Automatic date update in version.in
[deliverable/binutils-gdb.git] / gdb / acinclude.m4
index be1c019ee72479b02e81986c3b4ee57415af24e0..2bdc1cedc262e8a47b1f3adbdb41d182f2322633 100644 (file)
@@ -4,288 +4,52 @@ dnl major rewriting for Tcl 7.5 by Don Libes <libes@nist.gov>
 # Keep these includes in sync with the aclocal_m4_deps list in
 # Makefile.in.
 
-sinclude(acx_configure_dir.m4)
+dnl NB: When possible, try to avoid explicit includes of ../config/ files.
+dnl They're normally found by aclocal automatically and recorded in aclocal.m4.
+dnl However, some are kept here explicitly to silence harmless warnings from
+dnl aclocal when it finds AM_xxx macros via local search paths instead of
+dnl system search paths.
 
-# This gets GDB_AC_LIBMCHECK.
-sinclude(libmcheck.m4)
+m4_include(acx_configure_dir.m4)
 
-dnl gdb/configure.in uses BFD_NEED_DECLARATION, so get its definition.
-sinclude(../bfd/bfd.m4)
-
-dnl This gets the standard macros.
-sinclude(../config/acinclude.m4)
-
-dnl This gets AC_PLUGINS, needed by ACX_LARGEFILE.
-sinclude(../config/plugins.m4)
+# This gets GDB_AC_TRANSFORM.
+m4_include(transform.m4)
 
-dnl For ACX_LARGEFILE.
-sinclude(../config/largefile.m4)
+# This gets AM_GDB_WARNINGS.
+m4_include(../gdbsupport/warning.m4)
 
-dnl For AM_SET_LEADING_DOT.
-sinclude(../config/lead-dot.m4)
+# AM_GDB_UBSAN
+m4_include(sanitize.m4)
 
-dnl This gets autoconf bugfixes.
-sinclude(../config/override.m4)
+# This gets GDB_AC_SELFTEST.
+m4_include(../gdbsupport/selftest.m4)
 
-dnl For ZW_GNU_GETTEXT_SISTER_DIR.
-sinclude(../config/gettext-sister.m4)
+dnl gdb/configure.in uses BFD_NEED_DECLARATION, so get its definition.
+m4_include(../bfd/bfd.m4)
 
-dnl For AC_LIB_HAVE_LINKFLAGS.
-sinclude(../config/lib-ld.m4)
-sinclude(../config/lib-prefix.m4)
-sinclude(../config/lib-link.m4)
+dnl For AM_LC_MESSAGES
+m4_include([../config/lcmessage.m4])
 
-dnl For ACX_PKGVERSION and ACX_BUGURL.
-sinclude(../config/acx.m4)
+dnl For AM_LANGINFO_CODESET.
+m4_include([../config/codeset.m4])
 
-dnl for TCL definitions
-sinclude(../config/tcl.m4)
+dnl We need to explicitly include these before iconv.m4 to avoid warnings.
+m4_include([../config/lib-ld.m4])
+m4_include([../config/lib-prefix.m4])
+m4_include([../config/lib-link.m4])
+m4_include([../config/iconv.m4])
 
-dnl For dependency tracking macros.
-sinclude([../config/depstand.m4])
+m4_include([../config/zlib.m4])
 
-dnl For AM_LC_MESSAGES
-sinclude([../config/lcmessage.m4])
+m4_include([../gdbsupport/common.m4])
 
