Mercurial > hg > octave-lojdl > gnulib-hg
changeset 1422:3cb802f6756f
Use syscmd, ifelse, and sysval. Mainly as an exercise
to prove that this macro can be used in packages without regex.c.
| author | Jim Meyering <jim@meyering.net> |
|---|---|
| date | Sat, 04 Jul 1998 16:45:18 +0000 |
| parents | 6ee707631fa8 |
| children | c7976d28d865 |
| files | m4/regex.m4 |
| diffstat | 1 files changed, 15 insertions(+), 7 deletions(-) [+] |
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--- a/m4/regex.m4 +++ b/m4/regex.m4 @@ -1,15 +1,23 @@ #serial 1 -dnl From grep. +dnl Derived from code in GNU grep. AC_DEFUN(jm_WITH_REGEX, [ - AC_ARG_WITH(included-regex, + dnl Even packages that don't use regex.c can use this macro. + dnl Of course, for them it doesn't do anything. + + syscmd([test -f lib/regex.c]) + ifelse(sysval, 0, + [ + AC_ARG_WITH(included-regex, [ --without-included-regex don't compile regex (use with caution)], - jm_with_regex=$withval, - jm_with_regex=yes) - if test "$jm_with_regex" = yes; then - LIBOBJS="$LIBOBJS regex.o" - fi + jm_with_regex=$withval, + jm_with_regex=yes) + if test "$jm_with_regex" = yes; then + LIBOBJS="$LIBOBJS regex.o" + fi + ], + ) ] )