CrucibleCheck.cmake
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include_guard(GLOBAL)
include(CheckCXXSourceCompiles)
function(crucible_check_platform_is_64_bit)
message(STATUS "Checking if target system is 64-bit...")
set(CMAKE_REQUIRED_QUIET TRUE)
check_cxx_source_compiles(
"
#include <climits>
static_assert(sizeof(void *) == 8);
static_assert(CHAR_BIT == 8);
int main() { return 0; }
"
CRUCIBLE_PLATFORM_IS_64_BIT)
if(CRUCIBLE_PLATFORM_IS_64_BIT)
message(STATUS " Yes!")
else()
message(FATAL_ERROR "Crucible only supports 64-bit targets")
endif()
endfunction()
function(crucible_check_platform_is_posix_like)
message(STATUS "Checking if target system is POSIX-like...")
if(UNIX)
set(CRUCIBLE_PLATFORM_IS_POSIX_LIKE TRUE CACHE INTERNAL "")
message(STATUS " Yes!")
else()
message(STATUS " No!")
endif()
endfunction()
function(crucible_check_platform_is_windows_like)
message(STATUS "Checking if target system is Windows-like...")
if(WIN32)
set(CRUCIBLE_PLATFORM_IS_WINDOWS_LIKE TRUE CACHE INTERNAL "")
message(STATUS " Yes!")
else()
message(STATUS " No!")
endif()
endfunction()
function(crucible_check_platform_has_dirent_d_namlen)
message(STATUS "Checking if target system has `struct dirent::d_namlen`...")
set(CMAKE_REQUIRED_QUIET TRUE)
check_cxx_source_compiles(
"
#include <dirent.h>
int main()
{
struct ::dirent entry;
entry.d_namlen = 0;
return 0;
}
"
CRUCIBLE_PLATFORM_HAS_DIRENT_D_NAMLEN)
if(CRUCIBLE_PLATFORM_HAS_DIRENT_D_NAMLEN)
message(STATUS " Yes!")
else()
message(STATUS " No!")
endif()
endfunction()
function(crucible_check_platform_path_separator)
message(STATUS "Checking platform native path separator...")
# Might break, but CMake has no other way to get this information
file(TO_NATIVE_PATH "/" PLATFORM_PATH_SEPARATOR)
# Double-escape because if it's `\`, the C++ compiler will _also_ parse it as an escape sequence
string(REPLACE "\\" "\\\\" PLATFORM_PATH_SEPARATOR_ESCAPED "${PLATFORM_PATH_SEPARATOR}")
set(CRUCIBLE_PLATFORM_PATH_SEPARATOR "${PLATFORM_PATH_SEPARATOR_ESCAPED}" CACHE INTERNAL "")
message(STATUS " ${CRUCIBLE_PLATFORM_PATH_SEPARATOR}")
endfunction()