Copyright year update in most files of the GDB Project.
[deliverable/binutils-gdb.git] / gdb / configure.ac
index e2bf45a588d9abc6afc767c4d95ec3033834869c..7db7675e238faee3914664631f0eb32f5d80c22e 100644 (file)
@@ -1,7 +1,5 @@
 dnl Autoconf configure script for GDB, the GNU debugger.
-dnl Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-dnl 2005, 2006, 2007, 2008, 2009, 2010
-dnl Free Software Foundation, Inc.
+dnl Copyright (C) 1995-2012 Free Software Foundation, Inc.
 dnl
 dnl This file is part of GDB.
 dnl 
@@ -87,6 +85,38 @@ PACKAGE=gdb
 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of this package. ])
 AC_SUBST(PACKAGE)
 
+# Do we have a single-tree copy of texinfo?  Even if we do, we can't
+# rely on it - libiberty is built before texinfo.
+AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
+if test "x$MAKEINFO" = "x"; then
+  AC_ERROR([makeinfo is required for compilation])
+else
+  case "$MAKEINFO" in
+    */missing\ makeinfo*)
+      AC_ERROR([makeinfo is required for compilation])
+      ;;
+  esac
+fi
+AC_SUBST(MAKEINFO)
+
+# --split-size=5000000 may be already in $MAKEINFO from parent configure.
+# Re-running configure in gdb/ would lose it so ensure it stays present.
+MAKEINFOFLAGS=${MAKEINFOFLAGS---split-size=5000000}
+AC_SUBST(MAKEINFOFLAGS)
+
+MAKEINFO_EXTRA_FLAGS=""
+AC_CACHE_CHECK([whether $MAKEINFO supports @click], gdb_cv_have_makeinfo_click,
+  [echo '@clicksequence{a @click{} b}' >conftest.texinfo
+  if eval "$MAKEINFO conftest.texinfo >&5 2>&5"; then
+    gdb_cv_have_makeinfo_click=yes
+  else
+    gdb_cv_have_makeinfo_click=no
+  fi])
+if test x"$gdb_cv_have_makeinfo_click" = xyes; then
+  MAKEINFO_EXTRA_FLAGS="$MAKEINFO_EXTRA_FLAGS -DHAVE_MAKEINFO_CLICK"
+fi
+AC_SUBST(MAKEINFO_EXTRA_FLAGS)
+
 # GDB does not use automake, but gnulib does.  This line lets us
 # generate its Makefile.in.
 AM_INIT_AUTOMAKE(gdb, UNUSED-VERSION, [no-define])
@@ -433,6 +463,29 @@ AC_SEARCH_LIBS(dlgetmodinfo, [dl xpdl])
 
