Merge tag 'v2.5.1_rc2'

[bison.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 8dd693a61f02fb1a11cf8f43d2a03e2fd22e7298..95a1b0263b356f2f4f9c4e0ab2195b59f52eb952 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -26,9 +26,9 @@ m4_pattern_forbid([^gl_[A-Z]])
 AC_INIT([GNU Bison],
         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
         [bug-bison@gnu.org])
 AC_INIT([GNU Bison],
         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
         [bug-bison@gnu.org])

-AC_DEFINE([PACKAGE_COPYRIGHT_YEAR], [2012],
-          [The copyright year for this package])

 AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2012])
 AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2012])

+AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
+                   [The copyright year for this package])

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


@@ -45,50 +45,61 @@ AC_CONFIG_MACRO_DIR([m4])
 # 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.
 # 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]
+AM_INIT_AUTOMAKE([1.11.1 dist-xz nostdinc
+                 color-tests parallel-tests
+                 silent-rules]

                  m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
                            [gnu], [gnits]))
                  m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
                            [gnu], [gnits]))

-AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])
+AM_SILENT_RULES([yes])
+AC_CONFIG_HEADERS([lib/config.h:lib/config.in.h])

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

+AC_PROG_CXX

 
 # Gnulib (early checks).
 gl_EARLY
 
 
 # Gnulib (early checks).
 gl_EARLY
 

-AC_ARG_ENABLE(gcc-warnings,
+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 "${enableval}" = yes; then
+              [enable_gcc_warnings=no])
+if test "$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])
   gl_WARN_ADD([-Werror], [WERROR_CFLAGS])

-  AC_SUBST([WERROR_CFLAGS])
-  gl_WARN_ADD([-Wall])
-  gl_WARN_ADD([-Wextra -Wno-sign-compare])
-  gl_WARN_ADD([-Wcast-align])
-  gl_WARN_ADD([-Wcast-qual])
-  gl_WARN_ADD([-Wformat])
-  gl_WARN_ADD([-Wpointer-arith])
-  gl_WARN_ADD([-Wwrite-strings])
-  AC_SUBST([WARN_CXXFLAGS], [$WARN_CFLAGS])
-  # The following warnings are not suitable for C++.
-  gl_WARN_ADD([-Wbad-function-cast])
-  gl_WARN_ADD([-Wmissing-declarations])
-  gl_WARN_ADD([-Wmissing-prototypes])
-  gl_WARN_ADD([-Wshadow])
-  gl_WARN_ADD([-Wstrict-prototypes])
-  AC_SUBST([WARN_CFLAGS])

   # Warnings for the test suite only.
   gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
   gl_WARN_ADD([-pedantic], [WARN_CFLAGS_TEST])
   # Warnings for the test suite only.
   gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
   gl_WARN_ADD([-pedantic], [WARN_CFLAGS_TEST])

-  AC_SUBST([WARN_CXXFLAGS_TEST], ["$WARN_CXXFLAGS $WARN_CFLAGS_TEST"])
-  AC_SUBST([WARN_CFLAGS_TEST], ["$WARN_CFLAGS $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
 
 BISON_TEST_FOR_WORKING_C_COMPILER
 fi
 
 BISON_TEST_FOR_WORKING_C_COMPILER

+BISON_TEST_FOR_WORKING_CXX_COMPILER

 
 AC_ARG_ENABLE([yacc],
   [AC_HELP_STRING([--disable-yacc],
 
 AC_ARG_ENABLE([yacc],
   [AC_HELP_STRING([--disable-yacc],


@@ -107,12 +118,17 @@ 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_GNU_M4
 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_PROG_YACC
 AC_PROG_RANLIB
 AC_PROG_GNU_M4
 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])
 AM_MISSING_PROG([HELP2MAN], [help2man])
 AC_PATH_PROG([XSLTPROC], [xsltproc])
 AC_SUBST([XSLTPROC])


@@ -130,7 +146,6 @@ 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
 
 # Gettext.
 BISON_PREREQ_TIMEVAR
 
 # Gettext.


@@ -154,13 +169,9 @@ AC_CONFIG_TESTDIR(tests)
 AC_CONFIG_FILES([tests/atlocal])
 AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
 AC_CHECK_PROGS([VALGRIND], [valgrind])
 AC_CONFIG_FILES([tests/atlocal])
 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])

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

 
 gt_JAVACOMP([1.3], [1.4])
 gt_JAVAEXEC
 
 gt_JAVACOMP([1.3], [1.4])
 gt_JAVAEXEC


@@ -168,14 +179,17 @@ 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 "$gl_LIBOBJS" | sed -e 's, , lib/,g'`
 # We use gnulib, but from lib/local.mk instead of lib/Makefile.am.
 # So prefix paths with lib/.  See also etc/prefix-gnulib-mk.
 gl_LIBOBJS=`echo "$gl_LIBOBJS" | sed -e 's, , lib/,g'`

-for ac_var in ALLOCA_H ERRNO_H FCNTL_H GETOPT_H INTTYPES_H \
-              LIBUNISTRING_UNITYPES_H LIBUNISTRING_UNIWIDTH_H \
-              STDBOOL_H STDINT_H SYS_WAIT_H WCHAR_H WCTYPE_H
+# 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
 do

-  eval "test x\$$ac_var = x || $ac_var=lib/\$$ac_var"
+  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
                  po/Makefile.in
 done
 AC_CONFIG_FILES([Makefile
                  po/Makefile.in

-                 examples/calc++/Makefile

                  doc/yacc.1])
 AC_OUTPUT
                  doc/yacc.1])
 AC_OUTPUT