2009-05-15 Craig Howland <howland@LGSInnovations.com>

        * configure.in:  Add configuration test for long double type existing
        and set flag _HAVE_LONG_DOUBLE if true.  Fix INIT_ARRAY (.init_array)
        and _LDBL_EQ_DBL tests to not link so that will work with
        cross-compilers.
        * configure: Regenerated.
        * Makefile.in: Ditto.
        * newlib.hin: Add _HAVE_LONG_DOUBLE flag.
        * libc/include/math.h:  Change non-builtin defines for HUGE_VAL,
        HUGE_VALF, and HUGE_VALL to be constant expressions.  Add definitions
        for the non-builtin case for INFINITY and NAN.  Gate HUGE_VALL and
        union __ldmath definitions with (new) _HAVE_LONG_DOUBLE.
        *libm/common/s_infconst.c:  Change definitions to use values from
        float.h instead of non-so-portable integer forms.  Mark as being
        deprecated (because now removed from math.h, are not used anywhere
        in Newlib, itself).

1 files changed, 67 insertions, 7 deletions

diff --git a/newlib/configure b/newlib/configure
index 1d9108d88..baf10f668 100755
--- a/newlib/configure
+++ b/newlib/configure
@@ -462,7 +462,7 @@ ac_subdirs_all="$ac_subdirs_all libc"
 ac_subdirs_all="$ac_subdirs_all libm"
 ac_subdirs_all="$ac_subdirs_all doc"
 ac_subdirs_all="$ac_subdirs_all iconvdata"
-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 MAY_SUPPLY_SYSCALLS_TRUE MAY_SUPPLY_SYSCALLS_FALSE newlib_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar CC DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE AS ac_ct_AS AR ac_ct_AR RANLIB ac_ct_RANLIB READELF ac_ct_READELF MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT CCAS CCASFLAGS NEWLIB_CFLAGS LDFLAGS ELIX_LEVEL_0_TRUE ELIX_LEVEL_0_FALSE ELIX_LEVEL_1_TRUE ELIX_LEVEL_1_FALSE ELIX_LEVEL_2_TRUE ELIX_LEVEL_2_FALSE ELIX_LEVEL_3_TRUE ELIX_LEVEL_3_FALSE ELIX_LEVEL_4_TRUE ELIX_LEVEL_4_FALSE USE_LIBTOOL_TRUE USE_LIBTOOL_FALSE OBJEXT oext aext lpfx libm_machine_dir machine_dir sys_dir SED DLLTOOL ac_ct_DLLTOOL OBJDUMP ac_ct_OBJDUMP LIBTOOL CFLAGS CPPFLAGS ac_ct_CC EXEEXT EGREP FGREP GREP LD DUMPBIN ac_ct_DUMPBIN NM LN_S lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 CPP NEWLIB_HW_FP_TRUE NEWLIB_HW_FP_FALSE CC_FOR_NEWLIB subdirs HAVE_DOC_TRUE HAVE_DOC_FALSE EXTRA_DIRS CRT0 CRT0_DIR CRT1 CRT1_DIR LIBM_MACHINE_OBJECTLIST MACHINE_OBJECTLIST SYS_OBJECTLIST SYS_MACH_OBJECTLIST POSIX_OBJECTLIST SIGNAL_OBJECTLIST SYSCALL_OBJECTLIST UNIX_OBJECTLIST STDIO64_OBJECTLIST CC_FOR_BUILD libc_cv_initfinit_array 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 MAY_SUPPLY_SYSCALLS_TRUE MAY_SUPPLY_SYSCALLS_FALSE newlib_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar CC DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE AS ac_ct_AS AR ac_ct_AR RANLIB ac_ct_RANLIB READELF ac_ct_READELF MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT CCAS CCASFLAGS NEWLIB_CFLAGS LDFLAGS ELIX_LEVEL_0_TRUE ELIX_LEVEL_0_FALSE ELIX_LEVEL_1_TRUE ELIX_LEVEL_1_FALSE ELIX_LEVEL_2_TRUE ELIX_LEVEL_2_FALSE ELIX_LEVEL_3_TRUE ELIX_LEVEL_3_FALSE ELIX_LEVEL_4_TRUE ELIX_LEVEL_4_FALSE USE_LIBTOOL_TRUE USE_LIBTOOL_FALSE OBJEXT oext aext lpfx libm_machine_dir machine_dir sys_dir SED DLLTOOL ac_ct_DLLTOOL OBJDUMP ac_ct_OBJDUMP LIBTOOL CFLAGS CPPFLAGS ac_ct_CC EXEEXT EGREP FGREP GREP LD DUMPBIN ac_ct_DUMPBIN NM LN_S lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 CPP NEWLIB_HW_FP_TRUE NEWLIB_HW_FP_FALSE CC_FOR_NEWLIB subdirs HAVE_DOC_TRUE HAVE_DOC_FALSE EXTRA_DIRS CRT0 CRT0_DIR CRT1 CRT1_DIR LIBM_MACHINE_OBJECTLIST MACHINE_OBJECTLIST SYS_OBJECTLIST SYS_MACH_OBJECTLIST POSIX_OBJECTLIST SIGNAL_OBJECTLIST SYSCALL_OBJECTLIST UNIX_OBJECTLIST STDIO64_OBJECTLIST CC_FOR_BUILD libc_cv_initfinit_array HAVE_LONG_DOUBLE_TRUE HAVE_LONG_DOUBLE_FALSE LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -11874,8 +11874,8 @@ int __start (void) { return 0; }
 int foo (void) { return 1; }
 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
 EOF
-if { ac_try='${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
-		   -static -nostartfiles -nostdlib 1>&5'
+if { ac_try='${CC} $CFLAGS $CPPFLAGS -c -o conftest conftest.c
+							1>&5'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -11902,8 +11902,59 @@ _ACEOF
 
