Merge remote-tracking branch 'origin/maint'

[bison.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 36f55948f2551acfbcd44197d622bc13d4308620..0facd4ab25d54eaef4f56228697b906a9848ed5b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,10 +1,10 @@
 # Configure template for GNU Bison.                   -*-Autoconf-*-
 #
 # Configure template for GNU Bison.                   -*-Autoconf-*-
 #

-# Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2001-2012 Free Software Foundation, Inc.

 #
 #

-# This program is free software; you can redistribute it and/or modify
+# This program is free software: you can redistribute it and/or modify

 # it under the terms of the GNU General Public License as published by
 # it under the terms of the GNU General Public License as published by

-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation, either version 3 of the License, or

 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,


@@ -13,65 +13,103 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License

-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301  USA
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.

 
 

-# This file uses AC_CONFIG_MACRO_DIR, so we need Autoconf 2.58 or better.
-# But Autoconf 2.58 has a bug in the way that it generates tests: it
-# puts the wrong absolute path names in the tests.  So we need at
-# least Autoconf 2.59.
-AC_PREREQ(2.59)
+# In order for some versions of Sun Studio to compile our C++ test cases
+# correctly, we need Autoconf 2.64 or better to handle the restrict
+# keyword in at least string.h from gnulib.  We need Autoconf 2.68 or
+# better to avoid a typo in the `configure --help' entry for the YACC
+# environment variable.
+AC_PREREQ([2.68])
+m4_pattern_forbid([^gl_[A-Z]])
+
+AC_INIT([GNU Bison],
+        m4_esyscmd([build-aux/git-version-gen .tarball-version]),
+        [bug-bison@gnu.org])
+AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2012])
+AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
+                   [The copyright year for this package])

 
 

-AC_INIT([GNU Bison], [2.1a], [bug-bison@gnu.org])

 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 

-# We don't have a file m4/Makefile.am, so we need Automake 1.8 or later.
-AM_INIT_AUTOMAKE([1.8 check-news readme-alpha dist-bzip2])
-AC_CONFIG_HEADERS([config.h:config.hin])
-
-gl_USE_SYSTEM_EXTENSIONS
+# Automake 1.10.3 and 1.11.1 fix a security flaw discussed here:
+#
+#   http://thread.gmane.org/gmane.comp.sysutils.autotools.announce/131
+#
+# To avoid 1.11, we make 1.11.1 the minimum version.
+#
+# We want gnits strictness only when rolling a stable release.  For
+# release candidates, we use version strings like 2.4.3_rc1, but gnits
+# doesn't like that, so we let the underscore disable gnits.  Between
+# releases, we want to be able run make dist without being required to
+# add a bogus NEWS entry.  In that case, the version string
+# automatically contains a dash, which we also let disable gnits.
+AM_INIT_AUTOMAKE([1.11.1 dist-xz nostdinc
+                 color-tests parallel-tests
+                 silent-rules]
+                 m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
+                           [gnu], [gnits]))
+AM_SILENT_RULES([yes])
+AC_CONFIG_HEADERS([lib/config.h:lib/config.in.h])

 
 # Checks for the compiler.
 
 # Checks for the compiler.

-AC_PROG_CC
-AM_PROG_CC_STDC
-AC_ARG_ENABLE(gcc-warnings,
+AC_PROG_CC_STDC
+AC_PROG_CXX
+
+# Gnulib (early checks).
+gl_EARLY
+
+AC_ARG_ENABLE([gcc-warnings],

 [  --enable-gcc-warnings   turn on lots of GCC warnings (not recommended)],
 [  --enable-gcc-warnings   turn on lots of GCC warnings (not recommended)],

-[case "${enableval}" in
+[case $enable_gcc_warnings in

    yes|no) ;;
    yes|no) ;;

