[FFmpeg-devel] [PATCH 3/3] configure: fail if autodetect-libraries are requested but not found

[Andreas Cadhalpun]

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
---
 configure | 72 ++++++++++++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 53 insertions(+), 19 deletions(-)

diff --git a/configure b/configure
index 28c78ef..0e9695b 100755
--- a/configure
+++ b/configure
@@ -597,6 +597,13 @@ popvar(){
     done
 }
 
+request(){
+    for var in $*; do
+        eval ${var}_requested=yes
+        eval $var=
+    done
+}
+
 enable(){
     set_all yes $*
 }
@@ -653,6 +660,11 @@ enable_deep_weak(){
     done
 }
 
+requested(){
+    test "${1#!}" = "$1" && op='=' || op=!=
+    eval test "x\$${1#!}_requested" $op "xyes"
+}
+
 enabled(){
     test "${1#!}" = "$1" && op='=' || op=!=
     eval test "x\$${1#!}" $op "xyes"
@@ -1481,10 +1493,25 @@ EXAMPLE_LIST="
     transcode_aac_example
     transcoding_example
 "
+EXTERNAL_AUTODETECT_LIBRARY_LIST="
+    bzlib
+    iconv
+    libxcb
+    libxcb_shm
+    libxcb_shape
+    libxcb_xfixes
+    lzma
+    schannel
+    sdl
+    sdl2
+    securetransport
+    xlib
+    zlib
+"
 
 EXTERNAL_LIBRARY_LIST="
+    $EXTERNAL_AUTODETECT_LIBRARY_LIST
     avisynth
-    bzlib
     chromaprint
     crystalhd
     decklink
@@ -1492,7 +1519,6 @@ EXTERNAL_LIBRARY_LIST="
     gcrypt
     gmp
     gnutls
-    iconv
     jni
     ladspa
     libass
@@ -1545,42 +1571,26 @@ EXTERNAL_LIBRARY_LIST="
     libx264
     libx265
     libxavs
-    libxcb
-    libxcb_shm
-    libxcb_shape
-    libxcb_xfixes
     libxvid
     libzimg
     libzmq
     libzvbi
-    lzma
     mediacodec
     netcdf
     openal
     opencl
     opengl
     openssl
-    schannel
-    sdl
-    sdl2
-    securetransport
     videotoolbox
     x11grab
-    xlib
-    zlib
 "
-
-HWACCEL_LIBRARY_LIST="
+HWACCEL_AUTODETECT_LIBRARY_LIST="
     audiotoolbox
     cuda
     cuvid
     d3d11va
     dxva2
-    libmfx
-    libnpp
-    mmal
     nvenc
-    omx
     vaapi
     vda
     vdpau
@@ -1588,6 +1598,14 @@ HWACCEL_LIBRARY_LIST="
     xvmc
 "
 
+HWACCEL_LIBRARY_LIST="
+    $HWACCEL_AUTODETECT_LIBRARY_LIST
+    libmfx
+    libnpp
+    mmal
+    omx
+"
+
 DOCUMENT_LIST="
     doc
     htmlpages
@@ -1684,6 +1702,12 @@ ATOMICS_LIST="
     atomics_win32
 "
 
+AUTODETECT_LIBS="
+    $EXTERNAL_AUTODETECT_LIBRARY_LIST
+    $HWACCEL_AUTODETECT_LIBRARY_LIST
+    $THREADS_LIST
+"
+
 ARCH_LIST="
     aarch64
     alpha
@@ -3482,6 +3506,11 @@ for e in $env; do
     eval "export $e"
 done
 
+# Mark specifically enabled, but normally autodetected libraries as requested.
+for lib in $AUTODETECT_LIBS; do
+    enabled $lib && request $lib
+done
+
 # Enable platform codecs by default.
 enable audiotoolbox
 
@@ -6381,6 +6410,11 @@ for thread in $THREADS_LIST; do
     fi
 done
 
+# Check if requested libraries were found.
+for lib in $AUTODETECT_LIBS; do
+    requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
+done
+
 enabled zlib && add_cppflags -DZLIB_CONST
 
 # conditional library dependencies, in linking order
-- 
2.10.2