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cmake: support git info in released tarballs

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1 parent eeffac6 commit eba180a1c786c4a86ead7e46f6e19febef4dd940 @mathstuf mathstuf committed Oct 21, 2014
Showing with 25 additions and 12 deletions.
  1. +1 −1 .gitattributes
  2. +1 −11 CMakeLists.txt
  3. +23 −0 version.cmake
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@@ -1,2 +1,2 @@
.git* export-ignore
-/CMakeLists.txt export-subst
+version.cmake export-subst
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@@ -228,17 +228,7 @@ elseif(NOT MSVC)
set(EXTRA_LIBRARIES ${RT} ${PTHREAD} ${DL})
endif()
-file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/version")
-find_package(Git QUIET)
-if(Git_FOUND OR GIT_FOUND)
- message(STATUS "Found Git: ${GIT_EXECUTABLE}")
- add_custom_target(version ALL "${CMAKE_COMMAND}" "-D" "GIT=${GIT_EXECUTABLE}" "-D" "TO=${CMAKE_BINARY_DIR}/version/version.h" "-P" "src/version.cmake" WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
-else()
- message(STATUS "WARNING: Git was not found!")
- set(VERSIONTAG "unknown")
- configure_file("src/version.h.in" "version/version.h")
- add_custom_target(version ALL)
-endif()
+include(version.cmake)
add_subdirectory(src)
add_subdirectory(tests)
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@@ -0,0 +1,23 @@
+function (write_static_version_header hash)
+ set(VERSIONTAG "${hash}")
+ configure_file("src/version.h.in" "version/version.h")
+ add_custom_target(version ALL)
+endfunction ()
+
+file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/version")
+find_package(Git QUIET)
+if ("$Format:$" STREQUAL "")
+ # We're in a tarball; use hard-coded variables.
+ write_static_version_header("release")
+elseif (GIT_FOUND OR Git_FOUND)
+ message(STATUS "Found Git: ${GIT_EXECUTABLE}")
+ add_custom_target(version ALL
+ COMMAND "${CMAKE_COMMAND}"
+ "-D" "GIT=${GIT_EXECUTABLE}"
+ "-D" "TO=${CMAKE_BINARY_DIR}/version/version.h"
+ "-P" "src/version.cmake"
+ WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
+else()
+ message(STATUS "WARNING: Git was not found!")
+ write_static_version_header("unknown")
+endif ()

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