<div class="gmail_quote">On Sat, May 30, 2009 at 12:23 PM, Sean Chittenden <span dir="ltr"><<a href="mailto:sean@chittenden.org">sean@chittenden.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello.<br>
<br>
I'm incorporating an external library in to our source tree and would like to run the external library's regression tests. The library is C, however, and the convention for doing this is:<br>
<br>
/* Lib contents above */<br>
#ifdef TESTING<br>
int main(int argc, char* argv[]) {<br>
/* Do tests<br>
}<br>
#endif<br>
<br>
Where I'm having my problem is in layering two source files like this that are interdependent. In the following example, both foo.c and foo_bar.c have #ifdef TESTING sections. In CMakeLists.txt, I have something like:<br>
<br>
add_executable(foo_test foo.c)<br>
add_test(foo_test ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/foo_test)<br>
set_property(TARGET foo_test APPEND PROPERTY COMPILE_FLAGS "-DTESTING")<br>
<br>
add_executable(foo_bar_test foo_bar.c foo.c)<br>
add_test(foo_bar_test ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/foo_bar_test)<br>
set_property(TARGET foo_bar_test APPEND PROPERTY COMPILE_FLAGS "-DTESTING")<br>
<br>
<br>
Which obviously doesn't work when building foo_bar_test because there are two main() functions now (foo_test works just fine). I've tried various SCOPE qualifiers such as SOURCE, TARGET and TEST with no luck. Having read the docs a few dozen times, the behavior of SCOPE for set_property is vague.</blockquote>
<div><br>When setting a TARGET property (aka set_target_properties) your settings affect only the building of the target that is specified. For SOURCE they will affect anywhere that source file is used in any target. <br>
<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Is set_property(TEST foo_bar_test SOURCE foo_bar.c APPEND PROPERTY COMPILE_FLAGS "-DTESTING") an an inclusive AND of the test requirements (for property to be set we must be building the TEST foo_bar_test *and* the SOURCE foo_bar.c) or is it an OR (for property to be set we must be building either TEST foo_bar_test *or* the SOURCE foo_bar.c). I can't use set_source_file_property() because there isn't a scope qualifier and I've got my own main() functions elsewhere. :)</blockquote>
<div><br>I'm not familiar with set_property(TEST foo_bar_test SOURCE foo_bar.c APPEND PROPERTY COMPILE_FLAGS "-DTESTING")<br><br>Have you considered just putting an<br><br>#ifndef TESTING<br>int main()<br>{<br>
...<br>}<br>#endif<br><br>around foo.c. Or simply refactoring the code so whatever code that's in foo.c that foo_bar_test needs just goes into a separate source file. That way foo.c and foo_bar.c each have only a main() function in them?<br>
<br></div></div><br clear="all"><br>-- <br>Philip Lowman<br>