 AM_ICONV
 
+# GDB may fork/exec the iconv program to get the list of supported character
+# sets.  Allow the user to specify where to find it.
+# There are several factors affecting the choice of option name:
+# - There is already --with-libiconv-prefix but we can't use it, it specifies
+#   the build-time location of libiconv files.
+# - The program we need to find is iconv, which comes with glibc.  The user
+#   doesn't necessarily have libiconv installed.  Therefore naming this
+#   --with-libiconv-foo feels wrong.
+# - We want the path to be relocatable, but GDB_AC_DEFINE_RELOCATABLE is
+#   defined to work on directories not files (though it really doesn't know
+#   the difference).
+# - Calling this --with-iconv-prefix is perceived to cause too much confusion
+#   with --with-libiconv-prefix.
+# Putting these together is why the option name is --with-iconv-bin.
+
+AC_ARG_WITH(iconv-bin,
+AS_HELP_STRING([--with-iconv-bin=PATH], [specify where to find the iconv program]),
+[iconv_bin="${withval}"
+ AC_DEFINE_UNQUOTED([ICONV_BIN], ["${iconv_bin}"],
+                    [Path of directory of iconv program.])
+ GDB_AC_DEFINE_RELOCATABLE(ICONV_BIN, iconv, ${iconv_bin})
+])
+
 # On alpha-osf, it appears that libtermcap and libcurses are not compatible.
 # There is a very specific comment in /usr/include/curses.h explaining that
 # termcap routines built into libcurses must not be used.
@@ -490,10 +543,6 @@ if test x"$enable_tui" != xno; then
       CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_TUI_DEPS)"
       CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_TUI_SRCS)"
       ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_TUI_CFLAGS)"
-      CONFIG_ALL="${CONFIG_ALL} all-tui"
-      CONFIG_CLEAN="${CONFIG_CLEAN} clean-tui"
-      CONFIG_INSTALL="${CONFIG_INSTALL} install-tui"
-      CONFIG_UNINSTALL="${CONFIG_UNINSTALL} uninstall-tui"
     else
       if test x"$enable_tui" = xyes; then
        AC_MSG_ERROR([no enhanced curses library found; disable TUI])
@@ -539,21 +588,6 @@ if test "$with_system_readline" = yes; then
   READLINE_DEPS=
   READLINE_CFLAGS=
   READLINE_TEXI_INCFLAG=
-
-  # readline-6.0 started to use the name `_rl_echoing_p'.
-  # `$(READLINE_DIR)/' of bundled readline would not resolve in configure.
-
-  AC_MSG_CHECKING([for readline_echoing_p])
-  save_LIBS=$LIBS
-  LIBS="$LIBS $READLINE"
-  AC_LINK_IFELSE(AC_LANG_PROGRAM(,[[extern int readline_echoing_p;
-                                   return readline_echoing_p;]]),
-                [READLINE_ECHOING_P=yes],
-                [READLINE_ECHOING_P=no
-                 AC_DEFINE([readline_echoing_p], [_rl_echoing_p],
-                           [readline-6.0 started to use different name.])])
-  LIBS="$save_LIBS"
-  AC_MSG_RESULT([$READLINE_ECHOING_P])
 else
   READLINE='$(READLINE_DIR)/libreadline.a'
   READLINE_DEPS='$(READLINE)'
@@ -565,6 +599,34 @@ AC_SUBST(READLINE_DEPS)
 AC_SUBST(READLINE_CFLAGS)
 AC_SUBST(READLINE_TEXI_INCFLAG)
 
+# Generate jit-reader.h
+
+# This is typedeffed to GDB_CORE_ADDR in jit-reader.h
+TARGET_PTR=
+
+AC_CHECK_SIZEOF(unsigned long long)
+AC_CHECK_SIZEOF(unsigned long)
+AC_CHECK_SIZEOF(unsigned __int128)
+
+if test "x${ac_cv_sizeof_unsigned_long}" = "x8"; then
+  TARGET_PTR="unsigned long"
+elif test "x${ac_cv_sizeof_unsigned_long_long}" = "x8"; then
+  TARGET_PTR="unsigned long long"
+elif test "x${ac_cv_sizeof_unsigned___int128}" = "x16"; then
+  TARGET_PTR="unsigned __int128"
+else
+  TARGET_PTR="unsigned long"
+fi
+
+AC_SUBST(TARGET_PTR)
+AC_CONFIG_FILES([jit-reader.h:jit-reader.in])
+
+AC_SEARCH_LIBS(dlopen, dl)
+
+GDB_AC_WITH_DIR([JIT_READER_DIR], [jit-reader-dir],
+                [directory to load the JIT readers from],
+                [${libdir}/gdb])
+
 AC_ARG_WITH(expat,
   AS_HELP_STRING([--with-expat], [include expat support (auto/yes/no)]),
   [], [with_expat=auto])
@@ -610,12 +672,14 @@ AC_DEFUN([AC_TRY_LIBPYTHON],
   CPPFLAGS="$CPPFLAGS $new_CPPFLAGS"
   LIBS="$LIBS $new_LIBS"
   found_usable_python=no
-  AC_LINK_IFELSE(AC_LANG_PROGRAM([[#include "${version}/Python.h"]],
+  AC_LINK_IFELSE(AC_LANG_PROGRAM([[#include "Python.h"]],
                                  [[Py_Initialize ();]]),
                  [have_libpython_var=${version}
-                  found_usable_python=yes],
-                 [CPPFLAGS=$save_CPPFLAGS
-                  LIBS=$save_LIBS])
+                  found_usable_python=yes
+                  PYTHON_CPPFLAGS=$new_CPPFLAGS
+                  PYTHON_LIBS=$new_LIBS])
+  CPPFLAGS=$save_CPPFLAGS
+  LIBS=$save_LIBS
   AC_MSG_RESULT([${found_usable_python}])
 ])
 
