cmake: fix PCH generation

[alalek]

process defines from INTERFACE targets

relates #14277 (comment)

[dkurt]

@alalek, With the changes from PR:

cmake -DCMAKE_BUILD_TYPE=RELEASE \
      -DWITH_OPENCL=OFF \
      -DWITH_CUDA=OFF \
      -DBUILD_TESTS=ON \
      -DBUILD_PERF_TESTS=OFF \
      -DWITH_HALIDE=OFF \
      -DWITH_INF_ENGINE=ON \
      -DINF_ENGINE_RELEASE=2018050000 \
      -DENABLE_CXX11=ON \
      -DBUILD_DOCS=OFF \
      -DBUILD_EXAMPLES=OFF \
      -DBUILD_LIST=dnn,python2 ..

error:

Scanning dependencies of target pch_Generate_opencv_core
[ 34%] Generating precomp.hpp
[ 35%] Generating precomp.hpp.gch/opencv_core_RELEASE.gch
/bin/sh: 1: /usr/bin/c++ -O3 -DNDEBUG -DNDEBUG -fPIC -std=c++11 -I"/home/dkurtaev/opencv/build/3rdparty/ippicv/ippicv_lnx/icv/include" -I"/home/dkurtaev/opencv/build/3rdparty/ippicv/ippicv_lnx/iw/include" -I"/home/dkurtaev/opencv/build" -isystem"/usr/include" -isystem"/usr/include" -I"/home/dkurtaev/opencv/build/3rdparty/ippicv/ippicv_lnx/icv/include" -I"/home/dkurtaev/opencv/build/3rdparty/ippicv/ippicv_lnx/iw/include" -I"/home/dkurtaev/opencv/build" -isystem"/usr/include" -isystem"/usr/include" -I"/home/dkurtaev/opencv/modules/core/src" -I"/home/dkurtaev/opencv/modules/core/include" -I"/home/dkurtaev/opencv/build/modules/core" -I"/home/dkurtaev/opencv/modules/core/include" -isystem"/usr/include" -I"/home/dkurtaev/opencv/modules/core/src" -I"/home/dkurtaev/opencv/modules/core/include" -I"/home/dkurtaev/opencv/build/modules/core" -I"/home/dkurtaev/opencv/3rdparty/ittnotify/include" -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -I"/home/dkurtaev/opencv/modules/core/src" -DCVAPI_EXPORTS -fPIC -x c++-header -o /home/dkurtaev/opencv/build/modules/core/precomp.hpp.gch/opencv_core_RELEASE.gch /home/dkurtaev/opencv/build/modules/core/precomp.hpp: not found
modules/core/CMakeFiles/pch_Generate_opencv_core.dir/build.make:64: recipe for target 'modules/core/precomp.hpp.gch/opencv_core_RELEASE.gch' failed
make[2]: *** [modules/core/precomp.hpp.gch/opencv_core_RELEASE.gch] Error 127
CMakeFiles/Makefile2:1677: recipe for target 'modules/core/CMakeFiles/pch_Generate_opencv_core.dir/all' failed
make[1]: *** [modules/core/CMakeFiles/pch_Generate_opencv_core.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

[alalek]

@dkurt It doesn't look like expected command line.

• What is CMake's version?
• ls -l /usr/bin/c++
• ls -l /bin/sh
• touch <opencv_path>/modules/core/src/precomp.hpp; VERBOSE=1 make

Expected output of VERBOSE=1 make should be like this:

[ 6%] Generating precomp.hpp
cd /home/alalek/projects/opencv/build/opencv/modules/core && /usr/bin/cmake -E copy_if_different /home/alalek/projects/opencv/dev/modules/core/src/precomp.hpp /home/alalek/projects/opencv/build/opencv/modules/core/precomp.hpp
[ 6%] Generating precomp.hpp.gch/opencv_core_Release.gch
cd /home/alalek/projects/opencv/build/opencv/modules/core && /usr/bin/cmake -E make_directory /home/alalek/projects/opencv/build/opencv/modules/core/precomp.hpp.gch
cd /home/alalek/projects/opencv/build/opencv/modules/core && chmod +x /home/alalek/projects/opencv/build/opencv/modules/core/precomp.hpp.command.sh
cd /home/alalek/projects/opencv/build/opencv/modules/core && ./precomp.hpp.command.sh
/usr/bin/c++ -O2 -DNDEBUG -DNDEBUG -fPIC -I"/home/alalek/projects/opencv/build/opencv/3rdparty/ippicv/ippicv_lnx/icv/include" -I"/home/alalek/projects/opencv/build/opencv/3rdparty/ippicv/ippicv_lnx/iw/include" -isystem"/home/alalek/projects/opencv/build/opencv" -isystem"/usr/include/eigen3" -isystem"/usr/include/openblas" -I"/home/alalek/projects/opencv/build/opencv/3rdparty/ippicv/ippicv_lnx/icv/include" -I"/home/alalek/projects/opencv/build/opencv/3rdparty/ippicv/ippicv_lnx/iw/include" -isystem"/home/alalek/projects/opencv/build/opencv" -isystem"/usr/include/eigen3" -isystem"/usr/include/openblas" -I"/home/alalek/projects/opencv/dev/modules/core/src" -I"/home/alalek/projects/opencv/dev/modules/core/include" -I"/home/alalek/projects/opencv/build/opencv/modules/core" -I"/home/alalek/projects/opencv/dev/modules/core/include" -I"/home/alalek/projects/opencv/dev/3rdparty/include/opencl/1.2" -I"/home/alalek/projects/opencv/dev/modules/core/src" -I"/home/alalek/projects/opencv/dev/modules/core/include" -I"/home/alalek/projects/opencv/build/opencv/modules/core" -I"/home/alalek/projects/opencv/dev/3rdparty/ittnotify/include" -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -I"/home/alalek/projects/opencv/dev/modules/core/src" -DCVAPI_EXPORTS -fPIC -x c++-header -o /home/alalek/projects/opencv/build/opencv/modules/core/precomp.hpp.gch/opencv_core_Release.gch /home/alalek/projects/opencv/build/opencv/modules/core/precomp.hpp -D__OPENCV_BUILD=1 -D_USE_MATH_DEFINES -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_FORMAT_MACROS -DOPENCV_WITH_ITT=1

[dkurt]

Tried it one more time. Works fine, thank you!