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improve compiler and architecture detection

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This commit is contained in:
Gael Guennebaud 2011-12-06 19:54:34 +01:00
parent c3ad1f9382
commit 80f8ed9f9c
1 changed files with 34 additions and 16 deletions
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50
cmake/EigenTesting.cmake
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@ -298,23 +298,31 @@ macro(ei_get_compilerver VAR)
if( my_service_pack )
set(${VAR} ${my_service_pack})
else()
set(${VAR} "na")
else()
set(${VAR} "na")
endif()
else()
# on all other system we rely on ${CMAKE_CXX_COMPILER}
# supporting a "--version" flag
exec_program(${CMAKE_CXX_COMPILER}
ARGS --version
OUTPUT_VARIABLE eigen_cxx_compiler_version
)
# here I try to extract the version string
# - TODO: this can most likely be improved and fixed
string(REGEX REPLACE ".* ([0-9])\\.([0-9])\\.([0-9]).*" "\\1.\\2.\\3"
eigen_cxx_compiler_version ${eigen_cxx_compiler_version})
# again, here is room for improvement
# what if the compiler is not "g++" !?
set(${VAR} "g++${eigen_cxx_compiler_version}")
# on all other system we rely on ${CMAKE_CXX_COMPILER}
# supporting a "--version" flag
exec_program( ${CMAKE_CXX_COMPILER}
ARGS --version
OUTPUT_VARIABLE eigen_cxx_compiler_version_raw
)
# first extract the compiler name which is the first word
string( REGEX REPLACE ".*(llvm\\-g\\+\\+|g\\+\\+|icpc|clang).*" "\\1"
eigen_cxx_compiler_name ${eigen_cxx_compiler_version_raw})
if(eigen_cxx_compiler_name MATCHES ".*g\\+\\+.*")
string( REGEX REPLACE ".* ([0-9])\\.([0-9])\\.([0-9]).*" "\\1.\\2.\\3"
eigen_cxx_compiler_version ${eigen_cxx_compiler_version_raw})
elseif(eigen_cxx_compiler_name MATCHES "icpc|clang")
string( REGEX REPLACE ".* ([0-9]*)\\.([0-9]*) .*" "\\1.\\2"
eigen_cxx_compiler_version ${eigen_cxx_compiler_version_raw})
else()
set(eigen_cxx_compiler_version "_")
endif()
set(${VAR} "${eigen_cxx_compiler_name}-${eigen_cxx_compiler_version}")
endif()
endmacro(ei_get_compilerver)
@ -378,7 +386,17 @@ macro(ei_set_build_string)
endmacro(ei_set_build_string)
macro(ei_is_64bit_env VAR)
if(CMAKE_CL_64)
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/is64.cpp"
"int main() { return (sizeof(int*) == 8 ? 1 : 0); }
")
try_run(run_res compile_res
${CMAKE_CURRENT_BINARY_DIR} "${CMAKE_CURRENT_BINARY_DIR}/is64.cpp"
RUN_OUTPUT_VARIABLE run_output)
if(compile_res AND run_res)
set(${VAR} ${run_res})
elseif(CMAKE_CL_64)
set(${VAR} 1)
elseif("$ENV{Platform}" STREQUAL "X64") # nmake 64 bit
set(${VAR} 1)