-   *)      AC_MSG_ERROR([bad value ${enableval} for gcc-warnings option]) ;;
+   *)  AC_MSG_ERROR([invalid value for --gcc-warnings: $enable_gcc_warnings]);;

  esac],
  esac],

-              [enableval=no])
-if test "${enableval}" = yes; then
-  BISON_WARNING(-Werror)
-  AC_SUBST([WERROR_CFLAGS], [$WARNING_CFLAGS])
-  WARNING_CFLAGS=
-  BISON_WARNING(-W)
-  BISON_WARNING(-Wall)
-  BISON_WARNING(-Wcast-align)
-  BISON_WARNING(-Wcast-qual)
-  BISON_WARNING(-Wformat)
-  BISON_WARNING(-Wwrite-strings)
-  AC_SUBST([WARNING_CXXFLAGS], [$WARNING_CFLAGS])
-  # The following warnings are not suitable for C++.
-  BISON_WARNING(-Wbad-function-cast)
-  BISON_WARNING(-Wmissing-declarations)
-  BISON_WARNING(-Wmissing-prototypes)
-  BISON_WARNING(-Wnested-externs)
-  BISON_WARNING(-Wshadow)
-  BISON_WARNING(-Wstrict-prototypes)
-  AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
+              [enable_gcc_warnings=no])
+if test "$enable_gcc_warnings" = yes; then
+  warn_common='-Wall -Wextra -Wno-sign-compare -Wcast-align
+    -Wcast-qual -Wformat -Wpointer-arith -Wwrite-strings'
+  warn_c='-Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes
+    -Wshadow -Wstrict-prototypes'
+  warn_cxx='-Wnoexcept'
+
+  AC_LANG_PUSH([C])
+  for i in $warn_common $warn_c;
+  do
+    gl_WARN_ADD([$i], [WARN_CFLAGS])
+  done
+  gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
+  # Warnings for the test suite only.
+  gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
+  gl_WARN_ADD([-pedantic], [WARN_CFLAGS_TEST])
+  AC_LANG_POP([C])
+
+  AC_LANG_PUSH([C++])
+  for i in $warn_common $warn_cxx;
+  do
+    gl_WARN_ADD([$i], [WARN_CXXFLAGS])
+  done
+  gl_WARN_ADD([-Wzero-as-null-pointer-constant], [WARN_CXXFLAGS],
+              [AC_LANG_PROGRAM([], [nullptr])])
+  gl_WARN_ADD([-Werror], [WERROR_CXXFLAGS])
+  # Warnings for the test suite only.
+  gl_WARN_ADD([-Wundef], [WARN_CXXFLAGS_TEST])
+  gl_WARN_ADD([-pedantic], [WARN_CXXFLAGS_TEST])
+  AC_LANG_POP([C++])

 fi
 
 fi
 

+BISON_TEST_FOR_WORKING_C_COMPILER
+BISON_TEST_FOR_WORKING_CXX_COMPILER
+

 AC_ARG_ENABLE([yacc],
   [AC_HELP_STRING([--disable-yacc],
      [do not build a yacc command or an -ly library])],
   , [enable_yacc=yes])
 case $enable_yacc in
 yes)
 AC_ARG_ENABLE([yacc],
   [AC_HELP_STRING([--disable-yacc],
      [do not build a yacc command or an -ly library])],
   , [enable_yacc=yes])
 case $enable_yacc in
 yes)

-  YACC_SCRIPT=yacc
-  YACC_LIBRARY=liby.a;;
+  YACC_SCRIPT=src/yacc
+  YACC_LIBRARY=lib/liby.a;;

 *)
   YACC_SCRIPT=
   YACC_LIBRARY=;;
 *)
   YACC_SCRIPT=
   YACC_LIBRARY=;;


@@ -81,34 +119,41 @@ AC_SUBST([YACC_LIBRARY])
 
 # Checks for programs.
 AC_PROG_LEX
 
 # Checks for programs.
 AC_PROG_LEX

+$LEX_IS_FLEX || AC_MSG_ERROR([Flex is required])

 AC_PROG_YACC
 AC_PROG_RANLIB
 AC_PROG_YACC
 AC_PROG_RANLIB

-BISON_PROG_GNU_M4
-if test x"$ac_cv_prog_gnu_m4" != xyes; then
-  AC_MSG_ERROR([GNU M4 1.4 is required])
-fi
+AC_PROG_GNU_M4

 AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
 AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])

+AC_DEFINE_UNQUOTED([M4_GNU_OPTION], ["$M4_GNU"], [Define to "-g" if GNU M4
+supports -g, otherwise to "".])
+AC_PATH_PROG([PERL], [perl])
+if test -z "$PERL"; then
+   AC_MSG_ERROR([perl not found])
+fi
+AM_MISSING_PROG([HELP2MAN], [help2man])
+AC_PATH_PROG([XSLTPROC], [xsltproc])
+AC_SUBST([XSLTPROC])

