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# Get commit hash
execute_process(COMMAND git log --format='%H' -n 1
OUTPUT_VARIABLE GIT_COMMIT_HASH
ERROR_QUIET)
# Check whether we got any revision (which isn't always the case, e.g. when
# someone downloaded a zip file instead of a checkout)
if ("${GIT_COMMIT_HASH}" STREQUAL "")
set(GIT_BRANCH "N/A")
set(GIT_COMMITS "")
set(GIT_COMMIT_HASH "N/A")
set(GIT_COMMIT_SHORT "N/A")
set(GIT_DIFF "")
set(GIT_TAG "N/A")
else()
execute_process(COMMAND
bash -c "git diff --quiet --exit-code || echo +"
OUTPUT_VARIABLE GIT_DIFF)
execute_process(COMMAND
bash -c "git describe --always --tags |cut -f1 -d'-'"
OUTPUT_VARIABLE GIT_TAG ERROR_QUIET)
execute_process(COMMAND
bash -c "git describe --always --tags |cut -f2 -d'-'"
OUTPUT_VARIABLE GIT_COMMITS ERROR_QUIET)
execute_process(COMMAND
git rev-parse --abbrev-ref HEAD
OUTPUT_VARIABLE GIT_BRANCH)
string(STRIP "${GIT_COMMIT_HASH}" GIT_COMMIT_HASH)
string(SUBSTRING "${GIT_COMMIT_HASH}" 1 7 GIT_COMMIT_SHORT)
string(STRIP "${GIT_BRANCH}" GIT_BRANCH)
string(STRIP "${GIT_COMMITS}" GIT_COMMITS)
string(STRIP "${GIT_DIFF}" GIT_DIFF)
string(STRIP "${GIT_TAG}" GIT_TAG)
endif()
set(VERSION "const char* GIT_BRANCH=\"${GIT_BRANCH}\";
const char* GIT_COMMIT=\"${GIT_COMMIT_SHORT}\";
const char* GIT_COMMITS=\"${GIT_COMMITS}\";
const char* GIT_TAG=\"${GIT_TAG}\";
const char* VERSION=\"${GIT_TAG}-r${GIT_COMMITS}-g${GIT_COMMIT_SHORT}${GIT_DIFF}\";
")
message(DEBUG "Generated Version: \"${VERSION}\"")
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_SOURCE_DIR}/version.h" "${VERSION}")
endif()
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