-dnl For AM_LANGINFO_CODESET.
-sinclude([../config/codeset.m4])
-
-sinclude([../config/zlib.m4])
-
-m4_include([common/common.m4])
-
-## ----------------------------------------- ##
-## ANSIfy the C compiler whenever possible.  ##
-## From Franc,ois Pinard                     ##
-## ----------------------------------------- ##
-
-# Copyright (C) 1996-2013 Free Software Foundation, Inc.
-
-# 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
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# 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, see <http://www.gnu.org/licenses/>.
-
-# serial 1
-
-# @defmac AC_PROG_CC_STDC
-# @maindex PROG_CC_STDC
-# @ovindex CC
-# If the C compiler in not in ANSI C mode by default, try to add an option
-# to output variable @code{CC} to make it so.  This macro tries various
-# options that select ANSI C on some system or another.  It considers the
-# compiler to be in ANSI C mode if it handles function prototypes correctly.
-#
-# If you use this macro, you should check after calling it whether the C
-# compiler has been set to accept ANSI C; if not, the shell variable
-# @code{am_cv_prog_cc_stdc} is set to @samp{no}.  If you wrote your source
-# code in ANSI C, you can make an un-ANSIfied copy of it by using the
-# program @code{ansi2knr}, which comes with Ghostscript.
-# @end defmac
-
-AC_DEFUN([AM_PROG_CC_STDC],
-[AC_REQUIRE([AC_PROG_CC])
-AC_BEFORE([$0], [AC_C_INLINE])
-AC_BEFORE([$0], [AC_C_CONST])
-dnl Force this before AC_PROG_CPP.  Some cpp's, eg on HPUX, require
-dnl a magic option to avoid problems with ANSI preprocessor commands
-dnl like #elif.
-dnl FIXME: can't do this because then AC_AIX won't work due to a
-dnl circular dependency.
-dnl AC_BEFORE([$0], [AC_PROG_CPP])
-AC_MSG_CHECKING([for ${CC-cc} option to accept ANSI C])
-AC_CACHE_VAL(am_cv_prog_cc_stdc,
-[am_cv_prog_cc_stdc=no
-ac_save_CC="$CC"
-# Don't try gcc -ansi; that turns off useful extensions and
-# breaks some systems' header files.
-# AIX                  -qlanglvl=ansi
-# Ultrix and OSF/1     -std1
-# HP-UX 10.20 and later        -Ae
-# HP-UX older versions -Aa -D_HPUX_SOURCE
-# SVR4                 -Xc -D__EXTENSIONS__
-for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
-do
-  CC="$ac_save_CC $ac_arg"
-  AC_TRY_COMPILE(
-[#include <stdarg.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
-struct buf { int x; };
-FILE * (*rcsopen) (struct buf *, struct stat *, int);
-static char *e (p, i)
-     char **p;
-     int i;
-{
-  return p[i];
-}
-static char *f (char * (*g) (char **, int), char **p, ...)
-{
-  char *s;
-  va_list v;
-  va_start (v,p);
-  s = g (p, va_arg (v,int));
-  va_end (v);
-  return s;
-}
-int test (int i, double x);
-struct s1 {int (*f) (int a);};
-struct s2 {int (*f) (double a);};
-int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
-int argc;
-char **argv;
-], [
-return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
-],
-[am_cv_prog_cc_stdc="$ac_arg"; break])
-done
-CC="$ac_save_CC"
-])
-if test -z "$am_cv_prog_cc_stdc"; then
-  AC_MSG_RESULT([none needed])
-else
-  AC_MSG_RESULT([$am_cv_prog_cc_stdc])
-fi
-case "x$am_cv_prog_cc_stdc" in
-  x|xno) ;;
-  *) CC="$CC $am_cv_prog_cc_stdc" ;;
-esac
-])
+dnl For libiberty_INIT.
+m4_include(libiberty.m4)
 
