X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=libgcc%2Fconfigure.ac;h=f547bffec00ed778c07055d3aa7de04246bc919d;hb=e06b725c970e48c054ebce24b8371e6e00816d4c;hp=a81e20943bf242e3457201eb720446ae7faaf81a;hpb=63abf89e1f2516f9433e77d1e788ea3e0a52d115;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index a81e20943bf..f547bffec00 100644
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -6,12 +6,19 @@ sinclude(../config/acx.m4)
 sinclude(../config/no-executables.m4)
 sinclude(../config/lib-ld.m4)
 sinclude(../config/override.m4)
+sinclude(../config/picflag.m4)
 sinclude(../config/dfp.m4)
+sinclude(../config/unwind_ipinfo.m4)
 
 AC_PREREQ(2.64)
 AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
 AC_CONFIG_SRCDIR([static-object.mk])
 
+# The libgcc should not depend on any header files
+AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS],
+  [m4_divert_text([DEFAULTS],
+    [ac_includes_default='/* none */'])])
+
 AC_ARG_WITH(target-subdir,
 [  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])
 AC_ARG_WITH(cross-host,
@@ -57,6 +64,9 @@ AC_ARG_ENABLE(shared,
 ], [enable_shared=yes])
 AC_SUBST(enable_shared)
 
+GCC_PICFLAG
+AC_SUBST(PICFLAG)
+
 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
 AC_ARG_ENABLE(version-specific-runtime-libs,
 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
@@ -151,6 +161,13 @@ GCC_NO_EXECUTABLES
 AC_PROG_CC
 AC_PROG_CPP_WERROR
 
+AC_CHECK_SIZEOF([double])
+AC_CHECK_SIZEOF([long double])
+AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8])
+AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8])
+AC_SUBST(double_type_size)
+AC_SUBST(long_double_type_size)
+
 # Check for decimal float support.
 AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
 	       [AC_COMPILE_IFELSE([_Decimal32 x;], [libgcc_cv_dfp=yes],
@@ -167,8 +184,71 @@ AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point],
 fixed_point=$libgcc_cv_fixed_point
 AC_SUBST(fixed_point)
 
+# For platforms with the unwind ABI which includes an unwind library,
+# libunwind, we can choose to use the system libunwind.
+# config.gcc also contains tests of with_system_libunwind.
+GCC_CHECK_UNWIND_GETIPINFO
+
+# The sjlj test is almost duplicated here and in libgo/configure.ac (for C),
+# libstdc++-v3/acinclude.m4 and libjava/configure.ac (for C++), and
+# libobjc/configure.ac (for Objective-C).
+# FIXME: This should be centralized in config/sjlj.m4.
+AC_ARG_ENABLE(sjlj-exceptions,
+  AC_HELP_STRING([--enable-sjlj-exceptions],
+		 [force use of builtin_setjmp for exceptions]),
+  [case "$enableval" in
+   yes|no|auto) ;;
+   *) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;;
+   esac],
+  [enable_sjlj_exceptions=auto])
+
+AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions],
+[libgcc_cv_lib_sjlj_exceptions],
+[AC_LANG_CONFTEST(
+  [AC_LANG_SOURCE([
+void bar ();
+void clean (int *);
+void foo ()
+{
+  int i __attribute__ ((cleanup (clean)));
+  bar();
+}
+])])
+CFLAGS_hold=$CFLAGS
+CFLAGS="--save-temps -fexceptions"
+libgcc_cv_lib_sjlj_exceptions=unknown
+AS_IF([ac_fn_c_try_compile],
+  [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
+    libgcc_cv_lib_sjlj_exceptions=yes
+  elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
+    libgcc_cv_lib_sjlj_exceptions=no
+  fi])
+CFLAGS=$CFLAGS_hold
+rm -f conftest*
+])
+
+if test "$enable_sjlj_exceptions" = "auto"; then
+  enable_sjlj_exceptions=$libgcc_cv_lib_sjlj_exceptions
+fi
+
+case $enable_sjlj_exceptions in
+yes)
+  AC_DEFINE(LIBGCC_SJLJ_EXCEPTIONS, 1,
+	[Define if the C compiler is configured for setjmp/longjmp exceptions.])
+  ;;
+no)
+  ;;
+*)
+  AC_MSG_ERROR([unable to detect exception model])
+  ;;
+esac
+
 AC_LIB_PROG_LD_GNU
 
