[patch] GCC configure.in cleanup 5/n

[Nathanael Nerode]

More sorting.  Enough passes of this and it'll be in some kind of order.
Tested on i686-pc-linux-gnu.

	* configure.in: Rearrange.
	* configure: Regenerate.

--- configure.in.old	2003-03-06 15:26:34.000000000 -0500
+++ configure.in	2003-03-06 15:40:48.000000000 -0500
@@ -227,6 +227,10 @@
 AC_SUBST(NO_MINUS_C_MINUS_O)
 AC_SUBST(OUTPUT_OPTION)
 
+# -------------------------
+# Check C compiler features
+# -------------------------
+
 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
 ac_cv_prog_cc_no_long_long,
 [save_CFLAGS="$CFLAGS"
@@ -439,9 +443,9 @@
 [coverage_flags=""])
 AC_SUBST(coverage_flags)
 
-# --------
-# UNSORTED
-# --------
+# -------------------------------
+# Miscenalleous configure options
+# -------------------------------
 
 # With stabs
 AC_ARG_WITH(stabs,
@@ -581,43 +585,12 @@
 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
 
-# Stage specific cflags for build.
-stage1_cflags=
-case $build in
-vax-*-*)
-  if test x$GCC = xyes
-  then
-    stage1_cflags="-Wa,-J"
-  else
-    stage1_cflags="-J"
-  fi
-  ;;
-powerpc-*-darwin*)
-  # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
-  # sources; use -no-cpp-precomp to get to GNU cpp.
-  # Apple's GCC has bugs in designated initializer handling, so disable
-  # that too.
-  stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
-  ;;
-esac
-AC_SUBST(stage1_cflags)
+# -------------------------
+# Checks for other programs
+# -------------------------
 
 AC_PROG_MAKE_SET
 
-AC_MSG_CHECKING(for GNU C library)
-AC_CACHE_VAL(gcc_cv_glibc,
-[AC_TRY_COMPILE(
-  [#include <features.h>],[
-#if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
-#error Not a GNU C library system
-#endif], 
-  [gcc_cv_glibc=yes], 
-  gcc_cv_glibc=no)])
-AC_MSG_RESULT($gcc_cv_glibc)
-if test $gcc_cv_glibc = yes; then
-  AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
-fi
-
 # Find some useful tools
 AC_PROG_AWK
 gcc_AC_PROG_LN
@@ -625,25 +598,6 @@
 AC_PROG_RANLIB
 gcc_AC_PROG_INSTALL
 
-AC_HEADER_STDC
-AC_HEADER_TIME
-gcc_AC_HEADER_STDBOOL
-gcc_AC_HEADER_STRING
-AC_HEADER_SYS_WAIT
-AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
-		 fcntl.h unistd.h sys/file.h sys/time.h \
-		 sys/resource.h sys/param.h sys/times.h sys/stat.h \
-		 direct.h malloc.h langinfo.h ldfcn.h)
-
-# Check for thread headers.
-AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
-AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
-
-# These tests can't be done till we know if we have limits.h.
-gcc_AC_C_CHAR_BIT
-AC_C_BIGENDIAN_CROSS
-gcc_AC_C_FLOAT_FORMAT
-
 # See if we have the mktemp command.
 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 
@@ -696,6 +650,68 @@
   AC_CHECK_PROG(BISON, bison, bison, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison)
 fi
 
+# --------------------
+# Checks for C headers
+# --------------------
+
+AC_MSG_CHECKING(for GNU C library)
+AC_CACHE_VAL(gcc_cv_glibc,
+[AC_TRY_COMPILE(
+  [#include <features.h>],[
+#if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
+#error Not a GNU C library system
+#endif], 
+  [gcc_cv_glibc=yes], 
+  gcc_cv_glibc=no)])
+AC_MSG_RESULT($gcc_cv_glibc)
+if test $gcc_cv_glibc = yes; then
+  AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
+fi
+
+AC_HEADER_STDC
+AC_HEADER_TIME
+gcc_AC_HEADER_STDBOOL
+gcc_AC_HEADER_STRING
+AC_HEADER_SYS_WAIT
+AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
+		 fcntl.h unistd.h sys/file.h sys/time.h \
+		 sys/resource.h sys/param.h sys/times.h sys/stat.h \
+		 direct.h malloc.h langinfo.h ldfcn.h)
+
+# Check for thread headers.
+AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
+AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
+
+# These tests can't be done till we know if we have limits.h.
+gcc_AC_C_CHAR_BIT
+AC_C_BIGENDIAN_CROSS
+gcc_AC_C_FLOAT_FORMAT
+
+# --------
+# UNSORTED
+# --------
+
+# Stage specific cflags for build.
+stage1_cflags=
+case $build in
+vax-*-*)
+  if test x$GCC = xyes
+  then
+    stage1_cflags="-Wa,-J"
+  else
+    stage1_cflags="-J"
+  fi
+  ;;
+powerpc-*-darwin*)
+  # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
+  # sources; use -no-cpp-precomp to get to GNU cpp.
+  # Apple's GCC has bugs in designated initializer handling, so disable
+  # that too.
+  stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
+  ;;
+esac
+AC_SUBST(stage1_cflags)
+
 # These libraries may be used by collect2.
 # We may need a special search path to get them linked.
 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,