X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=configure;h=e8470ae236ba4f1a3ab3ca9c4da6bceafa6f30f0;hb=a050f56c0903c718d8ef0b14dc09195785fdf564;hp=3788f26956ec786053db592bc33d1d75db66b554;hpb=e7a5249ab1775827a331c48e4d236eda52d51575;p=ffmpeg

diff --git a/configure b/configure
index 3788f26956e..e8470ae236b 100755
--- a/configure
+++ b/configure
@@ -462,7 +462,6 @@ EOF
   exit 0
 }
 
-quotes='""'
 if test -t 1 && which tput >/dev/null 2>&1; then
     ncolors=$(tput colors)
     if test -n "$ncolors" && test $ncolors -ge 8; then
@@ -2438,8 +2437,11 @@ amrwb_decoder_select="lsp"
 amv_decoder_select="sp5x_decoder exif"
 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
 ape_decoder_select="bswapdsp llauddsp"
-apng_decoder_select="zlib"
-apng_encoder_select="llvidencdsp zlib"
+apng_decoder_deps="zlib"
+apng_encoder_deps="zlib"
+apng_encoder_select="llvidencdsp"
+aptx_decoder_select="audio_frame_queue"
+aptx_encoder_select="audio_frame_queue"
 asv1_decoder_select="blockdsp bswapdsp idctdsp"
 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
 asv2_decoder_select="blockdsp bswapdsp idctdsp"
@@ -2466,14 +2468,14 @@ dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixbloc
 dolby_e_decoder_select="mdct"
 dvvideo_decoder_select="dvprofile idctdsp"
 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
-dxa_decoder_select="zlib"
+dxa_decoder_deps="zlib"
 dxv_decoder_select="lzf texturedsp"
 eac3_decoder_select="ac3_decoder"
 eac3_encoder_select="ac3_encoder"
 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
 eatgq_decoder_select="aandcttables"
 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
-exr_decoder_select="zlib"
+exr_decoder_deps="zlib"
 ffv1_decoder_select="rangecoder"
 ffv1_encoder_select="rangecoder"
 ffvhuff_decoder_select="huffyuv_decoder"
@@ -2481,15 +2483,16 @@ ffvhuff_encoder_select="huffyuv_encoder"
 fic_decoder_select="golomb"
 flac_decoder_select="flacdsp"
 flac_encoder_select="bswapdsp flacdsp lpc"
-flashsv2_decoder_select="zlib"
-flashsv2_encoder_select="zlib"
-flashsv_decoder_select="zlib"
-flashsv_encoder_select="zlib"
+flashsv2_decoder_deps="zlib"
+flashsv2_encoder_deps="zlib"
+flashsv_decoder_deps="zlib"
+flashsv_encoder_deps="zlib"
 flv_decoder_select="h263_decoder"
 flv_encoder_select="h263_encoder"
 fourxm_decoder_select="blockdsp bswapdsp"
 fraps_decoder_select="bswapdsp huffman"
-g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
+g2m_decoder_deps="zlib"
+g2m_decoder_select="blockdsp idctdsp jpegtables"
 g729_decoder_select="audiodsp"
 h261_decoder_select="mpegvideo"
 h261_encoder_select="aandcttables mpegvideoenc"
@@ -2547,7 +2550,7 @@ mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
 mpeg4_encoder_select="h263_encoder"
 msa1_decoder_select="mss34dsp"
-mscc_decoder_select="zlib"
+mscc_decoder_deps="zlib"
 msmpeg4v1_decoder_select="h263_decoder"
 msmpeg4v2_decoder_select="h263_decoder"
 msmpeg4v2_encoder_select="h263_encoder"
@@ -2563,8 +2566,9 @@ on2avc_decoder_select="mdct"
 opus_decoder_deps="swresample"
 opus_decoder_select="mdct15"
 opus_encoder_select="audio_frame_queue mdct15"
-png_decoder_select="zlib"
-png_encoder_select="llvidencdsp zlib"
+png_decoder_deps="zlib"
+png_encoder_deps="zlib"
+png_encoder_select="llvidencdsp"
 prores_decoder_select="blockdsp idctdsp"
 prores_encoder_select="fdctdsp"
 qcelp_decoder_select="lsp"
@@ -2573,7 +2577,7 @@ ra_144_decoder_select="audiodsp"
 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
 ralf_decoder_select="golomb"
 rawvideo_decoder_select="bswapdsp"
-rscc_decoder_select="zlib"
+rscc_decoder_deps="zlib"
 rtjpeg_decoder_select="me_cmp"
 rv10_decoder_select="h263_decoder"
 rv10_encoder_select="h263_encoder"
@@ -2581,7 +2585,7 @@ rv20_decoder_select="h263_decoder"
 rv20_encoder_select="h263_encoder"
 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
-screenpresso_decoder_select="zlib"
+screenpresso_decoder_deps="zlib"
 shorten_decoder_select="bswapdsp"
 sipr_decoder_select="lsp"
 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
@@ -2590,13 +2594,14 @@ sonic_decoder_select="golomb rangecoder"
 sonic_encoder_select="golomb rangecoder"
 sonic_ls_encoder_select="golomb rangecoder"
 sp5x_decoder_select="mjpeg_decoder"
-srgc_decoder_select="zlib"
+srgc_decoder_deps="zlib"
 svq1_decoder_select="hpeldsp"
 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
 svq3_decoder_suggest="zlib"
 tak_decoder_select="audiodsp"
-tdsc_decoder_select="zlib mjpeg_decoder"
+tdsc_decoder_deps="zlib"
+tdsc_decoder_select="mjpeg_decoder"
 theora_decoder_select="vp3_decoder"
 thp_decoder_select="mjpeg_decoder"
 tiff_decoder_suggest="zlib lzma"
@@ -2605,7 +2610,7 @@ truehd_decoder_select="mlp_parser"
 truehd_encoder_select="lpc"
 truemotion2_decoder_select="bswapdsp"
 truespeech_decoder_select="bswapdsp"
-tscc_decoder_select="zlib"
+tscc_decoder_deps="zlib"
 twinvq_decoder_select="mdct lsp sinewin"
 txd_decoder_select="texturedsp"
 utvideo_decoder_select="bswapdsp llviddsp"
@@ -2639,11 +2644,11 @@ wmv3_decoder_select="vc1_decoder"
 wmv3image_decoder_select="wmv3_decoder"
 xma1_decoder_select="wmapro_decoder"
 xma2_decoder_select="wmapro_decoder"
-zerocodec_decoder_select="zlib"
-zlib_decoder_select="zlib"
-zlib_encoder_select="zlib"
-zmbv_decoder_select="zlib"
-zmbv_encoder_select="zlib"
+zerocodec_decoder_deps="zlib"
+zlib_decoder_deps="zlib"
+zlib_encoder_deps="zlib"
+zmbv_decoder_deps="zlib"
+zmbv_encoder_deps="zlib"
 
