build: Do not link plugin against lzma and bz2 if using system install

And bump version to 1.9.2

config.h.meson

@@ -1,6 +1,3 @@
-#mesondefine HAVE_LZMA
-#mesondefine HAVE_BZ2
 #mesondefine LIBAV_SOURCE
 #mesondefine PACKAGE_VERSION
 #mesondefine PACKAGE
-

configure.ac

@@ -244,30 +244,6 @@ case $host_os in
 esac
 AC_SUBST(DARWIN_LDFLAGS)
 
-dnl *** Check for bz2
-save_LIBS=$LIBS
-LIBS="$LIBS -lbz2"
-AC_MSG_CHECKING([for BZ2_bzlibVersion in -lbz2])
-AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <bzlib.h>]], [[const char *version = BZ2_bzlibVersion ();]])],[HAVE_BZ2=yes],[HAVE_BZ2=no])
-AC_MSG_RESULT($HAVE_BZ2)
-LIBS=$save_LIBS
-AM_CONDITIONAL(HAVE_BZ2, test "x$HAVE_BZ2" = "xyes")
-if test "x$HAVE_BZ2" = "xno"; then
-  AC_WARN([libbz2 not found, matroska demuxer will not be able to read bz2 tracks])
-fi
-
-dnl *** Check for lzma
-save_LIBS=$LIBS
-LIBS="$LIBS -llzma"
-AC_MSG_CHECKING([for lzma_version_string in -llzma])
-AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <lzma.h>]], [[const char *version = lzma_version_string ();]])],[HAVE_LZMA=yes],[HAVE_LZMA=no])
-AC_MSG_RESULT($HAVE_LZMA)
-LIBS=$save_LIBS
-AM_CONDITIONAL(HAVE_LZMA, test "x$HAVE_LZMA" = "xyes")
-if test "x$HAVE_LZMA" = "xno"; then
-    AC_WARN([lzma not found, tiff reader will not be able to read lzma files])
-fi
-
 AC_ARG_ENABLE(gpl,
               [AC_HELP_STRING([--enable-gpl], [build a GPL licensed gst-libav])])
 AM_CONDITIONAL(GST_LIBAV_ENABLE_GPL, test "x$enable_gpl" = "xyes")
@@ -282,6 +258,8 @@ HAVE_LIBAV_UNINSTALLED=1
 AC_ARG_WITH(system-libav,
             [AC_HELP_STRING([--with-system-libav], [use system Libav libraries])])
 
+HAVE_LZMA = "no"
+HAVE_BZ2 = "no"
 if test "x$with_system_libav" = "xyes"; then
   PKG_CHECK_MODULES(LIBAV, libavfilter libavformat libavcodec libavutil)
   PKG_CHECK_MODULES(SWSCALE, libswscale libavutil)
@@ -309,6 +287,28 @@ if test "x$with_system_libav" = "xyes"; then
 else
   AC_MSG_NOTICE([Using local Libav snapshot])
 
+  dnl *** Check for bz2
+  save_LIBS=$LIBS
+  LIBS="$LIBS -lbz2"
+  AC_MSG_CHECKING([for BZ2_bzlibVersion in -lbz2])
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <bzlib.h>]], [[const char *version = BZ2_bzlibVersion ();]])],[HAVE_BZ2=yes],[HAVE_BZ2=no])
+  AC_MSG_RESULT($HAVE_BZ2)
+  LIBS=$save_LIBS
+  if test "x$HAVE_BZ2" = "xno"; then
+    AC_WARN([libbz2 not found, matroska demuxer will not be able to read bz2 tracks])
+  fi
+
+  dnl *** Check for lzma
+  save_LIBS=$LIBS
+  LIBS="$LIBS -llzma"
+  AC_MSG_CHECKING([for lzma_version_string in -llzma])
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <lzma.h>]], [[const char *version = lzma_version_string ();]])],[HAVE_LZMA=yes],[HAVE_LZMA=no])
+  AC_MSG_RESULT($HAVE_LZMA)
+  LIBS=$save_LIBS
+  if test "x$HAVE_LZMA" = "xno"; then
+    AC_WARN([lzma not found, tiff reader will not be able to read lzma files])
+  fi
+
   dnl libgstlibav.la: include dirs
   LIBAV_CFLAGS="-I \$(top_srcdir)/gst-libs/ext/libav \
                 -I \$(top_builddir)/gst-libs/ext/libav \
@@ -466,6 +466,9 @@ else
   AC_MSG_NOTICE([Using included Libav code])
 fi
 
+AM_CONDITIONAL(HAVE_BZ2, test "x$HAVE_BZ2" = "xyes")
+AM_CONDITIONAL(HAVE_LZMA, test "x$HAVE_LZMA" = "xyes")
+
 AC_SUBST(LIBAV_CFLAGS)
 AC_SUBST(LIBAV_DEPS)
 AC_SUBST(LIBAV_LIBS)

ext/libav/meson.build

@@ -18,7 +18,7 @@ gstlibav = library('gstlibav',
     c_args : gst_libav_args,
     include_directories : [configinc],
     dependencies : libav_deps + [gst_dep, gstbase_dep, gstvideo_dep,
-        gstaudio_dep, gstpbutils_dep, libm, bz2lib],
+        gstaudio_dep, gstpbutils_dep],
     install : true,
     install_dir : plugins_install_dir,
   )

meson.build

@@ -1,5 +1,5 @@
 project('gst-libav', 'c', 'cpp',
-  version : '1.9.1.1',
+  version : '1.9.2.1',
   meson_version : '>= 0.33.0',
   default_options : [ 'warning_level=1',
                       'c_std=gnu99',
@@ -26,7 +26,7 @@ check_ffmpeg_src = '''#include <libavcodec/avcodec.h>
 #error libav provider should be FFmpeg
 #endif'''
 
-if not cc.compiles(check_ffmpeg_src, name : 'whether libav is provided by FFmpeg')
+if not cc.compiles(check_ffmpeg_src, name : 'libav is provided by FFmpeg')
     error('Uncompatible libavcodec found')
 endif
 
@@ -49,20 +49,6 @@ gstpbutils_dep = dependency('gstreamer-pbutils-1.0', version : gst_req,
     fallback : ['gst-plugins-base', 'pbutils_dep'])
 libm = cc.find_library('m', required : false)
 
-bz2lib = cc.find_library('bz2', required : false)
-if bz2lib.found()
-  cdata.set('HAVE_BZ2', 1)
-else
-    message('WARN: libbz2 not found, matroska demuxer will not be able to read bz2 tracks')
-endif
-
-lzmalib = cc.find_library('lzma', required : false)
-if lzmalib.found()
-  cdata.set('HAVE_LZMA', 1)
-else
-    message('WARN: lzma not found, tiff reader will not be able to read lzma files')
-endif
-
 configure_file(input : 'config.h.meson',
   output : 'config.h',
   configuration : cdata)