[x265] How to build the Makefile with cmake for iOS compiling?

Fri Jun 24 05:26:01 CEST 2016

'Your system' means Mac OS X?I'm using Max OS X 10.11.5.
If remove '-DCMAKE_C_FLAGS="$IOS_CFLAGS" -DCMAKE_CXX_FLAGS="$IOS_CFLAGS" -DIOS_PLATFORM_SDK="$IOS_PLATFORM_SDK"' in make-Makefiles.bash, the C comiler check will succeed!
I found that there is '-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk' in the compiling command, is it that cause the problem?

在 2016-06-24 11:10:38，"chen" <chenm003 at 163.com> 写道：

You clang version same as me, but your cmake is lower, and looks your system can't support armv7, are you use ARM64?

At 2016-06-24 11:07:05,"steven.Hu" <huhai8274 at 163.com> wrote:

I've tried your patch, but there is a new problem.When I run 'make-Makefiles.bash' under 'build/arm-ios/' the errors occured:

-- cmake version 3.6.0-rc2

-- The C compiler identification is AppleClang 7.3.0.7030031

-- The CXX compiler identification is AppleClang 7.3.0.7030031

-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang

-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -- broken

CMake Error at /Applications/CMake.app/Contents/share/cmake-3.6/Modules/CMakeTestCCompiler.cmake:61 (message):

  The C compiler

  "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang"

  is not able to compile a simple test program.

  It fails with the following output:

   Change Dir: /Users/huhai/dev/sources/video_opensource/x265_new/x265_dev/build/arm-ios/CMakeFiles/CMakeTmp

  Run Build Command:"/usr/bin/make" "cmTC_83901/fast"

  /Applications/Xcode.app/Contents/Developer/usr/bin/make -f

  CMakeFiles/cmTC_83901.dir/build.make CMakeFiles/cmTC_83901.dir/build

  Building C object CMakeFiles/cmTC_83901.dir/testCCompiler.c.o

  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang

  -arch armv7 -mfpu=neon -pthread -isysroot

  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk

  -miphoneos-version-min=7.0 -Qunused-arguments -isysroot

  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk

  -o CMakeFiles/cmTC_83901.dir/testCCompiler.c.o -c

  /Users/huhai/dev/sources/video_opensource/x265_new/x265_dev/build/arm-ios/CMakeFiles/CMakeTmp/testCCompiler.c

  Linking C executable cmTC_83901

  /Applications/CMake.app/Contents/bin/cmake -E cmake_link_script

  CMakeFiles/cmTC_83901.dir/link.txt --verbose=1

  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang

  -arch armv7 -mfpu=neon -pthread -isysroot

  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk

  -miphoneos-version-min=7.0 -Qunused-arguments -isysroot

  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk

  -Wl,-headerpad_max_install_names

  CMakeFiles/cmTC_83901.dir/testCCompiler.c.o -o cmTC_83901

  ld: warning: ignoring file

  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/lib/libSystem.tbd,

  missing required architecture armv7 in file

  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/lib/libSystem.tbd

  ld: dynamic main executables must link with libSystem.dylib for

  architecture armv7

  clang: error: linker command failed with exit code 1 (use -v to see

  invocation)

  make[1]: *** [cmTC_83901] Error 1

  make: *** [cmTC_83901/fast] Error 2

  CMake will not be able to correctly generate this project.

Call Stack (most recent call first):

  CMakeLists.txt:19 (project)

-- Configuring incomplete, errors occurred!

See also "/Users/huhai/dev/sources/video_opensource/x265_new/x265_dev/build/arm-ios/CMakeFiles/CMakeOutput.log".

See also "/Users/huhai/dev/sources/video_opensource/x265_new/x265_dev/build/arm-ios/CMakeFiles/CMakeError.log".

The C compiler check failed!And I found that it's the '-DCMAKE_C_FLAGS="$IOS_CFLAGS" -DCMAKE_CXX_FLAGS="$IOS_CFLAGS" -DIOS_PLATFORM_SDK="$IOS_PLATFORM_SDK"' cause the problem!
How I can fix it, do you have some ideas?

在 2016-06-24 07:49:20，"huhai" <huhai8274 at 163.com> 写道：

Thank you!Sure,I'll have a try!

发自我的 iPhone

在 2016年6月24日，06:44，chen <chenm003 at 163.com> 写道：

Could you try my new patch?

At 2016-06-23 11:20:02,"steven.Hu" <huhai8274 at 163.com> wrote:

I found 'arm-linux' directory under 'build' directory, and I changed the 'crosscompile.cmake' to the following:

# CMake toolchain file for cross compiling x265 for ARM arch
# This feature is only supported as experimental. Use with caution.
# Please report bugs on bitbucket
# Run cmake with: cmake -DCMAKE_TOOLCHAIN_FILE=crosscompile.cmake -G "Unix Makefiles" ../../source && ccmake ../../source

set(CROSS_COMPILE_ARM 1)
set(CMAKE_SYSTEM_NAME Darwin)
set(CMAKE_SYSTEM_PROCESSOR armv7l)

# specify the cross compiler
set(CMAKE_C_COMPILER /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang)
set(CMAKE_CXX_COMPILER /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++)

# specify the target environment
SET(CMAKE_FIND_ROOT_PATH  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/)

Then I run 'cmake -DCMAKE_TOOLCHAIN_FILE=crosscompile.cmake -G "Unix Makefiles" ../../source && ccmake ../../source' from the arm-linux directory, and I got the'Makefile' without any error info.
But when run 'make', it reported many errors, which may be caused by incorrect headers including.I found the compiler uses the headers under '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk', instead, it should use the headers under '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/'.
How can I fix it? Any suggestion would be appreciated!

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