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• Error for android-ndk-r21d and ffmpeg-snapshot

  4 août 2020, par yejafot

  why im getting the below errors.
Am i done any misconfiguration in the build file ?

  


  Can you change it according, im trying to configure for arm64_v8a (.so) file for android jni in my linux machine. Thanks !

  


  Below is my build file.

  


  #!/bin/bash
export NDK=/media/sf_sharing/android-ndk-r21d
export SYSROOT=$NDK/platforms/android-21/arch-arm64/
export TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64
export TARGET=aarch64-linux-android
export API=21
export AR=$TOOLCHAIN/bin/$TARGET-ar
export CC=$TOOLCHAIN/bin/$TARGET$API-clang
export CXX=$TOOLCHAIN/bin/$TARGET$API-clang++
export LD=$TOOLCHAIN/bin/$TARGET-ld
export RANLIB=$TOOLCHAIN/bin/$TARGET-ranlib
export STRIP=$TOOLCHAIN/bin/$TARGET-strip
export CROSS_PREFIX=$NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64
rm -f $(pwd)/compat/strtod.o     
function build_one
        {
         ./configure\
         --prefix=$PREFIX\
         --enable-shared\
         --disable-static\
         --ar=$AR\
         --cc=$CC\
         --cxx=$CXX\
         --pkg-config=$(which pkg-config)\
         --ld=$LD\
         --ranlib=$RANLIB\
         --strip=$STRIP\
         --enable-protocol=file\
         --enable-pic\
         --enable-small\
         --disable-programs\
         --disable-doc\
         --disable-symver\
         --target-os=android\
         --sysinclude=$TOOLCHAIN/sysroot/usr/include\
         --enable-cross-compile\
         --cross-prefix=$TOOLCHAIN/bin/$TARGET-\
         --extra-cflags="-Os -fpic $ADDI_CFLAGS"\
         --extra-ldflags="$ADDI_LDFLAGS"\
         --sysroot=$TOOLCHAIN/sysroot $ADDITIONAL_CONFIG_FLAG
         make clean
         make -j2
         make install
        }
        CPU=arm64-v8a
        mkdir -p $(pwd)/android/$CPU
        PREFIX=$(pwd)/android/$CPU
        ADDI_CFLAGS="-march=armv8-a"
        #ADDI_LDFLAGS="-L$TOOLCHAIN/sysroot/usr/lib"
        ADDI_LDFLAGS="-L$SYSROOT/usr/lib"
        ADDITIONAL_CONFIG_FLAG="--arch=aarch64 --enable-yasm"
        build_one


  


  Error :

  