-dnl Originally from Bruno Haible, but with some modifications
-dnl for the GDB project.
-
-AC_DEFUN([AM_ICONV],
-[
-  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
-  dnl those with the standalone portable GNU libiconv installed).
-
-  AC_ARG_WITH([libiconv-prefix],
-    AS_HELP_STRING([--with-libiconv-prefix=DIR], [search for libiconv in DIR/include and DIR/lib]), [
-    for dir in `echo "$withval" | tr : ' '`; do
-      if test -d $dir/include; then LIBICONV_INCLUDE="-I$dir/include"; fi
-      if test -d $dir/lib; then LIBICONV_LIBDIR="-L$dir/lib"; fi
-    done
-   ])
-
-  BUILD_LIBICONV_LIBDIRS="../libiconv/lib/.libs ../libiconv/lib/_libs"
-  BUILD_LIBICONV_INCLUDE="-I../libiconv/include"
-
-  AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
-    am_cv_func_iconv="no, consider installing GNU libiconv"
-    am_cv_lib_iconv=no
-    am_cv_use_build_libiconv=no
-    am_cv_build_libiconv_path=
-
-    # If libiconv is part of the build tree, then try using it over
-    # any system iconv.
-    if test -d ../libiconv; then
-      for lib_dir in $BUILD_LIBICONV_LIBDIRS; do
-        am_save_LIBS="$LIBS"
-        am_save_CPPFLAGS="$CPPFLAGS"
-        LIBS="$LIBS $lib_dir/libiconv.a"
-        CPPFLAGS="$CPPFLAGS $BUILD_LIBICONV_INCLUDE"
-        AC_TRY_LINK([#include <stdlib.h>
-#include <iconv.h>],
-          [iconv_t cd = iconv_open("","");
-           iconv(cd,NULL,NULL,NULL,NULL);
-           iconv_close(cd);],
-          am_cv_use_build_libiconv=yes
-          am_cv_build_libiconv_path=$lib_dir/libiconv.a
-          am_cv_lib_iconv=yes
-          am_cv_func_iconv=yes)
-        LIBS="$am_save_LIBS"
-        CPPFLAGS="$am_save_CPPFLAGS"
-        if test "$am_cv_use_build_libiconv" = "yes"; then
-          break
-        fi
-      done
-    fi
-
-    # Next, try to find iconv in libc.
-    if test "$am_cv_func_iconv" != yes; then
-      AC_TRY_LINK([#include <stdlib.h>
-#include <iconv.h>],
-        [iconv_t cd = iconv_open("","");
-         iconv(cd,NULL,NULL,NULL,NULL);
-         iconv_close(cd);],
-        am_cv_func_iconv=yes)
-    fi
-
-    # If iconv was not in libc, try -liconv.  In this case, arrange to
-    # look in the libiconv prefix, if it was specified by the user.
-    if test "$am_cv_func_iconv" != yes; then
-      am_save_CPPFLAGS="$CPPFLAGS"
-      am_save_LIBS="$LIBS"
-      if test -n "$LIBICONV_INCLUDE"; then
-        CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
-        LIBS="$LIBS $LIBICONV_LIBDIR"
-      fi
-      LIBS="$LIBS -liconv"
-      AC_TRY_LINK([#include <stdlib.h>
-#include <iconv.h>],
-        [iconv_t cd = iconv_open("","");
-         iconv(cd,NULL,NULL,NULL,NULL);
-         iconv_close(cd);],
-        am_cv_lib_iconv=yes
-        am_cv_func_iconv=yes)
-      LIBS="$am_save_LIBS"
-      CPPFLAGS="$am_save_CPPFLAGS"
-    fi
-  ])
+dnl For GDB_AC_PTRACE.
+m4_include(../gdbsupport/ptrace.m4)
 
-  # Set the various flags based on the cache variables.  We can't rely
-  # on the flags to remain set from the above code, due to caching.
-  LIBICONV=
-  if test "$am_cv_lib_iconv" = yes; then
-    LIBICONV="-liconv"
-  else
-    LIBICONV_LIBDIR=
-    LIBICONV_INCLUDE=
-  fi
-  if test "$am_cv_use_build_libiconv" = yes; then
-    LIBICONV="$am_cv_build_libiconv_path"
-    LIBICONV_LIBDIR=""
-    LIBICONV_INCLUDE="$BUILD_LIBICONV_INCLUDE"
-  fi
-  CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
-  LIBS="$LIBS $LIBICONV_LIBDIR $LIBICONV"
-
-  if test "$am_cv_func_iconv" = yes; then
-    AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
-    AC_MSG_CHECKING([for iconv declaration])
-    AC_CACHE_VAL(am_cv_proto_iconv, [
-      AC_TRY_COMPILE([
-#include <stdlib.h>
-#include <iconv.h>
-extern
-#ifdef __cplusplus
-"C"
-#endif
-#if defined(__STDC__) || defined(__cplusplus)
-size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
-#else
-size_t iconv();
-#endif
-], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
-      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
-    am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
-    AC_MSG_RESULT([$]{ac_t:-
-         }[$]am_cv_proto_iconv)
-    AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
-      [Define as const if the declaration of iconv() needs const.])
-  fi
-])
+m4_include(ax_cxx_compile_stdcxx.m4)
 