@@ -667,6 +731,13 @@ else
       # Assume the python binary is ${with_python}/bin/python.
       python_prog="${with_python}/bin/python"
       python_prefix=
+      # If python does not exit ${with_python}/bin, then try in
+      # ${with_python}.  On Windows/MinGW, this is where the Python
+      # executable is.
+      if test ! -x "${python_prog}"; then
+        python_prog="${with_python}/python"
+        python_prefix=
+      fi
       if test ! -x "${python_prog}"; then
         # Fall back to gdb 7.0/7.1 behaviour.
         python_prog=missing
@@ -744,34 +815,39 @@ else
       fi
     fi
   else
-    # Fall back to gdb 7.0/7.1 behaviour.
-    if test -z ${python_prefix}; then
-      python_includes=
-      python_libs=
-    else
-      python_includes="-I${python_prefix}/include"
-      python_libs="-L${python_prefix}/lib"
-    fi
+    # We do not have a python executable we can use to determine where
+    # to find the Python headers and libs.  We cannot guess the include
+    # path from the python_prefix either, because that include path
+    # depends on the Python version.  So, there is nothing much we can
+    # do except assume that the compiler will be able to find those files.
+    python_includes=
+    python_libs=
     have_python_config=no
   fi
 
-  # Having "/pythonX.Y" in the include path is awkward.
-  # All those python headers get bubbled up to the top inviting lots
-  # of random collisions.  GDB originally didn't use python-config to
-  # find the compilation parameters and includes "pythonX.Y/" in the
-  # path of the, umm, include file.  So strip away this part of the
-  # output of python-config --includes.
-  python_includes=`echo "${python_includes} " \
-                        | sed -e 's,/python[[0-9]]*[[.]][[0-9]]* , ,g'`
-
   # If we have python-config, only try the configuration it provides.
   # Otherwise fallback on the old way of trying different versions of
   # python in turn.
 
