Annotation of /branches/pure-cfg/config/ax_check_framework.m4

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1 :	jhr	1170	dnl ax_check_framework.m4
2 :			dnl
3 :			dnl COPYRIGHT (c) 2008 John Reppy (http://cs.uchicago.edu/~jhr)
4 :			dnl All rights reserved.
5 :			dnl
6 :			dnl @synopsis AX_CHECK_FRAMEWORK(framework, [action-if-found], [action-if-not-found])
7 :			dnl
8 :			dnl This macro is similar to the AC_CHECK_LIB macro, except that it works
9 :			dnl for Mac OS X frameworks. It checks to see if the given framework exists
10 :			dnl on the host sytem and if so prepends "-framework framework" to the FRAMEWORKS
11 :			dnl variable.
12 :			dnl
13 :			dnl @author John Reppy <http://cs.uchicago.edu/~jhr>
14 :			dnl
15 :			AC_DEFUN([AX_CHECK_FRAMEWORK],[
16 :			AC_REQUIRE([AC_CANONICAL_HOST])dnl
17 :			case x"$host_os" in
18 :			xdarwin*)
19 :			AS_VAR_PUSHDEF([ax_Check], [ax_cv_check_$1])
20 :			AC_CACHE_CHECK([for framework $1], [ax_Check],[
21 :			AC_LANG_PUSH([C])
22 :			ac_check_framework_save_LIBS=$LIBS
23 :			LIBS="-framework $1 $LIBS"
24 :			AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])], [ax_Check="yes"], [ax_Check="no"])
25 :			AC_LANG_POP([C])dnl
26 :			])
27 :			if test x"$ax_Check" = "xyes" ; then
28 :			m4_ifvaln([$2],[$2],[:])dnl
29 :			else
30 :			m4_ifvaln([$3],[$3],[:])dnl
31 :			LIBS=$ac_check_framework_save_LIBS
32 :			fi
33 :			AS_VAR_POPDEF([ax_Check])dnl
34 :			;;
35 :			esac
36 :			])dnl

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