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| author | Rolf Eike Beer <eike@sf-mail.de> | 2012-02-24 17:48:02 +0100 |
|---|---|---|
| committer | Rolf Eike Beer <eike@sf-mail.de> | 2012-02-24 17:48:02 +0100 |
| commit | c28e2769482c12da53a3c01ea45f9ae6cdc1de34 (patch) | |
| tree | dd3c7f3c06bd655c1f685241204ad217f1f2d087 /Modules/GenerateExportHeader.cmake | |
| parent | 4412fc0890ab4081432721b7578f9893f89406fd (diff) | |
| download | cmake-c28e2769482c12da53a3c01ea45f9ae6cdc1de34.tar.gz | |
GenerateExportHeader: improve compiler identification
Use CMAKE_<LANG>_COMPILER_VERSION instead of calling the compiler. This macro
predates those useful variables. This also fixes the issue that g++ version
detection was not working if C language was not enabled.
Diffstat (limited to 'Modules/GenerateExportHeader.cmake')
| -rw-r--r-- | Modules/GenerateExportHeader.cmake | 37 |
1 files changed, 9 insertions, 28 deletions
diff --git a/Modules/GenerateExportHeader.cmake b/Modules/GenerateExportHeader.cmake index e1dcb51643..51ba6fc518 100644 --- a/Modules/GenerateExportHeader.cmake +++ b/Modules/GenerateExportHeader.cmake @@ -154,34 +154,15 @@ endmacro() macro(_test_compiler_hidden_visibility) - if(CMAKE_COMPILER_IS_GNUCXX) - exec_program(${CMAKE_C_COMPILER} ARGS --version - OUTPUT_VARIABLE _gcc_version_info) - string(REGEX MATCH "[345]\\.[0-9]\\.[0-9]" - _gcc_version "${_gcc_version_info}") - # gcc on mac just reports: "gcc (GCC) 3.3 20030304 ..." without the - # patch level, handle this here: - if(NOT _gcc_version) - string(REGEX REPLACE ".*\\(GCC\\).* ([34]\\.[0-9]) .*" "\\1.0" - _gcc_version "${_gcc_version_info}") - endif() - - if("${_gcc_version}" VERSION_LESS "4.2") - set(GCC_TOO_OLD TRUE) - message(WARNING "GCC version older than 4.2") - endif() - endif() - - if(CMAKE_CXX_COMPILER_ID MATCHES Intel) - exec_program(${CMAKE_CXX_COMPILER} ARGS -V - OUTPUT_VARIABLE _intel_version_info) - string(REGEX REPLACE ".*Version ([0-9]+(\\.[0-9]+)+).*" "\\1" - _intel_version "${_intel_version_info}") - - if(${_intel_version} VERSION_LESS "12.0") - set(_INTEL_TOO_OLD TRUE) - message(WARNING "Intel compiler older than 12.0") - endif() + if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.2") + set(GCC_TOO_OLD TRUE) + message(WARNING "GCC version older than 4.2") + elseif(CMAKE_COMPILER_IS_GNUC AND CMAKE_C_COMPILER_VERSION VERSION_LESS "4.2") + set(GCC_TOO_OLD TRUE) + message(WARNING "GCC version older than 4.2") + elseif(CMAKE_CXX_COMPILER_ID MATCHES Intel AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "12.0") + set(_INTEL_TOO_OLD TRUE) + message(WARNING "Intel compiler older than 12.0") endif() |