avcodec/h264: mmxext 4:2:2 chroma intra deblock/loop filter

[ffmpeg] / configure

diff --git a/configure b/configure
index d0c00564ec07950e4f5bd6faeeacbb753ab7d26e..6345fc2d0dd95521c202870963c8ebac9dc75294 100755 (executable)
--- a/configure
+++ b/configure
@@ -1189,6 +1189,19 @@ check_cpp_condition(){
 EOF
 }
 
+test_cflags_cpp(){
+    log test_cflags_cpp "$@"
+    flags=$1
+    condition=$2
+    shift 2
+    set -- $($cflags_filter "$flags")
+    check_cpp "$@" <<EOF
+#if !($condition)
+#error "unsatisfied condition: $condition"
+#endif
+EOF
+}
+
 check_lib(){
     log check_lib "$@"
     header="$1"
@@ -1836,6 +1849,7 @@ HEADERS_LIST="
     poll_h
     sndio_h
     soundcard_h
+    stdatomic_h
     sys_mman_h
     sys_param_h
     sys_resource_h
@@ -3036,7 +3050,6 @@ cropdetect_filter_deps="gpl"
 delogo_filter_deps="gpl"
 deshake_filter_select="pixelutils"
 drawtext_filter_deps="libfreetype"
-ebur128_filter_deps="gpl"
 eq_filter_deps="gpl"
 fftfilt_filter_deps="avcodec"
 fftfilt_filter_select="rdft"
@@ -4579,7 +4592,15 @@ fi
 add_cppflags -D_ISOC99_SOURCE
 add_cxxflags -D__STDC_CONSTANT_MACROS
 add_cxxflags -std=c++98
-check_cflags -std=c99
+
+# some compilers silently accept -std=c11, so we also need to check that the
+# version macro is defined properly
+if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
+    add_cflags -std=c11
+else
+    check_cflags -std=c99
+fi
+
 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
 #include <stdlib.h>
 EOF
@@ -5569,6 +5590,11 @@ check_header windows.h
 check_header X11/extensions/XvMClib.h
 check_header asm/types.h
 
+# it seems there are versions of clang in some distros that try to use the
+# gcc headers, which explodes for stdatomic
+# so we also check that atomics actually work here
+check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
+
 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi