set(${sys_var} ${target_sys} PARENT_SCOPE)
endfunction(get_arch_and_system_from_triple)
-# Query the default target triple of the compiler.
-set(target_triple_option "-print-target-triple")
-if(CMAKE_COMPILER_IS_GNUCXX)
- # GCC does not support the "-print-target-triple" option but supports
- # "-print-multiarch" which clang does not support for all targets.
- set(target_triple_option "-print-multiarch")
+execute_process(COMMAND ${CMAKE_CXX_COMPILER} -v
+ RESULT_VARIABLE libc_compiler_info_result
+ OUTPUT_VARIABLE libc_compiler_info
+ ERROR_VARIABLE libc_compiler_info)
+if(NOT (libc_compiler_info_result EQUAL "0"))
+ message(FATAL_ERROR "libc build: error querying compiler info from the "
+ "compiler: ${libc_compiler_info}")
endif()
-execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${target_triple_option}
- RESULT_VARIABLE libc_compiler_triple_check
- OUTPUT_VARIABLE libc_compiler_triple)
-if(NOT (libc_compiler_triple_check EQUAL "0"))
- message(FATAL_ERROR "libc build: error querying target triple from the "
- "compiler: ${libc_compiler_triple}")
+string(REGEX MATCH "Target: [-_a-z0-9]+[ \r\n]+"
+ libc_compiler_target_info ${libc_compiler_info})
+if(NOT libc_compiler_target_info)
+ message(FATAL_ERROR "libc build: could not read compiler target info from:\n"
+ "${libc_compiler_info}")
endif()
+string(STRIP ${libc_compiler_target_info} libc_compiler_target_info)
+string(SUBSTRING ${libc_compiler_target_info} 8 -1 libc_compiler_triple)
get_arch_and_system_from_triple(${libc_compiler_triple}
compiler_arch compiler_sys)
if(NOT compiler_arch)