configure.ac: Rearrange some threading code for clarity; add section comment.

	* configure.ac: Rearrange some threading code for clarity;
	add section comment.
	* configure: Regenerate.

From-SVN: r78678

3 files changed, 72 insertions, 35 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f3a3a5c..8334508 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2004-02-29  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	* configure.ac: Rearrange some threading code for clarity;
+	add section comment.
+	* configure: Regenerate.
+
 2004-02-29  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* passes.c, config/frv/frv.c, config/sh/sh.c: Fix comment
diff --git a/gcc/configure b/gcc/configure
index e45b12a..6d0f01b 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -308,7 +308,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os build_subdir host_subdir target_subdir GENINSRC CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT NO_MINUS_C_MINUS_O OUTPUT_OPTION CPP GNATBIND ac_ct_GNATBIND strict1_warn warn_cflags WERROR nocommon_flag EGREP valgrind_path valgrind_path_defines valgrind_command coverage_flags enable_multilib enable_shared TARGET_SYSTEM_ROOT TARGET_SYSTEM_ROOT_DEFINE CROSS_SYSTEM_HEADER_DIR onestep SET_MAKE AWK LN LN_S RANLIB ac_ct_RANLIB INSTALL INSTALL_PROGRAM INSTALL_DATA make_compare_target have_mktemp_command MAKEINFO BUILD_INFO GENERATED_MANPAGES FLEX BISON stage1_cflags COLLECT2_LIBS GNAT_LIBEXC LDEXP_LIB TARGET_GETGROUPS_T LIBICONV LIBICONV_DEP manext objext extra_modes_file FORBUILD PACKAGE VERSION USE_NLS LIBINTL LIBINTL_DEP INCINTL XGETTEXT GMSGFMT POSUB CATALOGS CROSS ALL SYSTEM_HEADER_DIR inhibit_libc BUILD_PREFIX BUILD_PREFIX_1 CC_FOR_BUILD BUILD_CFLAGS STMP_FIXINC STMP_FIXPROTO libgcc_visibility gthread_flags GGC zlibdir zlibinc MAINT gcc_tooldir dollar slibdir objdir subdirs srcdir all_boot_languages all_compilers all_gtfiles all_gtfiles_files_langs all_gtfiles_files_files all_lang_makefrags all_lang_makefiles all_languages all_stagestuff build_exeext build_install_headers_dir build_xm_file_list build_xm_include_list build_xm_defines check_languages cc_set_by_configure quoted_cc_set_by_configure cpp_install_dir xmake_file tmake_file extra_gcc_objs extra_headers_list extra_objs extra_parts extra_passes extra_programs float_h_file gcc_config_arguments gcc_gxx_include_dir libstdcxx_incdir gcc_version gcc_version_full gcc_version_trigger host_exeext host_xm_file_list host_xm_include_list host_xm_defines out_host_hook_obj install lang_opt_files lang_specs_files lang_tree_files local_prefix md_file objc_boehm_gc out_file out_object_file stage_prefix_set_by_configure quoted_stage_prefix_set_by_configure symbolic_link thread_file tm_file_list tm_include_list tm_defines tm_p_file_list tm_p_include_list xm_file_list xm_include_list xm_defines target_noncanonical c_target_objs cxx_target_objs target_cpu_default LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os build_subdir host_subdir target_subdir GENINSRC CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT NO_MINUS_C_MINUS_O OUTPUT_OPTION CPP GNATBIND ac_ct_GNATBIND strict1_warn warn_cflags WERROR nocommon_flag EGREP valgrind_path valgrind_path_defines valgrind_command coverage_flags enable_multilib enable_shared TARGET_SYSTEM_ROOT TARGET_SYSTEM_ROOT_DEFINE CROSS_SYSTEM_HEADER_DIR onestep SET_MAKE AWK LN LN_S RANLIB ac_ct_RANLIB INSTALL INSTALL_PROGRAM INSTALL_DATA make_compare_target have_mktemp_command MAKEINFO BUILD_INFO GENERATED_MANPAGES FLEX BISON stage1_cflags COLLECT2_LIBS GNAT_LIBEXC LDEXP_LIB TARGET_GETGROUPS_T LIBICONV LIBICONV_DEP manext objext gthread_flags extra_modes_file FORBUILD PACKAGE VERSION USE_NLS LIBINTL LIBINTL_DEP INCINTL XGETTEXT GMSGFMT POSUB CATALOGS CROSS ALL SYSTEM_HEADER_DIR inhibit_libc BUILD_PREFIX BUILD_PREFIX_1 CC_FOR_BUILD BUILD_CFLAGS STMP_FIXINC STMP_FIXPROTO libgcc_visibility GGC zlibdir zlibinc MAINT gcc_tooldir dollar slibdir objdir subdirs srcdir all_boot_languages all_compilers all_gtfiles all_gtfiles_files_langs all_gtfiles_files_files all_lang_makefrags all_lang_makefiles all_languages all_stagestuff build_exeext build_install_headers_dir build_xm_file_list build_xm_include_list build_xm_defines check_languages cc_set_by_configure quoted_cc_set_by_configure cpp_install_dir xmake_file tmake_file extra_gcc_objs extra_headers_list extra_objs extra_parts extra_passes extra_programs float_h_file gcc_config_arguments gcc_gxx_include_dir libstdcxx_incdir gcc_version gcc_version_full gcc_version_trigger host_exeext host_xm_file_list host_xm_include_list host_xm_defines out_host_hook_obj install lang_opt_files lang_specs_files lang_tree_files local_prefix md_file objc_boehm_gc out_file out_object_file stage_prefix_set_by_configure quoted_stage_prefix_set_by_configure symbolic_link thread_file tm_file_list tm_include_list tm_defines tm_p_file_list tm_p_include_list xm_file_list xm_include_list xm_defines target_noncanonical c_target_objs cxx_target_objs target_cpu_default LIBOBJS LTLIBOBJS'
 ac_subst_files='language_hooks'
 
