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Implements macro get_version_from_n_defines inside PreprocessorUtils

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This commit is contained in:
Roman Proskuryakov 2016-05-09 19:34:17 +03:00
parent a6b67154bb
commit 16fbce91c2
1 changed files with 32 additions and 7 deletions
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39
cmake/PreprocessorUtils.cmake
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@ -36,9 +36,9 @@ endmacro()
macro(replace_preprocessor_entry VARIABLE KEYWORD NEW_VALUE)
string(REGEX REPLACE
"(// *)?# *define +${KEYWORD} +[^ \n]*"
"#define ${KEYWORD} ${NEW_VALUE}"
${VARIABLE}_TEMP
${${VARIABLE}}
"#define ${KEYWORD} ${NEW_VALUE}"
${VARIABLE}_TEMP
${${VARIABLE}}
)
set(${VARIABLE} ${${VARIABLE}_TEMP})
endmacro()
@ -51,10 +51,35 @@ macro(set_preprocessor_entry VARIABLE KEYWORD ENABLE)
endif ()
string(REGEX REPLACE
"(// *)?# *define +${KEYWORD} *\n"
${TMP_REPLACE_STR}
${VARIABLE}_TEMP
${${VARIABLE}}
${TMP_REPLACE_STR}
${VARIABLE}_TEMP
${${VARIABLE}}
)
set(${VARIABLE} ${${VARIABLE}_TEMP})
endmacro()
# get_version_from_n_defines(result_version_name header_path [list of defines...])
#
# get_version_from_n_defines(MyPackage_VERSION /Header/Path/HeaderName.h
# MYPACKAGE_VERSION_MAJOR
# MYPACKAGE_VERSION_MINOR
# )
# Function call will get the values of defines MYPACKAGE_VERSION_MAJOR & MYPACKAGE_VERSION_MINOR
# from header and set "${MYPACKAGE_VERSION_MAJOR}.${MYPACKAGE_VERSION_MINOR}" into MyPackage_VERSION
#
function(get_version_from_n_defines OUT_VAR HEADER_PATH)
if (NOT EXISTS ${HEADER_PATH})
message(FATAL_ERROR "Unable to find '${HEADER_PATH}'")
return()
endif ()
file(READ ${HEADER_PATH} _CONTENT)
unset(_DEFINES_LIST)
foreach (_DEFINE_NAME ${ARGN})
get_preprocessor_entry(_CONTENT ${_DEFINE_NAME} _DEFINE_VALUE)
list(APPEND _DEFINES_LIST ${_DEFINE_VALUE})
endforeach()
string(REPLACE ";" "." _VERSION "${_DEFINES_LIST}")
set(${OUT_VAR} "${_VERSION}" PARENT_SCOPE)
endfunction()