 dnl written by Guido Draheim <guidod@gmx.de>, original by Alexandre Oliva 
 dnl Version 1.3 (2001/03/02)
@@ -307,13 +71,22 @@ dnl to use a different cache variable name in this macro if it is invoked
 dnl in a different context somewhere else.
 dnl gcc_AC_CHECK_DECL(SYMBOL,
 dnl    [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
-AC_DEFUN([gcc_AC_CHECK_DECL],
-[AC_MSG_CHECKING([whether $1 is declared])
-AC_CACHE_VAL(gcc_cv_have_decl_$1,
-[AC_TRY_COMPILE([$4],
-[#ifndef $1
-char *(*pfn) = (char *(*)) $1 ;
-#endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
+AC_DEFUN(
+  [gcc_AC_CHECK_DECL],
+  [AC_MSG_CHECKING([whether $1 is declared])
+   AC_CACHE_VAL(
+     [gcc_cv_have_decl_$1],
+     [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [$4],
+          [#ifndef $1
+           char *(*pfn) = (char *(*)) $1 ;
+           #endif]
+        )],
+       [eval "gcc_cv_have_decl_$1=yes"],
+       [eval "gcc_cv_have_decl_$1=no"]
+      )]
+   )
 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
 else
@@ -368,7 +141,7 @@ AC_DEFUN([CY_AC_TCL_PRIVATE_HEADERS], [
   fi
 
   if test x"${private_dir}" = x; then
-    AC_ERROR(could not find private Tcl headers)
+    AC_MSG_ERROR(could not find private Tcl headers)
   else
     TCL_PRIVATE_INCLUDE="-I${private_dir}"
     AC_MSG_RESULT(${private_dir})
@@ -389,7 +162,7 @@ AC_DEFUN([CY_AC_TK_PRIVATE_HEADERS], [
   fi
 
