candleLight_fw/cmake/gitversion.cmake
fenugrec d66fda39f8 Add git version string to USB config descriptor
There was already provisions for this in the code. Tweaked CMake to
generate version.h automatically every build.
2021-04-06 12:03:13 -04:00

53 lines
1.4 KiB
CMake

# source: adapted from
# https://www.mattkeeter.com/blog/2018-01-06-versioning/
find_package(Git)
# quoting in execute_process is fragile... cmake encloses every arg with ' ' , but adding any kind of quoting to
# e.g. add spaces in the format string, will not work easily.
if (Git_FOUND)
execute_process(COMMAND ${GIT_EXECUTABLE} log --pretty=format:fw_%h_%as -n 1
OUTPUT_VARIABLE GIT_REV
ERROR_QUIET
WORKING_DIRECTORY ${SRCDIR}
)
endif()
# Check whether we got any revision (which isn't
# always the case, e.g. when someone downloaded a zip
# file from Github instead of a checkout)
if ("${GIT_REV}" STREQUAL "")
set(GIT_REV "N/A")
set(GIT_DIFF "")
set(GIT_TAG "N/A")
else()
execute_process(
COMMAND ${GIT_EXECUTABLE} diff --quiet --exit-code
RESULT_VARIABLE GIT_DIRTY
WORKING_DIRECTORY ${SRCDIR})
execute_process(
COMMAND git describe --exact-match --tags
OUTPUT_VARIABLE GIT_TAG
ERROR_QUIET
WORKING_DIRECTORY ${SRCDIR})
if (NOT "${GIT_DIRTY}" EQUAL 0)
#append '+' if unclean tree
set(GIT_DIFF "+")
endif()
string(STRIP "${GIT_REV}" GIT_REV)
endif()
set(VERSION "#define GIT_HASH \"${GIT_REV}${GIT_DIFF}\"\n")
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/version.h)
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/version.h VERSION_)
else()
set(VERSION_ "")
endif()
if (NOT "${VERSION}" STREQUAL "${VERSION_}")
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/version.h "${VERSION}")
endif()