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[CMake] Update GetSVN.cmake to use LLVM version control helper scripts.

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This allows the logic to work with Git, and also uses the variable names
to match what Clang is actually looking for.

This changes the interface of GetSVN.cmake. Clang change to follow.

llvm-svn: 190556
This commit is contained in:
Jordan Rose 2013-09-11 22:46:41 +00:00
parent 25dd42b1f8
commit 9820575674
1 changed files with 34 additions and 17 deletions
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51
cmake/modules/GetSVN.cmake
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@ -2,24 +2,41 @@
#
# Input variables:
# FIRST_SOURCE_DIR - First source directory
# FIRST_REPOSITORY - The macro to define to the first revision number.
# SECOND_SOURCE_DIR - Second source directory
# SECOND_REPOSITORY - The macro to define to the second revision number.
# FIRST_NAME - The macro prefix for the first repository's info
# SECOND_SOURCE_DIR - Second source directory (opt)
# SECOND_NAME - The macro prefix for the second repository's info (opt)
# HEADER_FILE - The header file to write
include(FindSubversion)
if (Subversion_FOUND AND EXISTS "${FIRST_SOURCE_DIR}/.svn")
# Repository information for the first repository.
Subversion_WC_INFO(${FIRST_SOURCE_DIR} MY)
file(WRITE ${HEADER_FILE}.txt "#define ${FIRST_REPOSITORY} \"${MY_WC_REVISION}\"\n")
#
# The output header will contain macros FIRST_REPOSITORY and FIRST_REVISION,
# and SECOND_REPOSITORY and SECOND_REVISION if requested, where "FIRST" and
# "SECOND" are substituted with the names specified in the input variables.
# Repository information for the second repository.
if (EXISTS "${SECOND_SOURCE_DIR}/.svn")
Subversion_WC_INFO(${SECOND_SOURCE_DIR} MY)
file(APPEND ${HEADER_FILE}.txt
"#define ${SECOND_REPOSITORY} \"${MY_WC_REVISION}\"\n")
endif ()
# Chop off cmake/modules/GetSVN.cmake
get_filename_component(LLVM_DIR "${CMAKE_SCRIPT_MODE_FILE}" PATH)
get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH)
get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH)
# Copy the file only if it has changed.
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
${HEADER_FILE}.txt ${HEADER_FILE})
function(append_info name path)
execute_process(COMMAND "${LLVM_DIR}/utils/GetSourceVersion" "${path}"
OUTPUT_VARIABLE revision)
string(STRIP "${revision}" revision)
execute_process(COMMAND "${LLVM_DIR}/utils/GetRepositoryPath" "${path}"
OUTPUT_VARIABLE repository
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(STRIP "${repository}" repository)
file(APPEND "${HEADER_FILE}.txt"
"#define ${name}_REVISION \"${revision}\"\n")
file(APPEND "${HEADER_FILE}.txt"
"#define ${name}_REPOSITORY \"${repository}\"\n")
endfunction()
append_info(${FIRST_NAME} "${FIRST_SOURCE_DIR}")
if(DEFINED SECOND_SOURCE_DIR)
append_info(${SECOND_NAME} "${SECOND_SOURCE_DIR}")
endif()
# Copy the file only if it has changed.
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
"${HEADER_FILE}.txt" "${HEADER_FILE}")
file(REMOVE "${HEADER_FILE}.txt")