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try_run: Add support for LINK_LIBRARIES option.

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Most functionality is already implemented in Source/cmCoreTryCompile.{h,cxx}.
Document and improve argument parsing.

This functionality is already being used by a number of modules, like
CheckCSourceCompiles.cmake, but it is not documented.
This commit is contained in:
Matt McCormick
2015-01-01 22:30:08 -05:00
committed by Brad King
parent 07cbe3640e
commit e2b1f0583f
5 changed files with 18 additions and 5 deletions
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9
Help/command/try_run.rst
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@@ -6,8 +6,9 @@ Try compiling and then running some code.
::
try_run(RUN_RESULT_VAR COMPILE_RESULT_VAR
bindir srcfile [CMAKE_FLAGS <Flags>]
bindir srcfile [CMAKE_FLAGS <flags>]
[COMPILE_DEFINITIONS <flags>]
[LINK_LIBRARIES <libs>]
[COMPILE_OUTPUT_VARIABLE comp]
[RUN_OUTPUT_VARIABLE run]
[OUTPUT_VARIABLE var]
@@ -22,6 +23,12 @@ where the output from the compile step goes. RUN_OUTPUT_VARIABLE
specifies the variable where the output from the running executable
goes.
The srcfile signature also accepts a LINK_LIBRARIES argument which may
contain a list of libraries or IMPORTED targets which will be linked
to in the generated project. If LINK_LIBRARIES is specified as a
parameter to try_run, then any LINK_LIBRARIES passed as
CMAKE_FLAGS will be ignored.
For compatibility reasons OUTPUT_VARIABLE is still supported, which
gives you the output from the compile and run step combined.