diff options
Diffstat (limited to 'Modules/CMakeDetermineCompilerId.cmake')
| -rw-r--r-- | Modules/CMakeDetermineCompilerId.cmake | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Modules/CMakeDetermineCompilerId.cmake b/Modules/CMakeDetermineCompilerId.cmake index b3417d3..f8dab51 100644 --- a/Modules/CMakeDetermineCompilerId.cmake +++ b/Modules/CMakeDetermineCompilerId.cmake @@ -77,6 +77,31 @@ MACRO(CMAKE_DETERMINE_COMPILER_ID lang flagvar src) "Compilation of the ${lang} compiler identification source \"" "${CMAKE_${lang}_COMPILER_ID_SRC}\" produced \"" "${CMAKE_${lang}_COMPILER_ID_EXE}\"\n\n") + + # try to figure out the executable format: ELF, COFF, Mach-O + IF(NOT CMAKE_EXECUTABLE_FORMAT) + FILE(READ ${CMAKE_${lang}_COMPILER_ID_EXE} CMAKE_EXECUTABLE_MAGIC LIMIT 4 HEX) + + # ELF files start with 0x7f"ELF" + IF("${CMAKE_EXECUTABLE_MAGIC}" STREQUAL "7f454c46") + SET(CMAKE_EXECUTABLE_FORMAT "ELF" CACHE STRING "Executable file format") + ENDIF("${CMAKE_EXECUTABLE_MAGIC}" STREQUAL "7f454c46") + +# # COFF (.exe) files start with "MZ" +# IF("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "4d5a....") +# SET(CMAKE_EXECUTABLE_FORMAT "COFF" CACHE STRING "Executable file format") +# ENDIF("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "4d5a....") +# +# # Mach-O files start with CAFEBABE or FEEDFACE, according to http://radio.weblogs.com/0100490/2003/01/28.html +# IF("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "cafebabe") +# SET(CMAKE_EXECUTABLE_FORMAT "MACHO" CACHE STRING "Executable file format") +# ENDIF("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "cafebabe") +# IF("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "feedface") +# SET(CMAKE_EXECUTABLE_FORMAT "MACHO" CACHE STRING "Executable file format") +# ENDIF("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "feedface") + + ENDIF(NOT CMAKE_EXECUTABLE_FORMAT) + # only check if we don't have it yet IF(NOT CMAKE_${lang}_COMPILER_ID) # Read the compiler identification string from the executable file. @@ -108,6 +133,13 @@ MACRO(CMAKE_DETERMINE_COMPILER_ID lang flagvar src) ENDIF(NOT CMAKE_${lang}_COMPILER_ID) ENDFOREACH(CMAKE_${lang}_COMPILER_ID_EXE) + # if the format is unknown after all files have been checked, put "Unknown" in the cache + IF(NOT CMAKE_EXECUTABLE_FORMAT) + SET(CMAKE_EXECUTABLE_FORMAT "Unknown" CACHE STRING "Executable file format") + ELSE(NOT CMAKE_EXECUTABLE_FORMAT) + MESSAGE(STATUS "The executable file format is ${CMAKE_EXECUTABLE_FORMAT}") + ENDIF(NOT CMAKE_EXECUTABLE_FORMAT) + IF(NOT COMPILER_${lang}_PRODUCED_FILES) # No executable was found. FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log |