  INSTALL doc/examples/Makefile
CC  libavdevice/alldevices.o
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:39:
In file included from /media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/local/include/stdlib.h:32:
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/stdlib.h:61:7: error: expected identifier or '('
char* getenv(const char* __name);
      ^
./config.h:17:19: note: expanded from macro 'getenv'
#define getenv(x) NULL
                  ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/9.0.8/include/stddef.h:89:18: note: expanded from macro 'NULL'
#  define NULL ((void*)0)
                 ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:39:
In file included from /media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/local/include/stdlib.h:32:
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/stdlib.h:61:7: error: expected ')'
./config.h:17:19: note: expanded from macro 'getenv'
#define getenv(x) NULL
                  ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/9.0.8/include/stddef.h:89:18: note: expanded from macro 'NULL'
#  define NULL ((void*)0)
                 ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/stdlib.h:61:7: note: to match this '('
./config.h:17:19: note: expanded from macro 'getenv'
#define getenv(x) NULL
                  ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/9.0.8/include/stddef.h:89:17: note: expanded from macro 'NULL'
#  define NULL ((void*)0)
                ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:39:
In file included from /media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/local/include/stdlib.h:32:
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/stdlib.h:61:7: error: expected ')'
char* getenv(const char* __name);
      ^
./config.h:17:19: note: expanded from macro 'getenv'
#define getenv(x) NULL
                  ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/9.0.8/include/stddef.h:89:24: note: expanded from macro 'NULL'
#  define NULL ((void*)0)
                       ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/stdlib.h:61:7: note: to match this '('
./config.h:17:19: note: expanded from macro 'getenv'
#define getenv(x) NULL
                  ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/9.0.8/include/stddef.h:89:16: note: expanded from macro 'NULL'
#  define NULL ((void*)0)
               ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:54:32: error: static declaration of 'cbrt' follows non-static declaration
static av_always_inline double cbrt(double x)
                               ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:191:8: note: previous declaration is here
double cbrt(double __x);
       ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:61:31: error: static declaration of 'cbrtf' follows non-static declaration
static av_always_inline float cbrtf(float x)
                              ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:192:7: note: previous declaration is here
float cbrtf(float __x);
      ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:68:32: error: static declaration of 'copysign' follows non-static declaration
static av_always_inline double copysign(double x, double y)
                               ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:279:8: note: previous declaration is here
double copysign(double __value, double __sign) __attribute_const__;
       ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:121:22: error: static declaration of 'erf' follows non-static declaration
static inline double erf(double z)
                     ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:211:8: note: previous declaration is here
double erf(double __x);
       ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:340:9: warning: 'isnan' macro redefined [-Wmacro-redefined]
#define isnan(x)                  \
        ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:69:9: note: previous definition is here
#define isnan(x) __builtin_isnan(x)
        ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:359:9: warning: 'isfinite' macro redefined [-Wmacro-redefined]
#define isfinite(x)                  \
        ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:65:9: note: previous definition is here
#define isfinite(x) __builtin_isfinite(x)
        ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:366:31: error: static declaration of 'hypot' follows non-static declaration
static inline av_const double hypot(double x, double y)
                              ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:199:8: note: previous declaration is here
double hypot(double __x, double __y);
       ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:423:22: error: static declaration of 'rint' follows non-static declaration
static inline double rint(double x)
                     ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:239:8: note: previous declaration is here
double rint(double __x);
       ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:430:43: error: static declaration of 'lrint' follows non-static declaration
static av_always_inline av_const long int lrint(double x)
                                          ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:243:6: note: previous declaration is here
long lrint(double __x);
     ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:437:43: error: static declaration of 'lrintf' follows non-static declaration
static av_always_inline av_const long int lrintf(float x)
                                          ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:244:6: note: previous declaration is here
long lrintf(float __x);
     ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:444:41: error: static declaration of 'round' follows non-static declaration
static av_always_inline av_const double round(double x)
                                        ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:251:8: note: previous declaration is here
double round(double __x);
       ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:451:40: error: static declaration of 'roundf' follows non-static declaration
static av_always_inline av_const float roundf(float x)
                                       ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:252:7: note: previous declaration is here
float roundf(float __x);
      ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:458:41: error: static declaration of 'trunc' follows non-static declaration
static av_always_inline av_const double trunc(double x)
                                        ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:263:8: note: previous declaration is here
double trunc(double __x);
       ^
In file included from libavdevice/alldevices.c:23:
In file included from ./libavformat/internal.h:27:
In file included from ./libavformat/avformat.h:312:
In file included from ./libavcodec/avcodec.h:31:
In file included from ./libavutil/samplefmt.h:24:
In file included from ./libavutil/avutil.h:296:
In file included from ./libavutil/common.h:533:
In file included from ./libavutil/internal.h:143:
./libavutil/libm.h:465:40: error: static declaration of 'truncf' follows non-static declaration
static av_always_inline av_const float truncf(float x)
                                       ^
/media/sf_sharing/android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/math.h:264:7: note: previous declaration is here
float truncf(float __x);
      ^
2 warnings and 15 errors generated.
make: *** [libavdevice/alldevices.o] Error 1
santoku@santoku:/media/sf_sharing/ffmpeg$


  


  i tried all old version of ffmpeg,ndk with different build files but that didnt work so now im trying this latest ffmpeg-snapshot and ndk21

  


• cmake installation of x265 for ffmpeg on Cygwin - executable location different from other codecs

  6 mai, par bballdave025

  TL ;DR (with expected vs. real)

  


  For a Cygwin build of ffmpeg, I'm installing x265, and it seems to me that the executable ends up in the wrong place. I'll show some basic directory structure, then I'll show the tree outputs for expected and real, both before and after the cmake installation. For directories where I think this is important, I'll show the outputs before and after the cmake installation.