 fi
 
-echo "$as_me:$LINENO: checking long double equals double" >&5
-echo $ECHO_N "checking long double equals double... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking whether long double type exists" >&5
+echo $ECHO_N "checking whether long double type exists... $ECHO_C" >&6
+if test "${acnewlib_cv_type_long_double+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat > conftest.c <<EOF
+/* Check two ways:  float.h defines and direct type declaration.  */
+#include <float.h>
+#if defined(LDBL_MANT_DIG)
+  #define _HAVE_LONG_DOUBLE
+ #else
+  #error "LDBL != DBL"
+#endif
+long double test() {
+long double ld = 0.0L;
+return ld;
+}
+EOF
+if { ac_try='${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
+							1>&5'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }
+then
+  acnewlib_cv_type_long_double=yes;
+else
+  acnewlib_cv_type_long_double=no;
+fi
+rm -f conftest*
+fi
+echo "$as_me:$LINENO: result: $acnewlib_cv_type_long_double" >&5
+echo "${ECHO_T}$acnewlib_cv_type_long_double" >&6
+if test $acnewlib_cv_type_long_double = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define _HAVE_LONG_DOUBLE 1
+_ACEOF
+
+fi
+
+
+if test x"$acnewlib_cv_type_long_double" = x"yes"; then
+  HAVE_LONG_DOUBLE_TRUE=
+  HAVE_LONG_DOUBLE_FALSE='#'
+else
+  HAVE_LONG_DOUBLE_TRUE='#'
+  HAVE_LONG_DOUBLE_FALSE=
+fi
+
+
+echo "$as_me:$LINENO: checking whether long double equals double" >&5
+echo $ECHO_N "checking whether long double equals double... $ECHO_C" >&6
 if test "${newlib_ldbl_eq_dbl+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
@@ -11916,8 +11967,8 @@ else
   #error "LDBL != DBL"
 #endif
 EOF
-if { ac_try='${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
-		   -static -nostartfiles -nostdlib 1>&5'
+if { ac_try='${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
+							1>&5'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -12123,6 +12174,13 @@ echo "$as_me: error: conditional \"HAVE_DOC\" was never defined.
 Usually this means the macro was only invoked conditionally." >&2;}
    { (exit 1); exit 1; }; }
 fi
+if test -z "${HAVE_LONG_DOUBLE_TRUE}" && test -z "${HAVE_LONG_DOUBLE_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"HAVE_LONG_DOUBLE\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"HAVE_LONG_DOUBLE\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 
 : ${CONFIG_STATUS=./config.status}
 ac_clean_files_save=$ac_clean_files
@@ -13050,6 +13108,8 @@ s,@UNIX_OBJECTLIST@,$UNIX_OBJECTLIST,;t t
 s,@STDIO64_OBJECTLIST@,$STDIO64_OBJECTLIST,;t t
 s,@CC_FOR_BUILD@,$CC_FOR_BUILD,;t t
 s,@libc_cv_initfinit_array@,$libc_cv_initfinit_array,;t t
+s,@HAVE_LONG_DOUBLE_TRUE@,$HAVE_LONG_DOUBLE_TRUE,;t t
+s,@HAVE_LONG_DOUBLE_FALSE@,$HAVE_LONG_DOUBLE_FALSE,;t t
 s,@LIBOBJS@,$LIBOBJS,;t t
 s,@LTLIBOBJS@,$LTLIBOBJS,;t t
 CEOF