Arch Linux User Repository

Adding -DENABLE_QRCODE=OFF to the cmake call works around the build error zxing_qrcode.cpp:127:17: error: ‘DecodeHints’ was not declared in this scope, but of course would disable the QR code feature. (And probably would make the dependency zxing-cpp obsolete.)

After fixing this (comment from 2026-06-06, 16:21 UTC), build() fails with

[  2%] Building CXX object src/CMakeFiles/mediastreamer2.dir/videofilters/zxing_qrcode.cpp.o
/var/cache/makepkg/build/mediastreamer/src/mediastreamer2-5.4.50/src/videofilters/zxing_qrcode.cpp: In function ‘void read_qrcode(MSFilter*)’:
/var/cache/makepkg/build/mediastreamer/src/mediastreamer2-5.4.50/src/videofilters/zxing_qrcode.cpp:127:17: error: ‘DecodeHints’ was not declared in this scope
  127 |                 DecodeHints hints;
      |                 ^~~~~~~~~~~
/var/cache/makepkg/build/mediastreamer/src/mediastreamer2-5.4.50/src/videofilters/zxing_qrcode.cpp:128:17: error: ‘hints’ was not declared in this scope
  128 |                 hints.setFormats(BarcodeFormat::QRCode); // Search optimization : Only QRCode symbols are used.
      |                 ^~~~~
/var/cache/makepkg/build/mediastreamer/src/mediastreamer2-5.4.50/src/videofilters/zxing_qrcode.cpp:130:17: error: ‘Results’ was not declared in this scope
  130 |                 Results results = ReadBarcodes(qrc->image, hints);
      |                 ^~~~~~~
/var/cache/makepkg/build/mediastreamer/src/mediastreamer2-5.4.50/src/videofilters/zxing_qrcode.cpp:131:40: error: ‘results’ was not declared in this scope
  131 |                 for (size_t i = 0; i < results.size(); ++i) {
      |                                        ^~~~~~~
make[2]: *** [src/CMakeFiles/mediastreamer2.dir/build.make:1787: src/CMakeFiles/mediastreamer2.dir/videofilters/zxing_qrcode.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:499: src/CMakeFiles/mediastreamer2.dir/all] Error 2
make: *** [Makefile:136: all] Error 2
==> ERROR: A failure occurred in build().

Regards!

You need to put fix-build-ffmpeg5.patch in the source array, otherwise it won't be found if $BUILDDIR is set in e.g. /etc/makepkg.conf:

==> Starting prepare()...
/var/cache/yay/mediastreamer/PKGBUILD: line 21: ../../fix-build-ffmpeg5.patch: No such file or directory
==> ERROR: A failure occurred in prepare().

Also, you should never leave $srcdir while building. ../../fix-build-ffmpeg5.patch is not well defined. Use "${srcdir}/fix-build-ffmpeg5.patch" instead.
Build does not necessarily take place in a subdirectory of where the PKGBUILD is

Patch to PKGBUILD:

--- PKGBUILD.orig   2026-06-06 18:16:28.825297757 +0200
+++ PKGBUILD    2026-06-06 18:20:07.489138661 +0200
@@ -15,4 +15,7 @@
 makedepends=(cmake python bcunit doxygen)
-source=(https://gitlab.linphone.org/BC/public/${pkgname}2/-/archive/$pkgver/${pkgname}2-$pkgver.tar.bz2)
-sha256sums=('819f0160f2344660ff337537dcbe0b3b5a6c7628be0ed2f6684edd9b6ce332e5')
+source=(https://gitlab.linphone.org/BC/public/${pkgname}2/-/archive/$pkgver/${pkgname}2-$pkgver.tar.bz2
+        fix-build-ffmpeg5.patch
+)
+sha256sums=('819f0160f2344660ff337537dcbe0b3b5a6c7628be0ed2f6684edd9b6ce332e5'
+            'a069ca2db409ec60010b10357a9f081809f521a9c0306f89bd49bb16121acfc1')

@@ -20,3 +23,3 @@
     cd "${pkgname}2-${pkgver}"
-    patch -p1 < ../../fix-build-ffmpeg5.patch
+    patch -p1 < "${srcdir}/fix-build-ffmpeg5.patch"
 }

Regards and thanks for maintaining!

It builds, you need to remove ffmpeg temporarily. (You can install it back after building mediastreamer). I need to fix the CMake file to not look for ffmpeg first.

So...apparently nobody cares that this won't build. Why even have it in the AUR then?

Getting the same build error as @dreieck - conflicting types for ‘avcodec_alloc_context3’; have ‘AVCodecContext (AVCodec )’

Build fails for me with mediastreamer2-5.3.1/src/utils/ffmpeg-priv.h:121:17: error: conflicting types for ‘avcodec_alloc_context3’; have ‘AVCodecContext *(AVCodec *)’:

[ 55%] Building C object src/CMakeFiles/mediastreamer2.dir/voip/msvideo.c.o
In file included from /tmp/makepkg/build/mediastreamer/src/mediastreamer2-5.3.1/src/voip/msvideo.c:25:
/tmp/makepkg/build/mediastreamer/src/mediastreamer2-5.3.1/src/utils/ffmpeg-priv.h:121:17: error: conflicting types for ‘avcodec_alloc_context3’; have ‘AVCodecContext *(AVCodec *)’
  121 | AVCodecContext *avcodec_alloc_context3(AVCodec *codec);
      |                 ^~~~~~~~~~~~~~~~~~~~~~
In file included from /tmp/makepkg/build/mediastreamer/src/mediastreamer2-5.3.1/src/utils/ffmpeg-priv.h:51:
/usr/include/libavcodec/avcodec.h:2306:17: note: previous declaration of ‘avcodec_alloc_context3’ with type ‘AVCodecContext *(const AVCodec *)’
 2306 | AVCodecContext *avcodec_alloc_context3(const AVCodec *codec);
      |                 ^~~~~~~~~~~~~~~~~~~~~~
make[2]: *** [src/CMakeFiles/mediastreamer2.dir/build.make:1266: src/CMakeFiles/mediastreamer2.dir/voip/msvideo.c.o] Error 1

(pkgver=5.3.1)

Regards!

Can yoi please add provides=("mediastreamer2=${pkgver}"), conflicts=("mediastreamer2")?

Upstream name is still "mediastreamer2" and there are packages that depend on it.

Regards and thanks for maintaining!

I had bctoolbox-git 5.2.0.alpha.r0.gd92d04f-1.

A rebuild (via pamac UI) said it would be downgraded to bctoolbox-git 4.5.0.alpha.r54.gab40b02-1.

But actually it was updated to bctoolbox-git 5.3.0.alpha.r1.gabd8da3-1.

Anyways now mediastreamer builds. Thank you.

Which version of bctoolbox do you have? You need to rebuild it.