diff options
| -rw-r--r-- | configure.ac | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/configure.ac b/configure.ac index 7594d1a..b302083 100644 --- a/configure.ac +++ b/configure.ac @@ -59,11 +59,18 @@ dnl FLEX_GNU_GETTEXT_REAL_REQUIRE_VERSION=0.14 AM_GNU_GETTEXT_REQUIRE_VERSION([0.19.6]) AM_GNU_GETTEXT_VERSION([0.19.6]) AC_PROG_YACC -AS_IF([test "$YACC" != 'bison -y'], [ - YACC="\${top_srcdir}/build-aux/missing bison -y" - AC_MSG_NOTICE(no bison program found: only required for maintainers) - ]) -AM_CONDITIONAL([HAVE_BISON], [test "$YACC" = 'bison -y']) + # Extract the first word of "$YACC", so it can be a program name with args. + set dummy $YACC; ac_word=$2 + AC_MSG_CHECKING(whether $ac_word is GNU Bison) + AS_IF([test -n "$YACC" && $YACC --version 2>&1 | $GREP "GNU Bison" >/dev/null], + [AC_MSG_RESULT(yes) + use_gnu_bison=1], + [AC_MSG_RESULT(no) + AC_MSG_WARN($YACC does not appear to be GNU Bison; required for maintainers) + use_gnu_bison=0 + YACC="\${top_srcdir}/build-aux/missing bison" + ]) +AM_CONDITIONAL([HAVE_BISON], [test $use_gnu_bison -eq 1]) AM_PROG_LEX AC_PROG_CC AX_PROG_CC_FOR_BUILD @@ -126,12 +133,17 @@ AC_CACHE_CHECK([for m4 that supports -P], [ac_cv_path_M4], AC_SUBST([M4], [$ac_cv_path_M4]) AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the m4 executable name.]) -AC_PATH_PROG([INDENT], indent, [\${top_srcdir}/build-aux/missing indent]) - AC_MSG_CHECKING(if $INDENT is GNU indent) - AS_IF([$INDENT --version 2>/dev/null | head -n 1 | grep "GNU indent" >/dev/null], - [AC_MSG_RESULT(yes)], - [AC_MSG_RESULT(no) - AC_MSG_WARN($INDENT does not appear to be GNU indent; 'make indent' may not function properly) +AC_PATH_PROG([INDENT], indent) + AS_IF([test -n "$INDENT"], [ + # Extract the first word of "$INDENT", so it can be a program name with args. + set dummy $INDENT; ac_word=$2 + AC_MSG_CHECKING(whether $ac_word is GNU indent) + AS_IF([$INDENT --version 2>/dev/null | $GREP "GNU indent" >/dev/null], + [AC_MSG_RESULT(yes)], + [AC_MSG_RESULT(no) + AC_MSG_WARN($INDENT does not appear to be GNU indent; 'make indent' may not function properly) + INDENT="\${top_srcdir}/build-aux/missing indent" + ]) ]) # checks for headers |