 # hardware accelerators
 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
@@ -2699,6 +2704,8 @@ mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
 mpeg_xvmc_hwaccel_deps="xvmc"
 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
+mpeg1_nvdec_hwaccel_deps="nvdec"
+mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
 mpeg1_vdpau_hwaccel_deps="vdpau"
 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
@@ -2714,6 +2721,8 @@ mpeg2_dxva2_hwaccel_deps="dxva2"
 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
 mpeg2_mediacodec_hwaccel_deps="mediacodec"
 mpeg2_mmal_hwaccel_deps="mmal"
+mpeg2_nvdec_hwaccel_deps="nvdec"
+mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
 mpeg2_qsv_hwaccel_deps="libmfx"
 mpeg2_vaapi_hwaccel_deps="vaapi"
 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
@@ -2726,6 +2735,8 @@ mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
 mpeg4_mediacodec_hwaccel_deps="mediacodec"
 mpeg4_mmal_hwaccel_deps="mmal"
+mpeg4_nvdec_hwaccel_deps="nvdec"
+mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
 mpeg4_vaapi_hwaccel_deps="vaapi"
 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
 mpeg4_vdpau_hwaccel_deps="vdpau"
@@ -2740,6 +2751,8 @@ vc1_d3d11va2_hwaccel_select="vc1_decoder"
 vc1_dxva2_hwaccel_deps="dxva2"
 vc1_dxva2_hwaccel_select="vc1_decoder"
 vc1_mmal_hwaccel_deps="mmal"
+vc1_nvdec_hwaccel_deps="nvdec"
+vc1_nvdec_hwaccel_select="vc1_decoder"
 vc1_qsv_hwaccel_deps="libmfx"
 vc1_vaapi_hwaccel_deps="vaapi"
 vc1_vaapi_hwaccel_select="vc1_decoder"
@@ -2763,6 +2776,7 @@ vp9_vaapi_hwaccel_select="vp9_decoder"
 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
+wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
 
