Hi, I would like to avoid undesired macro expansion on the result of AS_TR_CPP, and cannot get it to work. Can someone help, please? ================================ configure.ac ============================= AC_INIT([dummy], [0]) AM_INIT_AUTOMAKE dnl m4_define([FOO_BAR], [undesired substitution]) AC_DEFUN([MYCOND], [ AM_CONDITIONAL([LIBUNISTRING_]AS_TR_CPP([$1]), [true]) ]) MYCOND([foo/bar]) AC_OUTPUT ============================================================================ After $ aclocal $ autoconf everything looks fine. Now uncomment the line 4 of configure.ac. $ autoconf configure.ac:11: error: AC_SUBST: `LIBUNISTRING_undesired substitution_TRUE' is not a valid shell variable name aclocal.m4:125: AM_CONDITIONAL is expanded from... configure.ac:6: MYCOND is expanded from... configure.ac:11: the top level So I guess some more quoting is needed. Attempt #1: Use brackets. Change line 8 to AM_CONDITIONAL([LIBUNISTRING_][AS_TR_CPP([$1])], [true]) $ autoconf configure.ac:11: error: AC_SUBST: `LIBUNISTRING_AS_TR_CPP([foo/bar])_TRUE' is not a valid shell variable name aclocal.m4:125: AM_CONDITIONAL is expanded from... configure.ac:6: MYCOND is expanded from... configure.ac:11: the top level Attempt #2: Use m4_quote. Change line 8 to AM_CONDITIONAL([LIBUNISTRING_]m4_quote(AS_TR_CPP([$1])), [true]) $ autoconf configure.ac:11: error: AC_SUBST: `LIBUNISTRING_undesired substitution_TRUE' is not a valid shell variable name aclocal.m4:125: AM_CONDITIONAL is expanded from... configure.ac:6: MYCOND is expanded from... configure.ac:11: the top level Attempt #3: Use m4_dquote. Change line 8 to AM_CONDITIONAL([LIBUNISTRING_]m4_dquote(AS_TR_CPP([$1])), [true]) $ autoconf configure.ac:11: error: AC_SUBST: `LIBUNISTRING_[undesired substitution]_TRUE' is not a valid shell variable name aclocal.m4:125: AM_CONDITIONAL is expanded from... configure.ac:6: MYCOND is expanded from... configure.ac:11: the top level Attempt #4: Use m4_quote and brackets. Change line 8 to AM_CONDITIONAL([LIBUNISTRING_]m4_quote([AS_TR_CPP([$1])]), [true]) $ autoconf configure.ac:11: error: AC_SUBST: `LIBUNISTRING_AS_TR_CPP([foo/bar])_TRUE' is not a valid shell variable name aclocal.m4:125: AM_CONDITIONAL is expanded from... configure.ac:6: MYCOND is expanded from... configure.ac:11: the top level Yes, I know I could write AM_CONDITIONAL(AS_TR_CPP([LIBUNISTRING_$1]), [true]) but this feels like cheating, because it exploits a particular fact about the AS_TR_CPP macro. What am I missing? Bruno _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