   have_libpython=no
   if test "${have_python_config}" = yes; then
+    # Determine the Python version by extracting "-lpython<version>"
+    # part of the python_libs. <version> is usually X.Y with X and Y
+    # being decimal numbers, but can also be XY (seen on Windows).
+    #
+    # The extraction is performed using sed with a regular expression.
+    # Initially, the regexp used was using the '?' quantifier to make
+    # the dot in the version number optional.  Unfortunately, this
+    # does not work with non-GNU versions of sed because, because of
+    # what looks like a limitation (the '?' quantifier does not work
+    # with back-references).  We work around this limitation by using
+    # the '*' quantifier instead.  It means that, in theory, we might
+    # match unexpected version strings such as "-lpython2..7", but
+    # this seems unlikely in practice.  And even if that happens,
+    # an error will be triggered later on, when checking that version
+    # number.
     python_version=`echo " ${python_libs} " \
-                         | sed -e 's,^.* -l\(python[[0-9]]*[[.]][[0-9]]*\) .*$,\1,'`
+                         | sed -e 's,^.* -l\(python[[0-9]]*[[.]]*[[0-9]]*\).*$,\1,'`
     case "${python_version}" in
     python*)
       AC_TRY_LIBPYTHON(${python_version}, have_libpython,
@@ -799,13 +875,13 @@ else
                        ${python_includes}, "${python_libs} -lpython2.4")
     fi
   fi
-  if test "${have_libpython}" = python2.7; then
+  if test "${have_libpython}" = python2.7 -o "${have_libpython}" = python27; then
     AC_DEFINE(HAVE_LIBPYTHON2_7, 1, [Define if Python 2.7 is being used.])
-  elif test "${have_libpython}" = python2.6; then
+  elif test "${have_libpython}" = python2.6 -o "${have_libpython}" = python26; then
     AC_DEFINE(HAVE_LIBPYTHON2_6, 1, [Define if Python 2.6 is being used.])
-  elif test "${have_libpython}" = python2.5; then
+  elif test "${have_libpython}" = python2.5 -o "${have_libpython}" = python25; then
     AC_DEFINE(HAVE_LIBPYTHON2_5, 1, [Define if Python 2.5 is being used.])
-  elif test "${have_libpython}" = python2.4; then
+  elif test "${have_libpython}" = python2.4 -o "${have_libpython}" = python24; then
     AC_DEFINE(HAVE_LIBPYTHON2_4, 1, [Define if Python 2.4 is being used.])
   fi
 
@@ -881,6 +957,8 @@ else
        python/py-prettyprint.c python/py-auto-load.c"
 fi
 AC_SUBST(PYTHON_CFLAGS)
+AC_SUBST(PYTHON_CPPFLAGS)
+AC_SUBST(PYTHON_LIBS)
 
 # ------------------------- #
 # Checks for header files.  #
@@ -899,7 +977,8 @@ AC_CHECK_HEADERS([nlist.h machine/reg.h poll.h sys/poll.h proc_service.h \
                  sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \
                  sys/reg.h sys/debugreg.h sys/select.h sys/syscall.h \
                  sys/types.h sys/wait.h wait.h termios.h termio.h \
-                 sgtty.h unistd.h elf_hp.h ctype.h time.h locale.h])
+                 sgtty.h unistd.h elf_hp.h ctype.h time.h locale.h \
+                 dlfcn.h])
 AC_CHECK_HEADERS(link.h, [], [],
 [#if HAVE_SYS_TYPES_H
 # include <sys/types.h>
@@ -1528,22 +1607,6 @@ dnl and not doing a canadian cross build (build == host).
 
 if test ${build} = ${host} -a ${host} = ${target} ; then
    case ${host_os} in
-   hpux*)
-      AC_MSG_CHECKING(for HPUX/OSF thread support)
-      if test -f /usr/include/dce/cma_config.h ; then
-         if test "$GCC" = "yes" ; then
-            AC_MSG_RESULT(yes)
-            AC_DEFINE(HAVE_HPUX_THREAD_SUPPORT, 1,
-           [Define if you have HPUX threads])
-            CONFIG_OBS="${CONFIG_OBS} hpux-thread.o"
-            CONFIG_SRCS="${CONFIG_SRCS} hpux-thread.c"
-         else
-            AC_MSG_RESULT(no (suppressed because you are not using GCC))
-         fi
-      else
-         AC_MSG_RESULT(no)
-      fi
-      ;;
    solaris*)
       # See if thread_db library is around for Solaris thread debugging.
       # Note that we must explicitly test for version 1 of the library
@@ -1593,6 +1656,11 @@ if test ${build} = ${host} -a ${host} = ${target} ; then
          CONFIG_SRCS="${CONFIG_SRCS} aix-thread.c"
          CONFIG_OBS="${CONFIG_OBS} aix-thread.o"
          CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -lpthdebug"
+
+         # Older versions of AIX do not provide the declaration for
+         # the getthrds function (it appears that it was introduced
+         # with AIX 6.x).
+         AC_CHECK_DECLS(getthrds, [], [], [[#include <procinfo.h>]])
       fi
       ;;
    esac
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