-dnl Process this file with autoconf to produce a configure script.
-AC_INIT(reduce.c)
+# Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.52)
+AC_INIT(bison, 1.28c, bug-bison@gnu.org)
+AC_CONFIG_AUX_DIR(config)
+AM_INIT_AUTOMAKE(bison, 1.28c)
+AM_CONFIG_HEADER(config.h:config.hin)
+
+# Initialize the test suite.
+AT_CONFIG(../src)
+
+# Checks for programs.
AC_PROG_CC
-AC_PROG_CPP
-AC_PROG_INSTALL
AC_MINIX
AC_ISC_POSIX
-AC_CONST
-AC_STDC_HEADERS
-AC_HAVE_HEADERS(string.h stdlib.h memory.h)
-AC_HAVE_FUNCS(strerror)
-AC_ALLOCA
-AC_OUTPUT(Makefile)
+AM_PROG_CC_STDC
+AC_PROG_RANLIB
+# GNU M4 is needed to build the testsuite.
+BISON_AC_PROG_GNU_M4
+if test "$ac_cv_prog_gnu_m4" != yes; then
+ missing_dir=`cd $ac_aux_dir && pwd`
+ M4="$missing_dir/missing m4"
+fi
+
+AC_ARG_ENABLE(gcc-warnings,
+[ --enable-gcc-warnings turn on lots of GCC warnings (not recommended)],
+[case "${enableval}" in
+ yes|no) ;;
+ *) AC_MSG_ERROR([bad value ${enableval} for gcc-warnings option]) ;;
+ esac],
+ [enableval=no])
+if test "${enableval}" = yes; then
+ BISON_WARNING(-Wall)
+ BISON_WARNING(-W)
+ BISON_WARNING(-Wbad-function-cast)
+ BISON_WARNING(-Wcast-align)
+ BISON_WARNING(-Wcast-qual)
+ BISON_WARNING(-Wformat)
+ BISON_WARNING(-Wmissing-declarations)
+ BISON_WARNING(-Wmissing-prototypes)
+ BISON_WARNING(-Wnested-externs)
+ BISON_WARNING(-Wshadow)
+ BISON_WARNING(-Wstrict-prototypes)
+ BISON_WARNING(-Wwrite-strings)
+ CFLAGS="$CFLAGS $WARNING_CFLAGS"
+fi
+
+# Checks for libraries.
+AC_DEFINE([_GNU_SOURCE],1,[Define to 1 for GNU C library extensions.])
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS(ctype.h locale.h memory.h stdlib.h string.h unistd.h)
+
+# Checks for typedefs.
+
+# Checks for structures.
+
+# Checks for compiler characteristics.
+AC_C_CONST
+AC_C_INLINE
+AM_C_PROTOTYPES
+
+# Checks for library functions.
+AC_FUNC_ALLOCA
+AC_CHECK_FUNCS(mkstemp setlocale)
+AC_CHECK_DECLS([stpcpy, strndup, strnlen, memchr])
+AC_REPLACE_FUNCS(stpcpy strndup strnlen strspn memchr)
+jm_FUNC_MALLOC
+jm_FUNC_REALLOC
+jm_PREREQ_QUOTEARG
+jm_PREREQ_ERROR
+
+ALL_LINGUAS="de es et fr ja nl ru"
+AM_GNU_GETTEXT
+
+# This is necessary so that .o files in LIBOBJS are also built via
+# the ANSI2KNR-filtering rules.
+LIBOBJS=`echo $LIBOBJS|sed 's/\.o /\$U.o /g;s/\.o$/\$U.o/'`
+AC_SUBST(LIBOBJS)
+
+AC_OUTPUT([Makefile
+ config/Makefile
+ intl/Makefile po/Makefile.in
+ lib/Makefile src/Makefile doc/Makefile
+ m4/Makefile
+ tests/Makefile tests/atconfig])