 # Initialize some variables set by options.
@@ -981,7 +981,7 @@ ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
     else
       echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
     fi
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
@@ -1178,7 +1178,7 @@ _ASBOX
       echo "$as_me: caught signal $ac_signal"
     echo "$as_me: exit $exit_status"
   } >&5
-  rm -f core core.* *.core &&
+  rm -f core *.core &&
   rm -rf conftest* confdefs* conf$$* $ac_clean_files &&
     exit $exit_status
      ' 0
@@ -2517,8 +2517,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
   for ac_declaration in \
-   ''\
-   '#include <stdlib.h>' \
+   '' \
    'extern "C" void std::exit (int) throw (); using std::exit;' \
    'extern "C" void std::exit (int); using std::exit;' \
    'extern "C" void exit (int) throw ();' \
@@ -2532,8 +2531,8 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
 $ac_declaration
+#include <stdlib.h>
 int
 main ()
 {
@@ -4008,7 +4007,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 ac_cv_header_stdc=no
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 fi
 fi
@@ -5006,7 +5005,7 @@ if test "${gcc_cv_prog_makeinfo_modern+set}" = set; then
 else
     ac_prog_version=`$MAKEINFO --version 2>&1 |
                    sed -n 's/^.*GNU texinfo.* \([0-9][0-9.]*\).*$/\1/p'`
-  echo "configure:5009: version of makeinfo is $ac_prog_version" >&5
+  echo "configure:5008: version of makeinfo is $ac_prog_version" >&5
   case $ac_prog_version in
     '')     gcc_cv_prog_makeinfo_modern=no;;
     4.[2-9]*)
@@ -5344,7 +5343,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 ac_cv_header_stdc=no
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 fi
 fi
@@ -5983,7 +5982,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 ac_cv_c_bigendian=yes
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 fi
 fi
@@ -6582,7 +6581,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 gcc_cv_func_mbstowcs_works=no
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 fi
 echo "$as_me:$LINENO: result: $gcc_cv_func_mbstowcs_works" >&5
@@ -6753,7 +6752,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 ac_cv_type_getgroups=int
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 if test $ac_cv_type_getgroups = cross; then
         cat >conftest.$ac_ext <<_ACEOF
@@ -6847,7 +6846,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 gcc_cv_func_printf_ptr=no
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 rm -f core core.* *.core
 fi
@@ -7260,7 +7259,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 ac_cv_func_fork_works=no
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_fork_works" >&5
@@ -7415,7 +7414,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 ac_cv_func_vfork_works=no
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_vfork_works" >&5
@@ -8444,7 +8443,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ( exit $ac_status )
 gcc_cv_initfini_array=no
 fi
-rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
 fi
 echo "$as_me:$LINENO: result: $gcc_cv_initfini_array" >&5
@@ -8746,6 +8745,10 @@ if test "$host_xm_file" != "$build_xm_file"; then
 	fi
 fi
 
+# ---------
+# Threading
+# ---------
+
 # Check if a valid thread package
 case ${enable_threads_flag} in
   "" | no)
@@ -8772,6 +8775,19 @@ if test x${thread_file} = x; then
   thread_file=${target_thread_file}
 fi
 
