[cmake-developers] [CMake] Nina Generator on Windows generates too long link cmd lines

[Bill Hoffman]

On 6/4/2012 2:22 PM, Peter Kümmel wrote:
> We use ninja's response files:
>
> # Rule for linking CXX static library.
> rule CXX_STATIC_LIBRARY_LINKER
>    command = E:\sandbox\MinGW32\bin\ar.exe cr $out $LINK_FLAGS @$out.rsp
>    description = Linking CXX static library $out
>    rspfile = $out.rsp
>    rspfile_content = $in
>
> But the problem is, that ar under windows doesn't like paths with one single '\'
>
> and on some UNIXs doesn't support response files at all.
OK, my mistake.  The tool has to support response files.  So, currently 
with nmake files we do something like this:

Platform/Windows.cmake:
# for nmake make long command lines are redirected to a file
# with the following syntax, see Windows-bcc32.cmake for use
IF(CMAKE_GENERATOR MATCHES "NMake")
   SET(CMAKE_START_TEMP_FILE "@<<\n")
   SET(CMAKE_END_TEMP_FILE "\n<<")
ENDIF(CMAKE_GENERATOR MATCHES "NMake")


Does MinGW32 ar use a different format response file than MS link.exe? 
Seems like this should go in the Platform file.  Maybe we don't use it 
on UNIX?

-Bill