@@ -3375,6 +3389,7 @@ pkg_config_default=pkg-config
 ranlib_default="ranlib"
 strip_default="strip"
 version_script='--version-script'
+objformat="elf32"
 x86asmexe_default="nasm"
 windres_default="windres"
 nvcc_default="nvcc"
@@ -3730,6 +3745,8 @@ enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
 
 disabled logging && logfile=/dev/null
 
+# command line configuration sanity checks
+
 # we need to build at least one lib type
 if ! enabled_any static shared; then
     cat <<EOF
@@ -3881,11 +3898,10 @@ case "$toolchain" in
     ;;
 esac
 
-test -n "$cross_prefix" && enable cross_compile
-
-if enabled cross_compile; then
+if test -n "$cross_prefix"; then
     test -n "$arch" && test -n "$target_os" ||
         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
+    enable cross_compile
 fi
 
 ar_default="${cross_prefix}${ar_default}"
@@ -4817,53 +4833,45 @@ check_64bit(){
     expr=$3
     check_code cc "" "int test[2*($expr) - 1]" &&
         subarch=$arch64 || subarch=$arch32
+    enable $subarch
 }
 
 case "$arch" in
     aarch64|alpha|ia64)
-        spic=$shared
+        enabled shared && enable_weak pic
     ;;
     mips)
         check_64bit mips mips64 '_MIPS_SIM > 1'
-        spic=$shared
+        enabled shared && enable_weak pic
     ;;
     parisc)
         check_64bit parisc parisc64 'sizeof(void *) > 4'
-        spic=$shared
+        enabled shared && enable_weak pic
     ;;
     ppc)
         check_64bit ppc ppc64 'sizeof(void *) > 4'
-        spic=$shared
+        enabled shared && enable_weak pic
     ;;
     s390)
         check_64bit s390 s390x 'sizeof(void *) > 4'
-        spic=$shared
+        enabled shared && enable_weak pic
     ;;
     sparc)
         check_64bit sparc sparc64 'sizeof(void *) > 4'
-        spic=$shared
+        enabled shared && enable_weak pic
     ;;
     x86)
         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
-        # Treat x32 as x64 for now. Note it also needs spic=$shared
+        # Treat x32 as x64 for now. Note it also needs pic if shared
         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
-            subarch=x86_64
-        if test "$subarch" = "x86_64"; then
-            spic=$shared
+            subarch=x86_64 && enable x86_64 && disable x86_32
+        if enabled x86_64; then
+            enabled shared && enable_weak pic
+            objformat=elf64
         fi
     ;;
-    ppc)
-        check_cc <<EOF && subarch="ppc64"
-        int test[(int)sizeof(char*) - 7];
-EOF
-    ;;
 esac
 
