On 5/25/2010 8:57 PM, Michael Hertling wrote:
On 05/25/2010 06:13 PM, Theodore Papadopoulo wrote:
In porting a library (blitz) from autoconf to cmake, I have the
sub-project of testing C++ compiler features.
The autoconf way was to create some C++ files and test that they are
compiling (and just compiling not linking).
TRY_COMPILE (in the variant that creates automatically the CMake
project) seems to oblige me to link the code.
Many of the tests (taken from autoconf) do not include a main(), some
the tests fail. Obviously, I can create a main,
but I wondered if there was an easy way to avoid the linking phase
(without having to create my own CMake project
for all those files).
Use the CMAKE_FLAGS of TRY_COMPILE() to pass in a no-op for the linker:
TRY_COMPILE(...
CMAKE_FLAGS "-DCMAKE_CXX_LINK_EXECUTABLE='echo not linking now...'"
...)
That will not work with Xcode and VS. The best you can do with those
generators is to create a static library instead of a linked executable.
-Bill
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