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example of turning on arc for individual files

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/tools/make/trunk@39610 72102866-910b-0410-8b05-ffd578937521
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rfm 2016-03-25 14:48:54 +00:00
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Documentation/gnustep-make.texi
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@ -1574,6 +1574,15 @@ The variable needs to be defined before @file{common.make} is included,
and the library-combo needs to be ng-gnu-gnu for it to take effect (in
which case it causes the -fobjc-arc flag to be used when compiling any
Objective-C source files).
Alternatively, to switch on ARC for individual files, you can have a makefile
fragment like this:
@smallexample
ifeq ($(OBJC_RUNTIME_LIB), ng)
file1.m_FILE_FLAGS+=-fobjc-arc
file2.m_FILE_FLAGS+=-fobjc-arc
file9.m_FILE_FLAGS+=-fobjc-arc
endif
@end smallexample
@defvar xxx_FILE_FILTER_OUT_FLAGS
@code{xxx_FILE_FILTER_OUT_FLAGS} (where xxx is the file name, such as mframe.m)