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cmake: add DEBUG_PRE/DEBUG_POST commands handling

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Useful for debug purposes:
    cmake -DDEBUG_POST="ocv_cmake_dump_vars(CUDA)" .
    cmake -DCMAKE_PRE="ocv_cmake_dump_vars(\"OPENCL|opencl\")" .
This commit is contained in:
Alexander Alekhin 2016-01-15 14:03:48 +03:00
parent 9d4ee2f54d
commit 9cd6731894
2 changed files with 14 additions and 0 deletions
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3
CMakeLists.txt
View File

@ -98,6 +98,8 @@ endif()
include(cmake/OpenCVUtils.cmake)
ocv_cmake_eval(DEBUG_PRE ONCE)
ocv_clear_vars(OpenCVModules_TARGETS)
# ----------------------------------------------------------------------------
@ -1258,3 +1260,4 @@ include(cmake/OpenCVPackaging.cmake)
# This should be the last command
ocv_cmake_dump_vars("" TOFILE "CMakeVars.txt")
ocv_cmake_eval(DEBUG_POST ONCE)

11
cmake/OpenCVUtils.cmake
View File

@ -1,3 +1,5 @@
include(CMakeParseArguments)
# Debugging function
function(ocv_cmake_dump_vars)
cmake_parse_arguments(DUMP "" "TOFILE" "" ${ARGN})
@ -16,6 +18,15 @@ function(ocv_cmake_dump_vars)
endif()
endfunction()
function(ocv_cmake_eval var_name)
if(DEFINED ${var_name})
file(WRITE "${CMAKE_BINARY_DIR}/CMakeCommand-${var_name}.cmake" ${${var_name}})
include("${CMAKE_BINARY_DIR}/CMakeCommand-${var_name}.cmake")
endif()
if(";${ARGN};" MATCHES ";ONCE;")
unset(${var_name} CACHE)
endif()
endfunction()
# Search packages for host system instead of packages for target system
# in case of cross compilation thess macro should be defined by toolchain file