-enable $subarch
-enabled spic && enable_weak pic
-
-enabled x86_64 && objformat=elf64 || objformat="elf32"
-
 # OS specific
 case $target_os in
     aix)
@@ -4886,7 +4894,7 @@ case $target_os in
         ;;
     sunos)
         SHFLAGS='-shared -Wl,-h,$$(@F)'
-        enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
+        enabled x86 && append SHFLAGS -mimpure-text
         network_extralibs="-lsocket -lnsl"
         add_cppflags -D__EXTENSIONS__
         # When using suncc to build, the Solaris linker will mark
@@ -4953,7 +4961,7 @@ case $target_os in
     mingw32*|mingw64*)
         target_os=mingw32
         if enabled shared; then
-            # Cannot build both shared and static libs when using dllexport.
+            # Cannot build both shared and static libs when using dllimport.
             disable static
         fi
         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
@@ -4968,7 +4976,7 @@ case $target_os in
         SLIB_INSTALL_LINKS=
         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
-        SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
+        SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
         enabled x86_64 && objformat="win64" || objformat="win32"
         ranlib=:
@@ -5004,7 +5012,7 @@ case $target_os in
         SLIBSUF=".dll"
         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
-        SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
+        SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
         SLIB_INSTALL_LINKS=
         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
@@ -5771,16 +5779,13 @@ if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
         enable pthreads
     fi
     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
-fi
-
 
-if enabled pthreads; then
-  check_func pthread_cancel $pthreads_extralibs
+    if enabled pthreads; then
+        check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
+        check_func pthread_cancel $pthreads_extralibs
+    fi
 fi
 
-enabled pthreads &&
-    check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
-
 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
@@ -5902,22 +5907,22 @@ enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h
 
 enabled libvpx            && {
     enabled libvpx_vp8_decoder && {
-        check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
-            check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
-                die "ERROR: libvpx decoder version must be >=0.9.1";
+        check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
+            check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
+                die "ERROR: libvpx decoder version must be >=1.4.0";
     }
     enabled libvpx_vp8_encoder && {
-        check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
-            check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
-                die "ERROR: libvpx encoder version must be >=0.9.7";
+        check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
+            check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
+                die "ERROR: libvpx encoder version must be >=1.4.0";
     }
     enabled libvpx_vp9_decoder && {
-        check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
-            check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
+        check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
+            check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
     }
     enabled libvpx_vp9_encoder && {
-        check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
-            check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
+        check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
+            check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
     }
     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
         die "libvpx enabled but no supported decoders found"
@@ -6289,6 +6294,7 @@ if enabled proper_dce; then
     echo "X { local: *; };" > $TMPV
     if test_ldflags -Wl,${version_script},$TMPV; then
         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
+        quotes='""'
         check_cc <<EOF && enable symver_asm_label
 void ff_foo(void) __asm__ ("av_foo@VERSION");
 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
@@ -6501,6 +6507,15 @@ flatten_extralibs(){
     fi
 }
 
+flatten_extralibs_wrapper(){
+    list_name=$1
+    flatten_extralibs $list_name
+    unique $list_name
+    resolve $list_name
+    eval $list_name=\$\(\$ldflags_filter \$$list_name\)
+    eval printf \''%s'\' \""\$$list_name"\"
+}
+
 for linkunit in $LIBRARY_LIST; do
     unset current_extralibs
     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
@@ -6513,10 +6528,7 @@ for linkunit in $LIBRARY_LIST; do
 done
 
 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
-    flatten_extralibs ${linkunit}_extralibs
-    unique  ${linkunit}_extralibs
-    resolve ${linkunit}_extralibs
-    eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
+    eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
 done
 
 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
@@ -6777,6 +6789,7 @@ endif
 CC_IDENT=$cc_ident
 ARCH=$arch
 INTRINSICS=$intrinsics
+EXTERN_PREFIX=$extern_prefix
 CC=$cc
 CXX=$cxx
 AS=$as