Here is the code:
find_file(myproject_BUILD_NUMBER_FILE_FOUND myproject_build_number.txt
PATHS ${myproject_SOURCE_DIR})
if(${myproject_BUILD_NUMBER_FILE_FOUND} MATCHES "NOTFOUND")
set(myproject_CURRENT_BUILD_NUM 1)
else()
file(READ ${myproject_SOURCE_DIR}/myproject_build_number.txt
OLD_BUILD_NUM)
if(BUILD_VERSION)
math(EXPR myproject_CURRENT_BUILD_NUM "${OLD_BUILD_NUM} + 1")
file(WRITE ${myproject_SOURCE_DIR}/myproject_build_number.txt
"${myproject_CURRENT_BUILD_NUM}")
else()
set(myproject_CURRENT_BUILD_NUM ${OLD_BUILD_NUM})
endif()
endif()
configure_file(${myproject_SOURCE_DIR}/version/myproject_version.h.in
${myproject_SOURCE_DIR}/version/myproject_version.h @ONLY)
--
BG,
Alexey
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