   if test x"${private_dir}" = x; then
-    AC_ERROR(could not find Tk private headers)
+    AC_MSG_ERROR(could not find Tk private headers)
   else
     TK_PRIVATE_INCLUDE="-I${private_dir}"
     AC_MSG_RESULT(${private_dir})
@@ -456,20 +229,97 @@ AC_DEFUN([GDB_AC_CHECK_BFD], [
   # points somewhere with bfd, with -I/foo/lib and -L/foo/lib.  We
   # always want our bfd.
   CFLAGS="-I${srcdir}/../include -I../bfd -I${srcdir}/../bfd $CFLAGS"
-  LDFLAGS="-L../bfd -L../libiberty $LDFLAGS"
+  ZLIBDIR=`echo $zlibdir | sed 's,\$(top_builddir)/,,g'`
+  LDFLAGS="-L../bfd -L../libiberty $ZLIBDIR $LDFLAGS"
   intl=`echo $LIBINTL | sed 's,${top_builddir}/,,g'`
-  # -ldl is provided by bfd/Makfile.am (LIBDL) <PLUGINS>.
-  if test "$plugins" = "yes"; then
-    AC_SEARCH_LIBS(dlopen, dl)
-  fi
-  LIBS="-lbfd -liberty $intl $LIBS"
-  AC_CACHE_CHECK([$1], [$2],
-  [AC_TRY_LINK(
-  [#include <stdlib.h>
-  #include "bfd.h"
-  #include "$4"
-  ],
-  [return $3;], [[$2]=yes], [[$2]=no])])
+  LIBS="-lbfd -liberty -lz $intl $LIBS"
+  AC_CACHE_CHECK(
+    [$1],
+    [$2],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+         [#include <stdlib.h>
+          #include <string.h>
+          #include "bfd.h"
+          #include "$4"],
+         [return $3;]
+       )],
+       [[$2]=yes],
+       [[$2]=no]
+     )]
+  )
   CFLAGS=$OLD_CFLAGS
   LDFLAGS=$OLD_LDFLAGS
   LIBS=$OLD_LIBS])
+
+dnl GDB_GUILE_PROGRAM_NAMES([PKG-CONFIG], [VERSION])
+dnl
+dnl Define and substitute 'GUILD' to contain the absolute file name of
+dnl the 'guild' command for VERSION, using PKG-CONFIG.  (This is
+dnl similar to Guile's 'GUILE_PROGS' macro.)
+AC_DEFUN([GDB_GUILE_PROGRAM_NAMES], [
+  AC_CACHE_CHECK([for the absolute file name of the 'guild' command],
+    [ac_cv_guild_program_name],
+    [ac_cv_guild_program_name="`$1 --variable guild $2`"
+
+     # In Guile up to 2.0.11 included, guile-2.0.pc would not define
+     # the 'guild' and 'bindir' variables.  In that case, try to guess
+     # what the program name is, at the risk of getting it wrong if
+     # Guile was configured with '--program-suffix' or similar.
+     if test "x$ac_cv_guild_program_name" = "x"; then
+       guile_exec_prefix="`$1 --variable exec_prefix $2`"
+       ac_cv_guild_program_name="$guile_exec_prefix/bin/guild"
+     fi
+  ])
+
+  if ! "$ac_cv_guild_program_name" --version >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
+    AC_MSG_ERROR(['$ac_cv_guild_program_name' appears to be unusable])
+  fi
+
+  GUILD="$ac_cv_guild_program_name"
+  AC_SUBST([GUILD])
+])
+
+dnl GDB_GUILD_TARGET_FLAG
+dnl
+dnl Compute the value of GUILD_TARGET_FLAG.
+dnl For native builds this is empty.
+dnl For cross builds this is --target=<host>.
+AC_DEFUN([GDB_GUILD_TARGET_FLAG], [
+  if test "$cross_compiling" = no; then
+    GUILD_TARGET_FLAG=
+  else
+    GUILD_TARGET_FLAG="--target=$host"
+  fi
+  AC_SUBST(GUILD_TARGET_FLAG)
+])
+
+dnl GDB_TRY_GUILD([SRC-FILE])
+dnl
+dnl We precompile the .scm files and install them with gdb, so make sure
+dnl guild works for this host.
+dnl The .scm files are precompiled for several reasons:
+dnl 1) To silence Guile during gdb startup (Guile's auto-compilation output
+dnl    is unnecessarily verbose).
+dnl 2) Make gdb developers see compilation errors/warnings during the build,
+dnl    and not leave it to later when the user runs gdb.
+dnl 3) As a convenience for the user, so that one copy of the files is built
+dnl    instead of one copy per user.
+dnl
+dnl Make sure guild can handle this host by trying to compile SRC-FILE, and
+dnl setting ac_cv_guild_ok to yes or no.
+dnl Note that guild can handle cross-compilation.
+dnl It could happen that guild can't handle the host, but guile would still
+dnl work.  For the time being we're conservative, and if guild doesn't work
+dnl we punt.
+AC_DEFUN([GDB_TRY_GUILD], [
+  AC_REQUIRE([GDB_GUILD_TARGET_FLAG])
+  AC_CACHE_CHECK([whether guild supports this host],
+    [ac_cv_guild_ok],
+    [echo "$ac_cv_guild_program_name compile $GUILD_TARGET_FLAG -o conftest.go $1" >&AS_MESSAGE_LOG_FD
+     if "$ac_cv_guild_program_name" compile $GUILD_TARGET_FLAG -o conftest.go "$1" >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
+       ac_cv_guild_ok=yes
+     else
+       ac_cv_guild_ok=no
+     fi])
+])
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