PR fortran/46416

[pf3gnuchains/gcc-fork.git] / libgcc / configure.ac

diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index b055dba..fc157d3 100644 (file)
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -5,8 +5,9 @@ sinclude(../config/tls.m4)
 sinclude(../config/acx.m4)
 sinclude(../config/no-executables.m4)
 sinclude(../config/override.m4)
+sinclude(../config/dfp.m4)
 
-AC_PREREQ(2.59)
+AC_PREREQ(2.64)
 AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
 AC_CONFIG_SRCDIR([static-object.mk])
 
@@ -125,41 +126,7 @@ AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
 decimal_float=$libgcc_cv_dfp
 AC_SUBST(decimal_float)
 
-AC_ARG_ENABLE(decimal-float,
-[  --enable-decimal-float={no,yes,bid,dpd}
-                       enable decimal float extension to C.  Selecting 'bid'
-                       or 'dpd' choses which decimal floating point format
-                       to use],
-[
-  case $enable_decimal_float in
-    yes | no | bid | dpd) ;;
-    *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
-Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
-  esac
-],
-[
-  case $host in
-    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
-      enable_decimal_float=yes
-      ;;
-    *)
-      enable_decimal_float=no
-      ;;
-  esac
-])
-
-# x86's use BID format instead of DPD
-if test x$enable_decimal_float = xyes; then
-  case $host in
-    i?86*-*-linux* | x86_64*-*-linux*)
-      enable_decimal_float=bid
-      ;;
-    *)
-      enable_decimal_float=dpd
-      ;;
-  esac
-fi
-AC_SUBST(enable_decimal_float)
+GCC_AC_ENABLE_DECIMAL_FLOAT([$host])
 
 # Check for fixed-point support.
 AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point],
@@ -168,6 +135,17 @@ AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point],
 fixed_point=$libgcc_cv_fixed_point
 AC_SUBST(fixed_point)
 
+# Check for assembler CFI support.
+AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],
+              [AC_COMPILE_IFELSE(
+[asm("\n\
+       .text\n\
+       .cfi_startproc\n\
+       .cfi_personality 0, symbol\n\
+       .cfi_endproc");],
+  [libgcc_cv_cfi=yes],
+  [libgcc_cv_cfi=no])])
+
 # Check 32bit or 64bit for x86.
 case ${host} in
 i?86*-*-* | x86_64*-*-*)
@@ -191,7 +169,7 @@ esac
 # Link with -nostartfiles -nodefaultlibs since neither are present while
 # building libgcc.
 case ${host} in
-i?86-*-solaris2.1[[0-9]]*)
+i?86-*-solaris2*)
   cat > conftest.s <<EOF
        .section        .eh_frame,"a",@unwind
        .zero   4
@@ -238,6 +216,14 @@ if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then
 fi
 AC_SUBST(set_have_cc_tls)
 
+# See if we have emulated thread-local storage.
+GCC_CHECK_EMUTLS
+set_use_emutls=
+if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then
+  set_use_emutls="-DUSE_EMUTLS"
+fi
+AC_SUBST(set_use_emutls)
+
 # Conditionalize the makefile for this target machine.
 tmake_file_=
 for f in ${tmake_file}