blob: bd174472a0da6f0aecc920e7f6bcf15466781ec8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
set(CURRENT_LIST_DIR ${CMAKE_CURRENT_LIST_DIR})
if (NOT DEFINED pre_configure_dir)
set(pre_configure_dir ${CMAKE_CURRENT_LIST_DIR})
endif ()
if (NOT DEFINED post_configure_dir)
set(post_configure_dir ${CMAKE_BINARY_DIR}/include)
endif ()
set(pre_configure_file ${pre_configure_dir}/git_version.hpp.in)
set(post_configure_file ${post_configure_dir}/git_version.hpp)
function(CheckGitWrite git_hash)
file(WRITE ${CMAKE_BINARY_DIR}/git-state.txt ${git_hash})
endfunction()
function(CheckGitRead git_hash)
if (EXISTS ${CMAKE_BINARY_DIR}/git-state.txt)
file(STRINGS ${CMAKE_BINARY_DIR}/git-state.txt CONTENT)
LIST(GET CONTENT 0 var)
set(${git_hash} ${var} PARENT_SCOPE)
endif ()
endfunction()
function(CheckGitVersion git_hash)
# Get the latest abbreviated commit hash of the working branch
execute_process(
COMMAND git log -1 --format=%H
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
OUTPUT_VARIABLE GIT_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE
)
CheckGitRead(GIT_HASH_CACHE)
if (NOT EXISTS ${post_configure_dir})
file(MAKE_DIRECTORY ${post_configure_dir})
endif ()
# if (NOT EXISTS ${post_configure_dir}/git_version.h)
# file(COPY ${pre_configure_dir}/git_version.h DESTINATION ${post_configure_dir})
# endif()
if (NOT DEFINED GIT_HASH_CACHE)
set(GIT_HASH_CACHE "INVALID")
endif ()
# Only update the git_version.cpp if the hash has changed. This will
# prevent us from rebuilding the project more than we need to.
if (NOT ${GIT_HASH} STREQUAL ${GIT_HASH_CACHE} OR NOT EXISTS ${post_configure_file})
# Set che GIT_HASH_CACHE variable the next build won't have
# to regenerate the source file.
CheckGitWrite(${GIT_HASH})
configure_file(${pre_configure_file} ${post_configure_file} @ONLY)
endif ()
set(${git_hash} ${GIT_HASH} PARENT_SCOPE)
endfunction()
function(CheckGitSetup top_git_hash)
add_custom_target(AlwaysCheckGit COMMAND ${CMAKE_COMMAND}
-DRUN_CHECK_GIT_VERSION=1
-Dpre_configure_dir=${pre_configure_dir}
-Dpost_configure_file=${post_configure_dir}
-DGIT_HASH_CACHE=${GIT_HASH_CACHE}
-P ${CURRENT_LIST_DIR}/CheckGit.cmake
BYPRODUCTS ${post_configure_file}
)
add_library(git_version INTERFACE ${CMAKE_BINARY_DIR}/include/git_version.hpp)
add_dependencies(git_version AlwaysCheckGit)
CheckGitVersion(git_hash)
set(${top_git_hash} ${git_hash} PARENT_SCOPE)
endfunction()
# This is used to run this function from an external cmake process.
if (RUN_CHECK_GIT_VERSION)
CheckGitVersion(git_hash)
set(${GIT_HASH} ${git_hash})
endif ()
|
