diff options
author | Alexey Neyman <stilor@att.net> | 2017-02-16 04:36:39 (GMT) |
---|---|---|
committer | GitHub <noreply@github.com> | 2017-02-16 04:36:39 (GMT) |
commit | 2f052394a5376fe90c240972e2cb8f8abcc7267c (patch) | |
tree | 49c67ed5fb9729ef554c3a07a916612af5139e24 /configure.ac | |
parent | fbc69323085e2370faeb8b46291cd66cbf9ef649 (diff) | |
parent | 7bcf18bfab84374d3305c7a088f95ac1219ddf93 (diff) |
Merge pull request #596 from stilor/sed-vs-gsed
Determine whether -E/-r option selects extended regexp
Diffstat (limited to 'configure.ac')
-rw-r--r-- | configure.ac | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/configure.ac b/configure.ac index 11c5a8e..439cdca 100644 --- a/configure.ac +++ b/configure.ac @@ -171,15 +171,27 @@ AS_IF([test "$EGREP" != "$GREP -E"], ACX_WITH_DEPRECATED([sed], [SED]) AC_ARG_VAR([INSTALL], [Specify the full path to GNU sed]) AC_PROG_SED -AC_MSG_CHECKING([whether sed understands -r -i -e]) -echo foo > .ct-ng.sed.test -${SED} -r -i -e 's/f(o)o/b\1ar/' .ct-ng.sed.test >/dev/null 2>&1 -rc=$? -content=`cat .ct-ng.sed.test` -rm -f .ct-ng.sed.test -AS_IF([test "$rc:$content" = "0:boar"], - [AC_MSG_RESULT([yes])], - [AC_MSG_ERROR([sed does not accept -r -i -e])]) +AC_CACHE_CHECK([whether $SED understands -i -e], + [acx_cv_sed_i_e], + [echo foo > .ct-ng.sed.test + ${SED} -i -e 's/foo/bar/' .ct-ng.sed.test >/dev/null 2>&1 + rc=$? + content=`cat .ct-ng.sed.test` + rm -f .ct-ng.sed.test + AS_IF([test "$rc:$content" = "0:bar"], + [acx_cv_sed_i_e=yes], + [AC_MSG_ERROR([sed does not accept -i -e])])]) +AC_CACHE_CHECK([which $SED option selects extended regexp], + [acx_cv_sed_r], + [opt_r=`echo foo | $SED -r -e 's/f(o)o/b\1ar/' 2>/dev/null` + opt_E=`echo foo | $SED -E -e 's/f(o)o/b\1ar/' 2>/dev/null` + AS_IF([test "$opt_r" = "boar"], + [acx_cv_sed_r=-r], + [test "$opt_E" = "boar"], + [acx_cv_sed_r=-E], + [AC_MSG_ERROR([neither -r nor -E enables extended regexp])])]) +SED_R="$SED $acx_cv_sed_r" +AC_SUBST([SED_R]) AC_PROG_LN_S |