* NightStrike wrote on Thu, Mar 13, 2008 at 09:20:06PM CET: > Should AS_CASE (http://www.gnu.org/software/autoconf/manual/autoconf.html#index-AS_005fCASE-1116) > always be used instead of case/esac inside configure.ac, some local > package m4 script, or AC_DEFUN macros? Most of the time that is purely an aesthetic question. It however matters if, inside AS_CASE arguments, you put AC_DEFUN'ed macros which themselves AC_REQUIRE other macros. They will then be expanded outside of the AS_CASE construct. Example: AC_INIT AC_DEFUN([FOO], [echo foo]) AC_DEFUN([BAR], [AC_REQUIRE([FOO]) echo bar]) x=zork AS_CASE([$x], [y*], [BAR]) will print 'foo' because FOO will be expanded outside of the AS_CASE. Note that with AS_IF of Autoconf's 2.61 and newer, the same holds (before 2.61, AS_IF was not m4_defun'ed, only m4_define'd, so the expansion of required macros was not pushed outside of it). Hope that helps. Cheers, Ralf _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