 
 # Checks for header files.
 AC_CHECK_HEADERS_ONCE([locale.h])
 
 # Checks for header files.
 AC_CHECK_HEADERS_ONCE([locale.h])

-AM_STDBOOL_H

 
 # Checks for compiler characteristics.
 AC_C_INLINE
 
 
 # Checks for compiler characteristics.
 AC_C_INLINE
 

-# Checks for types.
-AC_CHECK_TYPES([uintptr_t])
+# Gnulib (later checks).  Putting them here rather than right after
+# gl_EARLY avoids some redundant checks.
+gl_INIT

 
 # Checks for library functions.
 AC_CHECK_FUNCS_ONCE([setlocale])
 AM_WITH_DMALLOC
 
 # Checks for library functions.
 AC_CHECK_FUNCS_ONCE([setlocale])
 AM_WITH_DMALLOC

-BISON_PREREQ_SUBPIPE

 BISON_PREREQ_TIMEVAR
 
 BISON_PREREQ_TIMEVAR
 

-# gnulib and gettext.
-GNULIB_AUTOCONF_SNIPPET
-# We use po/Makevars, so we need at least gettext 0.12.
-AM_GNU_GETTEXT_VERSION([0.12])
+# Gettext.
+# We use gnulib, which is only guaranteed to work properly with the
+# latest Gettext.
+AM_GNU_GETTEXT([external], [need-ngettext])
+AM_GNU_GETTEXT_VERSION([0.18])

 BISON_I18N
 
 # Internationalized parsers.
 BISON_I18N
 
 # Internationalized parsers.


@@ -117,26 +162,35 @@ AC_CONFIG_FILES([runtime-po/Makefile.in])
 aclocaldir='${datadir}/aclocal'
 AC_SUBST([aclocaldir])
 
 aclocaldir='${datadir}/aclocal'
 AC_SUBST([aclocaldir])
 

+# Create the benchmark script.
+AC_CONFIG_FILES([etc/bench.pl], [chmod +x etc/bench.pl])
+

 # Initialize the test suite.
 AC_CONFIG_TESTDIR(tests)
 # Initialize the test suite.
 AC_CONFIG_TESTDIR(tests)

-AC_CONFIG_FILES([tests/Makefile tests/atlocal])
+AC_CONFIG_FILES([tests/atlocal])

 AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
 AC_CHECK_PROGS([VALGRIND], [valgrind])
 AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
 AC_CHECK_PROGS([VALGRIND], [valgrind])

-AC_PROG_CXX
-BISON_TEST_FOR_WORKING_CXX_COMPILER

 AM_MISSING_PROG([AUTOM4TE], [autom4te])
 # Needed by tests/atlocal.in.
 AC_SUBST([GCC])
 AM_MISSING_PROG([AUTOM4TE], [autom4te])
 # Needed by tests/atlocal.in.
 AC_SUBST([GCC])

-O0CFLAGS=`echo $CFLAGS | sed 's/-O[[0-9]] *//'`
-AC_SUBST([O0CFLAGS])
-O0CXXFLAGS=`echo $CXXFLAGS | sed 's/-O[[0-9]] *//'`
-AC_SUBST([O0CXXFLAGS])

 
 

+gt_JAVACOMP([1.3], [1.4])
+gt_JAVAEXEC
+
+# We use gnulib, but from lib/local.mk instead of lib/Makefile.am.
+# So prefix paths with lib/.  See also etc/prefix-gnulib-mk.
+gl_LIBOBJS=`echo "$gl_LIBOBJS" | sed -e 's, , lib/,g'`
+# Listing the names of the variables to prefix is error-prone.
+# Rather, adjust all the AC_SUBST variables whose name ends in '_H',
+# and whose content ends in '.h'.
+for ac_var in $ac_subst_vars
+do
+  eval "ac_val=\$$ac_var"
+  case $ac_var=$ac_val in
+    (*_H=*.h) eval "$ac_var=lib/\$$ac_var";;
+  esac
+done

 AC_CONFIG_FILES([Makefile
 AC_CONFIG_FILES([Makefile

-                 build-aux/Makefile

                  po/Makefile.in
                  po/Makefile.in

-                 data/Makefile
-                examples/Makefile
-                   examples/calc++/Makefile
-                 lib/Makefile src/Makefile doc/Makefile])
+                 doc/yacc.1])

 AC_OUTPUT
 AC_OUTPUT