+# Make gthr-default.h if we have a thread file.
+gthread_flags=
+if test $thread_file != single; then
+  rm -f gthr-default.h
+  echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
+  gthread_flags=-DHAVE_GTHR_DEFAULT
+fi
+
+
+# --------
+# UNSORTED
+# --------
+
 if test x$enable___cxa_atexit = xyes || \
    test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
    echo "$as_me:$LINENO: checking for __cxa_atexit" >&5
@@ -9435,6 +9451,10 @@ case $use_collect2 in
     ;;
 esac
 
+# ---------------------------
+# Assembler & linker features
+# ---------------------------
+
 # Identify the assembler which will work hand-in-glove with the newly
 # built GCC, so that we can examine its features.  This is the assembler
 # which will be driven by the driver program.
@@ -11275,6 +11295,10 @@ fi
 echo "$as_me:$LINENO: result: $gcc_cv_ld_pie" >&5
 echo "${ECHO_T}$gcc_cv_ld_pie" >&6
 
+# --------
+# UNSORTED
+# --------
+
 if test x$with_sysroot = x && test x$host = x$target \
    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
 
@@ -11412,15 +11436,6 @@ The following languages were available: c${found_languages}" >&2;}
    { (exit 1); exit 1; }; }
 fi
 
-# Make gthr-default.h if we have a thread file.
-gthread_flags=
-if test $thread_file != single; then
-    rm -f gthr-default.h
-    echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
-    gthread_flags=-DHAVE_GTHR_DEFAULT
-fi
-
-
 # Find out what GC implementation we want, or may, use.
 
 # Check whether --with-gc or --without-gc was given.
@@ -11476,6 +11491,10 @@ else
   MAINT='#'
 fi
 
+# --------------
+# Language hooks
+# --------------
+
 # Make empty files to contain the specs and options for each language.
 # Then add #include lines to for a compiler that has specs and/or options.
 
@@ -11592,6 +11611,10 @@ do
 	echo "lang.$t: $x" >> Make-hooks
 done
 
+# --------
+# UNSORTED
+# --------
+
 # Create .gdbinit.
 
 echo "dir ." > .gdbinit
@@ -12468,6 +12491,7 @@ s,@LIBICONV@,$LIBICONV,;t t
 s,@LIBICONV_DEP@,$LIBICONV_DEP,;t t
 s,@manext@,$manext,;t t
 s,@objext@,$objext,;t t
+s,@gthread_flags@,$gthread_flags,;t t
 s,@extra_modes_file@,$extra_modes_file,;t t
 s,@FORBUILD@,$FORBUILD,;t t
 s,@PACKAGE@,$PACKAGE,;t t
@@ -12491,7 +12515,6 @@ s,@BUILD_CFLAGS@,$BUILD_CFLAGS,;t t
 s,@STMP_FIXINC@,$STMP_FIXINC,;t t
 s,@STMP_FIXPROTO@,$STMP_FIXPROTO,;t t
 s,@libgcc_visibility@,$libgcc_visibility,;t t
-s,@gthread_flags@,$gthread_flags,;t t
 s,@GGC@,$GGC,;t t
 s,@zlibdir@,$zlibdir,;t t
 s,@zlibinc@,$zlibinc,;t t
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 4e0d742..cee941c 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -1118,6 +1118,10 @@ if test "$host_xm_file" != "$build_xm_file"; then
 	fi
 fi
 
+# ---------
+# Threading
+# ---------
+
 # Check if a valid thread package
 case ${enable_threads_flag} in
   "" | no)
@@ -1144,6 +1148,19 @@ if test x${thread_file} = x; then
   thread_file=${target_thread_file}
 fi
 
+# Make gthr-default.h if we have a thread file.
+gthread_flags=
+if test $thread_file != single; then
+  rm -f gthr-default.h
+  echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
+  gthread_flags=-DHAVE_GTHR_DEFAULT
+fi
+AC_SUBST(gthread_flags)
+
+# --------
+# UNSORTED
+# --------
+
 if test x$enable___cxa_atexit = xyes || \
    test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
    AC_CHECK_FUNC(__cxa_atexit,
@@ -2761,15 +2778,6 @@ The following requested languages were not found:${missing_languages}
 The following languages were available: c${found_languages}])
 fi
 
-# Make gthr-default.h if we have a thread file.
-gthread_flags=
-if test $thread_file != single; then
-    rm -f gthr-default.h
-    echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
-    gthread_flags=-DHAVE_GTHR_DEFAULT
-fi
-AC_SUBST(gthread_flags)
-
 # Find out what GC implementation we want, or may, use.
 AC_ARG_WITH(gc,
 [  --with-gc={page,zone}   choose the garbage collection mechanism to use