  


  My question has two parts. I used the following cmake and make commands,

  


  # pwd => $HOME/programs/ffmpeg/ffmpeg_sources/x265/build/linux
PATH="$HOME/programs/ffmpeg/bin:$PATH" \
  cmake -G "Unix Makefiles" \
        -DCMAKE_INSTALL_PREFIX="$HOME/programs/ffmpeg/ffmpeg_build" \
        -DENABLE_SHARED=OFF \
        -DCMAKE_EXE_LINKER_FLAGS="-static" 
            ../../source
PATH="$HOME/programs/ffmpeg/bin:$PATH" make -j $(nproc)
make install


  


  The result is below, with my real vs. expected, and there is a more detailed, more explicit, and hopefully more clear file with the info. at pastebin.com/86wHrtxR.

  


  Edit : I've made a copy of the detailed/explicit/clear file on my GitHub as a gist. This should be more secure. (The Pastebin version still exists, in case that is your preference.)

  


  Now, for my two-part question :

  


  


  1. How can I change my cmake command so that my x265.exe file ends up in $HOME/programs/ffmpeg/bin with the proper linking, rather than $HOME/programs/ffmpeg/ffmpeg_build/bin ?

     


  


  2. Would the build/linker/whatever figure things out for the ffmpeg build ?

     


  


  


  I want to know the answer to question number 1 regardless of the answer to question number 2. I haven't used cmake with the -DVAR=var flags before, and I'd like to take this opportunity to learn.

  


  For the result :

  


  Things surrounded by double curly brackets are {{ expected }}.

  


  Things surrounded by double angle brackets are << real >>, i.e. they exist after the installation is done.

  


  If real matches expected, and the file/directory is new, I've surrounded it by double parentheses, i.e. double round brackets. (( match ))

  


  If something is not new (and thus has the same before and after) I haven't marked it.

  


     me@MACHINE ~/programs/ffmpeg&#xA;   $ tree --charset=ascii bin&#xA;   bin&#xA;   |-- lame.exe&#xA;   |-- mp3rtp.exe&#xA;   |-- mp3x.exe&#xA;   `-- x264.exe&#xA;{{ `-- x265.exe                     }} ## Expected, not Exists&#xA;&#xA;   me@MACHINE ~/programs/ffmpeg&#xA;   $ tree --charset=ascii \&#xA;                   ffmpeg_build&#xA;   ffmpeg_build&#xA;&lt;&lt; |-- bin                          >> ## Not expected, Exists&#xA;&lt;&lt; |   `-- x265.exe                 >> ## Not expected, Exists&#xA;   |-- include&#xA;   |   |-- fdk-aac&#xA;   |   |   |-- aacdecoder_lib.h&#xA;   |   |   |-- aacenc_lib.h&#xA;   |   |   `-- ... <more files="files">&#xA;   |   |-- lame&#xA;   |   |   `-- lame.h&#xA;   |   |-- x264.h&#xA;   |   `-- x264_config.h&#xA;(( |   |-- x265.h                   )) ## Expected and Exists&#xA;(( |   `-- x265_config.h            )) ## Expected and Exists&#xA;   |-- lib&#xA;   |   |-- libfdk-aac.a&#xA;   |   |-- libfdk-aac.la&#xA;   |   |-- libmp3lame.a&#xA;   |   |-- libmp3lame.la&#xA;(( |   |-- libx265.a                )) ## Expected and Exists&#xA;   |   `-- pkgconfig&#xA;   |       |-- fdk-aac.pc&#xA;   |       `-- x264.pc&#xA;(( |       `-- x265.pc              )) ## Expected and Exists&#xA;   `-- share&#xA;       |-- doc&#xA;       |   ... <only lame="lame">&#xA;       `-- man&#xA;           ... <only lame="lame">&#xA;</only></only></more>

  


  Other, possibly useful information about the build directory structure.

  


  me@MACHINE ~/programs/ffmpeg
$ tree --charset=ascii -L 1 .
.
|-- bin
|-- ffmpeg_build
`-- ffmpeg_sources

3 directories, 0 files


  


  For this next, ffmpeg_sources dir, I'm showing the after (which is both expected and real/exists) surrounded by double parentheses, i.e. double round brackets, (( <after> ))</after>.

