b8d232bb2c58612
Author: Andriy Gapon <[email protected]>
AuthorDate: Sat Jun 21 17:16:33 2025 +0300
Commit: Andriy Gapon <[email protected]>
CommitDate: Sat Sep 6 15:47:50 2025 +0300
multimedia/ffmpeg: fix symbol versioning problem on stable/14
This is a well-known issue related to visibility of environ and __progname
symbols from /usr/lib/crt1.o.
This change patches configure to give those symbols global visibility
when testing --version-script support.
Otherwise, the port would produce broken libraries without symbol versions.
This change also adds HAS_SYMBOL_VERSION to catch the problem using
libavcodec.so as a canary.
diff --git a/multimedia/ffmpeg/Makefile b/multimedia/ffmpeg/Makefile
index f7c5d80adeac..fd25b9238021 100644
--- a/multimedia/ffmpeg/Makefile
+++ b/multimedia/ffmpeg/Makefile
@@ -28,6 +28,7 @@ USE_PERL5= build
SHEBANG_FILES= doc/texi2pod.pl
NOPRECIOUSMAKEVARS= yes # ARCH
+HAS_SYMBOL_VERSION= ${PREFIX}/lib/libavcodec.so
PORTSCOUT= limit:^6\.
# Option CHROMAPRINT disabled, it cannot work and people are baffled.
diff --git a/multimedia/ffmpeg/files/patch-configure
b/multimedia/ffmpeg/files/patch-configure
index 9654237228cc..c3a166b984ca 100644
--- a/multimedia/ffmpeg/files/patch-configure
+++ b/multimedia/ffmpeg/files/patch-configure
@@ -28,3 +28,12 @@
-lSPVRemapper -lSPIRV -lSPIRV-Tools-opt
-lSPIRV-Tools -lpthread -lstdc++ -lm; }
enabled libgme && { check_pkg_config libgme libgme gme/gme.h
gme_new_emu ||
require libgme gme/gme.h gme_new_emu -lgme
-lstdc++; }
+@@ -7307,7 +7301,7 @@
+ EOF
+
+ if enabled proper_dce; then
+- echo "X { local: *; };" > $TMPV
++ echo "X { global: environ; __progname; local: *; };" > $TMPV
+ if test_ldflags -Wl,${version_script},$TMPV; then
+ append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
+ quotes='""'
--
Andriy Gapon
