[CMake] Adding static libraries

[Steven Van Ingelgem]

Hi,


I was talking to Miguel about the recent FindwxWidgets changes because
they didn't work out on for static libraries on a Mac.

Summarizing the issue is that CMake makes the (wrong) assumption that
what you want to add are shared libraries (at least on a Mac).

Let me explain in more detail what happens:

The outcome of the Find-file is:
wxWidgets_LIBRARIES: -arch ppc;-arch i386;;-framework
QuickTime;-framework IOKit;-framework Carbon;-framework
Cocoa;-framework
System;;/usr/lib/libwx_macu_adv-2.9.a;/usr/lib/libwx_macu_core-2.9.a;/usr/lib/libwx_base_carbonu_net-2.9.a;/usr/lib/libwx_base_carbonu-2.9.a;/usr/lib/libwx_base_carbonu_xml-2.9.a;-framework
WebKit;-lwxregexu-2.9;-lwxexpat-2.9;-lwxtiff-2.9;-lwxjpeg-2.9;-lwxpng-2.9;-lwxzlib-2.9;-lpthread;-liconv

As you might notice it's a mix of static and dynamic libraries.

Then I add them with the command
TARGET_LINK_LIBRARIES(...)


Then when I want to link them on a Linux it adds -Wl,-Bstatic -l...
where ... is the NAME of the library, not the path that was passed in.
Example: -Wl,-Bstatic -lwx_macu_core-2.9 -lwx_base_carbonu_net-2.9 ... etc ...

Now on a Mac (XCode 2.5, GCC 4.0.1) this -Wl flag doesn't exist, but
the library list STILL includes "-lwx_macu_core-2.9
-lwx_base_carbonu_net-2.9", so the directory where it needs to look
for the static libraries is lost.


My proposal is to change the behaviour of CMake to add the static
libraries as they are given on the command line... The user knows
best! For example if I would have a static library in
/home/steven/test/libtest.a, and one in /usr/lib/libtest.a with BOTH
the same name, and BOTH static, but I add the
/home/steven/test/libtest.a, then CMake will end up using the
/usr/lib/libtest.a... Even though I said to use the one in "home".


I hope I made myself completely clear here... And I hope I'm not going
completely nuts here or is this really a bug in CMake?


Steven, out.