  


     me@MACHINE ~/programs/ffmpeg
   $ tree --charset=ascii -L 1 ffmpeg_sources
   ffmpeg_sources
   |-- fdk-aac.zip
   |-- lame-svn
   |-- mstorsjo-fdk-aac-e7d8591
   |-- x264-snapshot-20191217-2245
   |-- x264-snapshot-20191217-2245.tar.bz2
   `-- x264-snapshot-20191218-README.txt
(( `-- x265                         ))

   3 directories, 3 files
(( 4 directories, 3 files ))


  


  ---

  


  NOW, FOR SOME MORE DETAIL

  


  ---

  


  What I'm Doing

  


  I am working on a Cygwin build (vs. a Windows/mingw build) of ffmpeg. I am following an older guide by koohiimaster (archived). That guide says,

  


  


  [W]e are not cross-compiling for windows ; we are compiling for Cygwin.

  


  


  This 2014 guide doesn't have all of the codecs I want - I want as complete a build as possible - so I've also been referring to this ffmpeg-for-Ubuntu guide (archived), which I hope is kept up-to-date. It's referred to by koohiimaster.

  


  Also, as a way of checking that I'm getting all the codecs I want, I've been looking at this FFmpeg for Windows guide from SuperUser

  


  I'll give the basics of my steps below. More details, as well as all the output is at pastebin.com/suL1nU6Z.

  


  Edit : I've put the log of terminal input/output for all my steps into a gist at my GitHub as this seems safer than Pastebin.

  


  A look at directory structure for the build

  


  me@MACHINE ~/programs/ffmpeg
$ cd $HOME/programs/ffmpeg

me@MACHINE ~/programs/ffmpeg
$ tree --charset=ascii -d -L 1
.
|-- bin
|-- ffmpeg_build
`-- ffmpeg_sources

3 directories


  


  Getting the source. Note that I had to apt-cyg install mercurial, though (with my Cygwin setup GUI/EXE in my Cygwin root directory, i.e. C:\cygwin64\setup-x86_64.exe), I could also have done /setup-x86_64.exe install -q -P mercurial.

  


  cd ffmpeg_sources
hg clone https://bitbucket.org/multicoreware/x265


  


  Running the cmake and make commands

  


  cd x265/build/linux
PATH="$HOME/programs/ffmpeg/bin:$PATH" \
  cmake -G "Unix Makefiles" \
        -DCMAKE_INSTALL_PREFIX="$HOME/programs/ffmpeg/ffmpeg_build" \
        -DENABLE_SHARED=OFF \
        -DCMAKE_EXE_LINKER_FLAGS="-static" \
            ../../source
PATH="$HOME/programs/ffmpeg/bin:$PATH" make -j $(nproc)
make install


  


  It was the last part (actually the very last line) of the make install output that worried me. Here is the whole output - it's not very long.

  


  make[1]: Entering directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
make[2]: Entering directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
make[2]: Leaving directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
[ 20%] Built target encoder
make[2]: Entering directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
make[2]: Leaving directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
[ 83%] Built target common
make[2]: Entering directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
make[2]: Leaving directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
[ 84%] Built target x265-static
make[2]: Entering directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
make[2]: Leaving directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
[100%] Built target cli
make[1]: Leaving directory '/home/me/programs/ffmpeg/ffmpeg_sources/x265/build/linux'
Install the project...
-- Install configuration: "Release"
-- Installing: /home/me/programs/ffmpeg/ffmpeg_build/lib/libx265.a
-- Installing: /home/me/programs/ffmpeg/ffmpeg_build/include/x265.h
-- Installing: /home/me/programs/ffmpeg/ffmpeg_build/include/x265_config.h
-- Installing: /home/me/programs/ffmpeg/ffmpeg_build/lib/pkgconfig/x265.pc
-- Installing: /home/me/programs/ffmpeg/ffmpeg_build/bin/x265.exe


  


  As discussed in the TL ;DR section, I expected to see x265.exe at

  


  home/me/programs/ffmpeg/bin/x265.exe

  


  rather than the path given on the last line of output,

  


  /home/me/programs/ffmpeg/ffmpeg_build/bin/x265.exe

  


  This worries me especially because the first part of the ffmpeg install command that my instructions inform me to run is

  


  PATH="$HOME/programs/ffmpeg/bin:$PATH" \
PKG_CONFIG_PATH="$HOME/programs/ffmpeg/ffmpeg_build/lib/pkgconfig" \
  ./configure \
    --prefix="$HOME/programs/ffmpeg/ffmpeg_build" \
    --extra-cflags="-I$HOME/programs/ffmpeg/ffmpeg_build/include" \
    --extra-ldflags="-L$HOME/programs/ffmpeg/ffmpeg_build/lib" \
    --bindir="$HOME/programs/ffmpeg/bin" \


  


     ... and on it goes ...