+AC_MSG_CHECKING([for thread model used by GCC])
+target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
+AC_MSG_RESULT([$target_thread_file]) 
+
 # Check for assembler CFI support.
 AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],
 	       [AC_COMPILE_IFELSE(
@@ -180,20 +260,16 @@ AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],
   [libgcc_cv_cfi=yes],
   [libgcc_cv_cfi=no])])
 
-# Check 32bit or 64bit for x86.
-case ${host} in
-i?86*-*-* | x86_64*-*-*)
-  cat > conftest.c <<EOF
-#ifdef __x86_64__
+# Check 32bit or 64bit
+cat > conftest.c <<EOF
+#if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__))
 host_address=64
 #else
 host_address=32
 #endif
 EOF
-    eval `${CC-cc} -E conftest.c | grep host_address=`
-    rm -f conftest.c
-    ;;
-esac
+eval `${CC-cc} -E conftest.c | grep host_address=`
+rm -f conftest.c
 
 # Collect host-machine-specific information.
 . ${srcdir}/config.host
@@ -203,7 +279,7 @@ esac
 # Link with -nostartfiles -nodefaultlibs since neither are present while
 # building libgcc.
 case ${host} in
-i?86-*-solaris2*)
+i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
   cat > conftest.s <<EOF
 	.section	.eh_frame,"a",@unwind
 	.zero	4
@@ -211,9 +287,7 @@ i?86-*-solaris2*)
 	.zero	8
 EOF
   if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then
-      # configure expects config files in libgcc/config, so need a relative
-      # path here.
-      tmake_file="${tmake_file} ../../gcc/config/i386/t-crtstuff"
+      tmake_file="${tmake_file} i386/t-crtstuff"
   fi
   ;;
 esac
@@ -258,6 +332,17 @@ if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then
 fi
 AC_SUBST(set_use_emutls)
 
+# Conditionalize the sfp-machine.h header for this target machine.
+if test -z "${sfp_machine_header}"; then
+	sfp_machine_header=$cpu_type/sfp-machine.h
+	if test -f ${srcdir}/config/${sfp_machine_header}; then
+		:
+	else
+		sfp_machine_header=no-sfp-machine.h
+	fi
+fi
+AC_SUBST(sfp_machine_header)
+
 # Conditionalize the makefile for this target machine.
 tmake_file_=
 for f in ${tmake_file}
@@ -270,10 +355,39 @@ done
 tmake_file="${tmake_file_}"
 AC_SUBST(tmake_file)
 
+# Likewise export definitions for libgcc_tm.h
+tm_file_=
+for f in ${tm_file}
+do
+	tm_file_="${tm_file_} \$(srcdir)/config/$f"
+done
+tm_file="${tm_file_}"
+AC_SUBST(tm_file)
+AC_SUBST(tm_defines)
+
+# Map from thread model to thread header.
+case $target_thread_file in
+    aix)	thread_header=config/rs6000/gthr-aix.h ;;
+    dce)	thread_header=config/pa/gthr-dce.h ;;
+    lynx)	thread_header=config/gthr-lynx.h ;;
+    mipssde)	thread_header=config/mips/gthr-mipssde.h ;;
+    posix)	thread_header=gthr-posix.h ;;
+    rtems)	thread_header=config/gthr-rtems.h ;;
+    single)	thread_header=gthr-single.h ;;
+    tpf)	thread_header=config/s390/gthr-tpf.h ;;
+    vxworks)	thread_header=config/gthr-vxworks.h ;;
+    win32)	thread_header=config/i386/gthr-win32.h ;;
+esac
+
 # Substitute configuration variables
 AC_SUBST(cpu_type)
 AC_SUBST(extra_parts)
 AC_SUBST(asm_hidden_op)
+AC_CONFIG_LINKS([enable-execute-stack.c:$enable_execute_stack])
+AC_CONFIG_LINKS([unwind.h:$unwind_header])
+AC_CONFIG_LINKS([md-unwind-support.h:config/$md_unwind_header])
+AC_CONFIG_LINKS([sfp-machine.h:config/$sfp_machine_header])
+AC_CONFIG_LINKS([gthr-default.h:$thread_header])
 
 # We need multilib support.
 AC_CONFIG_FILES([Makefile])