[ trimming Cc: ] Hello, * Joern Rennecke wrote on Tue, Feb 09, 2010 at 11:46:15AM CET: > However, I wonder if there is a better way to do the string processing - > I only do autoconf hacking sporadically, and my code looks somewhat > different from the original style. I haven't had a chance to look at it in detail, but: > 2010-02-09 Joern Rennecke <joern.rennecke@xxxxxxxxxxxx> > > libcpp: > * aclocal (_AC_CHECK_PROTO_BODY): New shell function. > (AC_CHECK_PROTO, _AC_CHECK_PROTOS, AC_CHECK_PROTOS): New macros. > * configure.ac: Use AC_CHECK_PROTOS instead of AC_CHECK_DECLS. > * configure: Regenerate. > --- libcpp/aclocal.m4 (revision 156598) > +++ libcpp/aclocal.m4 (working copy) > @@ -22,3 +22,75 @@ m4_include([../config/lib-link.m4]) > m4_include([../config/lib-prefix.m4]) > m4_include([../config/override.m4]) > m4_include([../config/warnings.m4]) > + > +## ---------------------------------------------------------------- ## > +## Checking for declared symbols. ## > +## This is like *AC_CHECK_DECL*, except that for c++, we may use a ## > +## prototype to check for a (possibly overloaded) function. ## > +## ---------------------------------------------------------------- ## > + > + > +# _AC_CHECK_PROTO_BODY > +# ------------------- > +# Shell function body for AC_CHECK_PROTO. > +m4_define([_AC_CHECK_PROTO_BODY], > +[ AS_LINENO_PUSH([$[]1]) > + [as_decl_name=`echo $][2|sed 's/(.*//'`] > + [as_decl_use=`echo $][2|sed -e 's/(/((/' -e 's/\()\|,\)/) 0&/'`] sed alternation \| is not portable. > + AC_CACHE_CHECK([whether $as_decl_name is declared], [$[]3], > + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$[]4], > +[@%:@ifndef $[]as_decl_name > +@%:@ifdef __cplusplus > + $[]as_decl_type What is this variable? It doesn't seem to be defined anywhere. > + (void) $[]as_decl_use; > +@%:@else > + (void) $[]as_decl_name; > +@%:@endif > +@%:@endif > +])], > + [AS_VAR_SET([$[]3], [yes])], > + [AS_VAR_SET([$[]3], [no])])]) > + AS_LINENO_POP > +])# _AC_CHECK_PROTO_BODY [...] Cheers, Ralf _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
