| 1 |
# GetGitRevision.cmake.in |
| 2 |
|
| 3 |
set(HEAD_DIR "@CMAKE_SOURCE_DIR@") |
| 4 |
set(OUTPUT_FILE "@GIT_REV_HEADER@") |
| 5 |
set(GIT_EXECUTABLE "@GIT_EXECUTABLE@") |
| 6 |
|
| 7 |
if(GIT_EXECUTABLE) |
| 8 |
# Check for dirty repo |
| 9 |
execute_process( |
| 10 |
COMMAND ${GIT_EXECUTABLE} diff-index --quiet HEAD -- |
| 11 |
WORKING_DIRECTORY ${HEAD_DIR} |
| 12 |
RESULT_VARIABLE GIT_DIFF_EXIT_CODE |
| 13 |
ERROR_QUIET |
| 14 |
) |
| 15 |
|
| 16 |
# 0 = Clean, 1 = Dirty |
| 17 |
if(GIT_DIFF_EXIT_CODE EQUAL 0) |
| 18 |
set(HASH_LEN 8) |
| 19 |
set(REV_SUFFIX "") |
| 20 |
else() |
| 21 |
set(HASH_LEN 7) |
| 22 |
set(REV_SUFFIX "+") |
| 23 |
endif() |
| 24 |
|
| 25 |
# Get the hash |
| 26 |
execute_process( |
| 27 |
COMMAND ${GIT_EXECUTABLE} rev-parse --short=${HASH_LEN} HEAD |
| 28 |
WORKING_DIRECTORY ${HEAD_DIR} |
| 29 |
OUTPUT_VARIABLE GIT_REV |
| 30 |
OUTPUT_STRIP_TRAILING_WHITESPACE |
| 31 |
ERROR_QUIET |
| 32 |
) |
| 33 |
if(GIT_REV) |
| 34 |
string(APPEND GIT_REV "${REV_SUFFIX}") |
| 35 |
endif() |
| 36 |
else() |
| 37 |
# If the git package wasn't found |
| 38 |
set(GIT_REV "00000000") |
| 39 |
endif() |
| 40 |
|
| 41 |
# fallback if the git command failed to find a repo or commit hash |
| 42 |
if(NOT GIT_REV) |
| 43 |
set(GIT_REV "00000000") |
| 44 |
endif() |
| 45 |
|
| 46 |
set(GIT_REV_CONTENT "#define GIT_REV \"${GIT_REV}\"\n") |
| 47 |
|
| 48 |
if(EXISTS "${OUTPUT_FILE}") |
| 49 |
file(READ "${OUTPUT_FILE}" OLD_CONTENT) |
| 50 |
else() |
| 51 |
set(OLD_CONTENT "") |
| 52 |
endif() |
| 53 |
|
| 54 |
if(NOT "${GIT_REV_CONTENT}" STREQUAL "${OLD_CONTENT}") |
| 55 |
file(WRITE "${OUTPUT_FILE}" "${GIT_REV_CONTENT}") |
| 56 |
message(STATUS "Git revision updated to: ${GIT_REV}") |
| 57 |
endif() |