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Merge pull request #180 from rolk/180_compver

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Diagnose compiler version in configuration output
This commit is contained in:
Bård Skaflestad 2013-03-07 04:14:15 -08:00
commit 316c691c81
2 changed files with 36 additions and 0 deletions
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4
CMakeLists.txt
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@ -63,6 +63,10 @@ system_info ()
include (UseVCSInfo) include (UseVCSInfo)
vcs_info () vcs_info ()
# print toolchain information to identify compilers with potential bugs
include (UseCompVer)
compiler_info ()
# include special # include special
if (CMAKE_VERSION VERSION_LESS "2.8.7") if (CMAKE_VERSION VERSION_LESS "2.8.7")
message (STATUS "Enabling backward compatibility modules for CMake ${CMAKE_VERSION}") message (STATUS "Enabling backward compatibility modules for CMake ${CMAKE_VERSION}")

32
cmake/Modules/UseCompVer.cmake
View File

@ -13,3 +13,35 @@ function (get_gcc_version language ver_name)
set (${ver_name} "" PARENT_SCOPE) set (${ver_name} "" PARENT_SCOPE)
endif (CMAKE_${language}_COMPILER_ID STREQUAL GNU) endif (CMAKE_${language}_COMPILER_ID STREQUAL GNU)
endfunction (get_gcc_version ver_name) endfunction (get_gcc_version ver_name)
# less reliable, but includes the patch number
function (get_gcc_patch language ver_name)
if(CMAKE_${language}_COMPILER_ID STREQUAL GNU)
# exec_program is deprecated, but execute_process does't work :-(
exec_program (${CMAKE_${language}_COMPILER}
ARGS ${CMAKE_${language}_COMPILER_ARG1} --version
OUTPUT_VARIABLE _version
)
# split multi-line string into list
if (WIN32)
string (REPLACE "\r\n" ";" _version "${_version}")
else (WIN32)
string (REPLACE "\n" ";" _version "${_version}")
endif (WIN32)
# only keep first line
list (GET _version 0 _version)
# extract version number from it (this is the fragile part)
string (REGEX REPLACE "^[^\\(]+(\\([^\\)]*\\))?[\ \t]*([0-9]+\\.[0-9]+\\.[0-9]+)(.*\\(.*\\))?" "\\2" _version "${_version}")
# return this to the caller
set (${ver_name} ${_version} PARENT_SCOPE)
else (CMAKE_${language}_COMPILER_ID STREQUAL GNU)
set (${ver_name} "" PARENT_SCOPE)
endif (CMAKE_${language}_COMPILER_ID STREQUAL GNU)
endfunction (get_gcc_patch language ver_name)
function (compiler_info)
if (CMAKE_COMPILER_IS_GNUCXX)
get_gcc_patch (CXX version)
message (STATUS "GNU C++ compiler version: ${version}")
endif (CMAKE_COMPILER_IS_GNUCXX)
endfunction (compiler_info)