[CMake] Re: Frameworks and FIND_FILE

[William A. Hoffman]

OK, I have checked in support for frameworks in FIND_FILE, and FIND_LIBRARY.
It works like this:

Assume we have some framework foo, with 
/System/Library/Frameworks/foo.framework/Headers/foo.h

FIND_FILE(FOO foo.h)  --  Sets FOO to /System/Library/Frameworks/foo.framework/Headers

FIND_FILE(FOOFRAME foo/foo.h) -- Sets FOOFRAME to /System/Library/Frameworks/foo.framework

FIND_LIBRARY(FOOLIB foo)  -- Sets FOOLIB to /System/Library/Frameworks/foo.framework

ADD_EXECUTABLE(bar bar.c)

TARGET_LINK_LINBRARY(bar ${FOOLIB}) - foreach .o that is part of bar -F/System/Library is added
to the compile line.  For linking -F/System/Library and -framework foo are added to the link line.


INCLUDE_DIRECTORIES(${FOO}) -- Adds a -I/System/Library/Frameworks/foo.framework/Headers
to the compile line.

INCLUDE_DIRECTORIES(${FOOFRAME}) -- Adds a -F/System/Library to the compile line.

It will only add a -F once, duplicates are removed.  Also, I did not stop it from
adding -F for system locations like /System/Library because it does not cause a
warning, and is more simple.

In searching for frameworks, the following search order is used:

(path listed in command)
$(CMAKE_LIBRARY_PATH)
$(PATH)
~/Library/Frameworks
/Library/Frameworks
/System/Library/Frameworks
/Network/Library/Frameworks

-Bill