[CMake] RULE_LAUNCH_LINK with non-Makefile generators

[Jozsef Bakosi]

Hi folks,

my previous post, titled "Produce only an object file (*.o) from a CMake
build target", in response to an older
post<http://www.cmake.org/pipermail/cmake/2011-January/042284.html>
did
not go through correctly, so I will state my question again:

I'm trying to generate a custom link line for a single target by hijacking
the cmake-generated link line using the idea in the previous post linked
above. Essentially, prefixing the link line with a shell script that
replaces the linker executable <CMAKE_CXX_COMPILER> in the link rule
via RULE_LAUNCH_LINK, which works fine. Example:

set_target_properties(${TARGET} PROPERTIES RULE_LAUNCH_LINK
    "${CMAKE_CURRENT_SOURCE_DIR}/hijack.sh ${MY_CUSTOM_LINKER}"

where hijack.sh is:

#!/bin/sh
comp=$1  # save MY_CUSTOM_LINKER
shift 2        # skip the cmake-generated linker
for var in "$@"; do comp="$comp $var"; done # add rest of arguments
$comp       # link with MY_CUSTOM_LINKER

This works fine with make, but RULE_LAUNCH_LINK only works with Makefile
generators.

Are there any plans supporting RULE_LAUNCH_LINK with ninja?

Is there another way to replace the linker executable for a single file?

Thanks,
Jozsef
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