PR #23509 opened by Hunter Kvalevog (kvog)
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23509
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23509.patch

Hi. This is related in spirit to #21177. Currently, `--enable-libtheora` does 
not find libtheora on macOS when theora is installed via Homebrew.

Detection via pkg-config is done in addition to the existing method, as 
recommended in the linked PR.

theoraenc.pc will link `-ltheoraenc`, `-ltheoradec`, and `-logg`, and has [for 
a long 
time](https://gitlab.xiph.org/xiph/theora/-/commits/main/theoraenc.pc.in).


>From 39635fcc3b5f601f93ffaf72cba730facc875100 Mon Sep 17 00:00:00 2001
From: Hunter Kvalevog <[email protected]>
Date: Mon, 15 Jun 2026 13:56:07 -0500
Subject: [PATCH] configure: add pkg-config check for libtheora

This allows libtheora to be found via pkg-config in addition to the
existing approach.

Signed-off-by: Hunter Kvalevog <[email protected]>
---
 configure | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index e67aa362ad..ceb11ac8d0 100755
--- a/configure
+++ b/configure
@@ -7472,7 +7472,8 @@ enabled libsvtav1         && require_pkg_config libsvtav1 
"SvtAv1Enc >= 0.9.0" E
 enabled libsvtjpegxs      && require_pkg_config libsvtjpegxs "SvtJpegxs >= 
0.10.0" SvtJpegxsEnc.h svt_jpeg_xs_encoder_init
 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h 
TF_Version -ltensorflow
 enabled libtesseract      && require_pkg_config libtesseract tesseract 
tesseract/capi.h TessBaseAPICreate
-enabled libtheora         && require libtheora theora/theoraenc.h th_info_init 
-ltheoraenc -ltheoradec -logg
+enabled libtheora         && { check_pkg_config libtheora theoraenc 
theora/theoraenc.h th_info_init ||
+                               require libtheora theora/theoraenc.h 
th_info_init -ltheoraenc -ltheoradec -logg; }
 enabled libtls            && require_pkg_config libtls libtls tls.h 
tls_configure &&
                              { enabled gpl && ! enabled nonfree && die "ERROR: 
LibreSSL is incompatible with the gpl"; }
 enabled libtorch          && check_cxxflags -std=c++17 && require_cxx libtorch 
torch/torch.h "torch::Tensor" -ltorch -lc10 -ltorch_cpu -lstdc++ -lpthread
-- 
2.52.0

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