X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fconfigure.ac;h=8a53d59326eb2be0f2bbef1f67e7dd1a4615eb93;hp=118d9b2a77bb53f9d0578caeaf82cec53cbe8a1b;hb=f1984c5732a8b17b8f085ed0befaeb2f443d001e;hpb=9c85a98a2b03f3bacaba6103c8112066d0d272bb

diff --git a/gcc/configure.ac b/gcc/configure.ac
index 118d9b2a77b..8a53d59326e 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -276,6 +276,8 @@ rm -f a.out a.exe b.out
 # Find the native compiler
 AC_PROG_CC
 AM_PROG_CC_C_O
+ACX_PROG_GNAT([-I"$srcdir"/ada])
+
 # autoconf is lame and doesn't give us any substitution variable for this.
 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
   NO_MINUS_C_MINUS_O=yes
@@ -297,6 +299,7 @@ AC_SUBST(CFLAGS)
 # Check C compiler features
 # -------------------------
 
+AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_CPP
 AC_C_INLINE
 
@@ -367,7 +370,7 @@ do
 			ac_gc_always_collect= ; ac_rtl_checking= ;
 			ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 			ac_tree_checking=1 ; ac_valgrind_checking= ;
-			ac_types_checking= ;;
+			ac_types_checking=1 ;;
 	no|none)	ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
 			ac_fold_checking= ; ac_gc_checking= ;
 			ac_gc_always_collect= ; ac_rtl_checking= ;
@@ -896,20 +899,6 @@ fi
 # Checks for C headers
 # --------------------
 
-AC_MSG_CHECKING(for GNU C library)
-AC_CACHE_VAL(gcc_cv_glibc,
-[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-  [[#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
-
 # Need to reject headers which give warnings, so that the -Werror bootstrap
 # works later. *sigh*  This needs to come before all header checks.
 AC_PROG_CPP_WERROR
@@ -1163,9 +1152,29 @@ AC_SUBST(objext)
 AC_ARG_ENABLE(sjlj-exceptions,
 [  --enable-sjlj-exceptions
                           arrange to use setjmp/longjmp exception handling],
-[sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
-AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
-  [Define 0/1 to force the choice for exception handling model.])])
+[case $target in
+  *-*-hpux10*)
+    if test $enableval != yes; then
+      AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
+      enableval=yes
+    fi
+    ;;
+esac
+force_sjlj_exceptions=yes],
+[case $target in
+  *-*-hpux10*)
+    force_sjlj_exceptions=yes
+    enableval=yes
+    ;;
+  *)
+    force_sjlj_exceptions=no
+    ;;
+esac])
+if test $force_sjlj_exceptions = yes; then
+  sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
+  AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
+    [Define 0/1 to force the choice for exception handling model.])
+fi
 
 # For platforms with the unwind ABI which includes an unwind library,
 # libunwind, we can choose to use the system libunwind.
@@ -1728,7 +1737,7 @@ fi
 # then define inhibit_libc in LIBGCC2_CFLAGS.
 # This prevents libgcc2 from containing any code which requires libc
 # support.
-inhibit_libc=false
+: ${inhibit_libc=false}
 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
        test x$with_newlib = xyes ; } &&
      { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
@@ -1807,6 +1816,21 @@ esac
 # Assembler & linker features
 # ---------------------------
 
+# During stage 2, ld is actually gcc/collect-ld, which is a small script to
+# discern between when to use prev-ld/ld-new and when to use ld/ld-new.
+# However when ld-new is first executed from the build tree, libtool will
+# relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
+# to the build tree.  While doing this we need to use the previous-stage
+# linker, or we have an infinite loop.  The presence of a shell script as
+# ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
+# the gcc/collect-ld script.  So we need to know how libtool works, or
+# exec-tool will fail.
+
+m4_defun([_LT_CONFIG_COMMANDS], [])
+AC_PROG_LIBTOOL
+AC_SUBST(objdir)
+AC_SUBST(enable_fast_install)
+
 # 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.
@@ -3683,9 +3707,6 @@ else
 fi)
 AC_SUBST(slibdir)
 
-objdir=`${PWDCMD-pwd}`
-AC_SUBST(objdir)
-
 AC_ARG_WITH(datarootdir,
 [  --with-datarootdir=DIR  Use DIR as the data root [[PREFIX/share]]],
 datarootdir="\${prefix}/$with_datarootdir",