[CMake] nasm and TRY_COMPILE problem

[Prakash Punnoor]

Am Donnerstag Februar 23 2006 16:40 schrieb William A. Hoffman:
> At 10:43 AM 2/23/2006, Prakash Punnoor wrote:
> >Now another question: nasm cannot link code, so what should I write into
> >CMAKE_ASM_LINK_EXECUTABLE? It should use the default c/c++/whatever
> > linker.
>
> It should run the link command directly.

Sorry, I don't understand what I should do to correct it.
>
> >Why does TRY_COMPILE not only compile but also try to link the code?
> > Actually compilng only would be enough to run most tests and would also
> > be a bit faster if you avoid linking.
>
> Sometimes that is the only way to make sure something actually compiles and
> works.

Yes, but therefore we should better have a seperate command like 
TRAY_COMPILE_AND_LINK or whatever.

> >This is now a major problem for me. I really don't want to work-around all
> >this troubles....
>
> You would have to post your files so that someone might be able to debug
> them.

Well, there was a link in the first post...but well, these are my current 
files:

cat CMakeASMCompiler.cmake.in

SET(CMAKE_ASM_COMPILER "@CMAKE_ASM_COMPILER@")
SET(CMAKE_ASM_COMPILER_ARG1 "@CMAKE_ASM_COMPILER_ARG1@")
SET(CMAKE_ASM_COMPILER_LOADED 1)

SET(CMAKE_ASM_SOURCE_FILE_EXTENSIONS nasm;asm;nas)
SET(CMAKE_ASM_IGNORE_EXTENSIONS h;H;o;O;obj;OBJ;def;DEF;rc;RC)
#SET(CMAKE_ASM_LINKER_PREFERENCE None)
IF(UNIX)
  SET(CMAKE_ASM_OUTPUT_EXTENSION .o)
ELSE(UNIX)
  SET(CMAKE_ASM_OUTPUT_EXTENSION .obj)
ENDIF(UNIX)

SET(CMAKE_ASM_COMPILER_ENV_VAR "ASM_COMPILER")



cat CMakeASMInformation.cmake

GET_FILENAME_COMPONENT(CMAKE_BASE_NAME ${CMAKE_ASM_COMPILER} NAME_WE)
INCLUDE(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME} OPTIONAL)

SET (CMAKE_ASM_FLAGS "$ENV{ASMFLAGS} ${CMAKE_ASM_FLAGS_INIT}" CACHE STRING
     "Flags for ASM compiler.")

SET(CMAKE_INCLUDE_FLAG_ASM "-I")

IF(NOT CMAKE_ASM_COMPILE_OBJECT)
  IF(UNIX)
    SET(CMAKE_ASM_COMPILE_OBJECT
       "<CMAKE_ASM_COMPILER> -f elf <FLAGS> -o <OBJECT> <SOURCE>")
  ELSE(UNIX)
    SET(CMAKE_ASM_COMPILE_OBJECT
       "<CMAKE_ASM_COMPILER> -f win32 -DWIN32 <FLAGS> -o <OBJECT> <SOURCE>")
  ENDIF(UNIX)
ENDIF(NOT CMAKE_ASM_COMPILE_OBJECT)

IF(NOT CMAKE_ASM_LINK_EXECUTABLE)
  IF(UNIX)
    SET(CMAKE_ASM_LINK_EXECUTABLE
       "<CMAKE_ASM_COMPILER> -f elf <FLAGS> -o <OBJECT> <SOURCE>")
  ELSE(UNIX)
    SET(CMAKE_ASM_LINK_EXECUTABLE
       "<CMAKE_ASM_COMPILER> -f win32 -DWIN32 <FLAGS> -o <OBJECT> <SOURCE>")
  ENDIF(UNIX)
ENDIF(NOT CMAKE_ASM_LINK_EXECUTABLE)

MARK_AS_ADVANCED(
CMAKE_ASM_FLAGS
)

SET(CMAKE_ASM_INFOMATION_LOADED 1)



cat CMakeDetermineASMCompiler.cmake

IF(NOT CMAKE_ASM_COMPILER)
  FIND_PROGRAM(CMAKE_ASM_COMPILER NAMES nasm)
ENDIF(NOT CMAKE_ASM_COMPILER)
MARK_AS_ADVANCED(CMAKE_ASM_COMPILER)


# configure variables set in this file for fast reload later on
CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/admin/CMakeModules/CMakeASMCompiler.cmake.in
               ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeASMCompiler.cmake 
IMMEDIATE)

SET(CMAKE_ASM_COMPILER_ENV_VAR "ASM_COMPILER")



cat CMakeTestASMCompiler.cmake

# This file is used by EnableLanguage in cmGlobalGenerator to
# determine that that selected ASM compiler can actually compile
# and link the most basic of programs.   If not, a fatal error
# is set and cmake stops processing commands and will not generate
# any makefiles or projects.
SET(CMAKE_ASM_COMPILER_WORKS 1 CACHE INTERNAL "")



Now try this in CMakeLists.txt.

Project(Test ASM C)
      # check nasm visibility support
      SET(SOURCE "global _foo:function hidden")
      FILE(WRITE "${CMAKE_BINARY_DIR}/CMakeTmp/src.nasm" "${SOURCE}")

      TRY_COMPILE(NASM_HAS_VISIBILITY
                  ${CMAKE_BINARY_DIR}
                  ${CMAKE_BINARY_DIR}/CMakeTmp/src.nasm
                  OUTPUT_VARIABLE OUTPUT)


BTW, the modules in CMAKE_ROOT contain this typo like above:


SET(CMAKE_ASM_INFOMATION_LOADED 1)

Shouldn't it be INFORMATION?
-- 
(°=                 =°)
//\ Prakash Punnoor /\\
V_/                 \_V