diff options
| author |  Gael Guennebaud <g.gael@free.fr> | 2013-06-18 17:25:37 +0200 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2013-06-18 17:25:37 +0200 |
| commit | eef8d981398137e242decb3073289d0fb7725451 (patch) | |
| tree | 823703f6f95a0b16f4818ab5d1b1529930f9bf87 /cmake | |
| parent | 4e6d746514d3b7ef31cf4cd1ac5b48eb0e3cbe9e (diff) | |
Fix bug #542: fix detection of compiler version on systems without the head command.
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/EigenTesting.cmake | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/cmake/EigenTesting.cmake b/cmake/EigenTesting.cmake index 3780888af..d9e22ab1a 100644 --- a/cmake/EigenTesting.cmake +++ b/cmake/EigenTesting.cmake @@ -322,13 +322,21 @@ macro(ei_get_compilerver VAR) endif() else() # on all other system we rely on ${CMAKE_CXX_COMPILER} - # supporting a "--version" flag - execute_process(COMMAND ${CMAKE_CXX_COMPILER} --version - COMMAND head -n 1 - OUTPUT_VARIABLE eigen_cxx_compiler_version_string OUTPUT_STRIP_TRAILING_WHITESPACE) + # supporting a "--version" flag - ei_get_compilerver_from_cxx_version_string(${eigen_cxx_compiler_version_string} CNAME CVER) + # check whether the head command exists + find_program(HEAD_EXE head NO_CMAKE_ENVIRONMENT_PATH NO_CMAKE_PATH NO_CMAKE_SYSTEM_PATH) + if(HEAD_EXE) + execute_process(COMMAND ${CMAKE_CXX_COMPILER} --version + COMMAND head -n 1 + OUTPUT_VARIABLE eigen_cxx_compiler_version_string OUTPUT_STRIP_TRAILING_WHITESPACE) + else() + execute_process(COMMAND ${CMAKE_CXX_COMPILER} --version + OUTPUT_VARIABLE eigen_cxx_compiler_version_string OUTPUT_STRIP_TRAILING_WHITESPACE) + string(REGEX REPLACE "[\n\r].*" "" eigen_cxx_compiler_version_string ${eigen_cxx_compiler_version_string}) + endif() + ei_get_compilerver_from_cxx_version_string("${eigen_cxx_compiler_version_string}" CNAME CVER) set(${VAR} "${CNAME}-${CVER}") endif() endmacro(ei_get_compilerver) |