  


  It would seem to me that the .configure script for ffmpeg won't find the x265 executable, since it's not in the bindir.

  


  I'll repeat my two-part question from before :

  


  

  1. How can I change my cmake command so that my x265.exe file ends up in $HOME/programs/ffmpeg/bin with the proper linking, rather than $HOME/programs/ffmpeg/ffmpeg_build/bin ?

  


  


  What I'm looking for here is something akin to the --bindir flag from make's ./confiure.

  


  

  2. Would the build/linker/whatever figure things out for the ffmpeg build ?

  


  


  I want to know the answer to question number 1 regardless of the answer to question number 2. I haven't used cmake with the -DVAR=var flags before, and I'd like to take this opportunity to learn.

  


  ---

  


  Where I've Looked & What I've Tried

  


  I first started with the man page and the --help for cmake. That was scary. I was hoping that I'd find something useful around the CMAKE_INSTALL_PREFIX stuff, but I wasn't sure what to make of it.

  


  I tried greping through cmake --help-full (with 50 lines before and after whatever I was searching for), but got tripped up by the complexity. I've only used basic cmake stuff, before, and I got more than a little lost.

  


  Even with the --help, I don't know if I need to look at the help-manual, the help-command, the help-module, the help-policy, the help-variable, or something else.

  


  It seemed to me, in reading, that a "binary directory" is the top of the "build", whereas I thought it would be the dir named bin ... I couldn't tell what things were meant to be used by the person creating the package rather than by me, who am trying to make/build the package from the command line.

  


  I looked through what seemed to be a cmake wiki's Useful Variables page (archived), as well as at this thread at cmake.org (archived), which, along with this SO source and this and this and this and this SO sources, seemed to suggest using the CMAKE_RUNTIME_OUTPUT_DIRECTORY variable (since the EXECUTABLE_OUTPUT-DIRECTORY variable has been superseded by it). By the way, I couldn't tell which things should be used by the creator of the package vs. the consumer of the package - the consumer being me. I tried with

  


  PATH="$HOME/programs/ffmpeg/bin:$PATH" \
  cmake -G "Unix Makefiles" \
        -DCMAKE_INSTALL_PREFIX="$HOME/programs/ffmpeg/ffmpeg_build" \
        -DCMAKE_RUNTIME_OUTPUT_DIRECTORY="$HOME/programs/ffmpeg/bin" \
        -DENABLE_SHARED=OFF \
        -DCMAKE_EXE_LINKER_FLAGS="-static" 
            ../../source
PATH="$HOME/


  


  and have thought about fifty-or-so other -DVAR variables, but with any I have tried, I still get the same result. I still get the executable in what seems to be the wrong place.

  


  ---

  


  System Details

  


  $ date && date +'%s'
Tue, May  5, 2020 11:14:40 AM
1588698880
$ uname -a
CYGWIN_NT-10.0 MACHINE 3.1.4(0.340/5/3) 2020-02-19 08:49 x86_64 Cygwin
$ cmake --version
cmake version 3.14.5

CMake suite maintained and supported by Kitware (kitware.com/cmake).
$ bash --version | head -n 1
GNU bash, version 4.4.12(3)-release (x86_64-unknown-cygwin)
$ gcc --version | head -n 1
gcc (GCC) 9.3.0
$ g++ --version | head -n 1
g++ (GCC) 9.3.0
$ make --version | head -n 2
GNU Make 4.3
Built for x86_64-pc-cygwin


  


• fftools/resources : Fix double-build by disabling .d file generation

  23 juin, par softworkz

  fftools/resources : Fix double-build by disabling .d file generation
  Signed-off-by : softworkz <softworkz@hotmail.com>
  

  • [DH] ffbuild/common.mak
  • [DH] fftools/Makefile
  • [DH] fftools/resources/Makefile