2001-09-10 Benjamin Kosnik <bkoz@redhat.com>

	* configure.in: Fix cross compiling math routines. Correct
	comments for cross compiling and limits. Add floating point math
	routines found in newlib.
	* configure: Regenerate.
	* acconfig.h: Add macros.
	* config.h.in: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45530 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 43 insertions, 9 deletions

diff --git a/libstdc++-v3/configure.in b/libstdc++-v3/configure.in
index 00bb59f32e5..ebf969ff830 100644
--- a/libstdc++-v3/configure.in
+++ b/libstdc++-v3/configure.in
@@ -52,11 +52,20 @@ GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
 
 if test -n "$with_cross_host" || test x"$build" != x"$host"; then
 
+  # This lets us hard-code the functionality we know
+  # we'll have in the cross target environment. "Let" is a
+  # sugar-coated word placed on an especially dull and tedious hack, actually.
+  # Here's why GLIBCPP_CHECK_MATH_SUPPORT, and other autoconf macros
+  # that involve linking can't be used:
+  # "cannot open sim-crt0.o"
+  # "cannot open crt0.o"
+  # etc. All this is because there currently exists no unified,
+  # consistent way for top level CC information to be passed down
+  # to target directories: newlib includes, newlib linking info,
+  # libgloss versus newlib crt0.o, etc. When all of this is done, all
+  # of this hokey, excessive AC_DEFINE junk for crosses can be removed.
+
   # We are being configured with some form of cross compiler.
-  # mknumeric_limits may not work correctly, either because the
-  # compiler may not run on this machine, may not be able to link
-  # executables, or may produce executables we can't run on this
-  # machine. Thus, just use the pre-generated include/bits/limits_generic.h
   GLIBCPP_IS_CROSS_COMPILING=1
 
   # If Canadian cross, then don't pick up tools from the build
@@ -97,6 +106,7 @@ if test -n "$with_cross_host" || test x"$build" != x"$host"; then
 	AC_DEFINE(HAVE_FLOORF)
 	AC_DEFINE(HAVE_FMODF)
 	AC_DEFINE(HAVE_FREXPF)
+	AC_DEFINE(HAVE_HYPOTF)
 	AC_DEFINE(HAVE_ISINF)
 	AC_DEFINE(HAVE_ISINFF)
 	AC_DEFINE(HAVE_ISNAN)
@@ -132,6 +142,7 @@ if test -n "$with_cross_host" || test x"$build" != x"$host"; then
 	  AC_DEFINE(HAVE_FLOORL)
 	  AC_DEFINE(HAVE_FMODL)
 	  AC_DEFINE(HAVE_FREXPL)
+	  AC_DEFINE(HAVE_HYPOTL)
 	  AC_DEFINE(HAVE_ISINFL)
 	  AC_DEFINE(HAVE_ISNANL)
 	  AC_DEFINE(HAVE_LDEXPL)
@@ -156,17 +167,40 @@ if test -n "$with_cross_host" || test x"$build" != x"$host"; then
 	AC_DEFINE(HAVE_MMAP)
 	;;
     *)
-	# We assume newlib.  This lets us hard-code the functions we know
-	# we'll have.
+	# We assume newlib. 
+	# GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
+	# GLIBCPP_CHECK_MATH_SUPPORT
 	AC_DEFINE(HAVE_FINITE)
+	AC_DEFINE(HAVE_HYPOT)
 	AC_DEFINE(HAVE_ISNAN)
-	AC_DEFINE(HAVE_ISNANF)
 	AC_DEFINE(HAVE_ISINF)
+
+	AC_DEFINE(HAVE_ACOSF)
+	AC_DEFINE(HAVE_ASINF)
+	AC_DEFINE(HAVE_ATAN2F)
+	AC_DEFINE(HAVE_ATANF)
+	AC_DEFINE(HAVE_CEILF)
+	AC_DEFINE(HAVE_COSF)
+	AC_DEFINE(HAVE_COSHF)
+	AC_DEFINE(HAVE_EXPF)
+	AC_DEFINE(HAVE_FABSF)
+	AC_DEFINE(HAVE_FLOORF)
+	AC_DEFINE(HAVE_FMODF)
+	AC_DEFINE(HAVE_HYPOTF)
+	AC_DEFINE(HAVE_ISNANF)
 	AC_DEFINE(HAVE_ISINFF)
+	AC_DEFINE(HAVE_LDEXPF)
+	AC_DEFINE(HAVE_LOG10F)
+	AC_DEFINE(HAVE_LOGF)
+	AC_DEFINE(HAVE_MODFF)
+	AC_DEFINE(HAVE_POWF)
+	AC_DEFINE(HAVE_SINF)
+	AC_DEFINE(HAVE_SINHF)
+	AC_DEFINE(HAVE_SQRTF)
+	AC_DEFINE(HAVE_TANF)
+	AC_DEFINE(HAVE_TANHF)
 
 	os_include_dir="config/os/newlib"
-
-	# need to check for faster f versions of math functions, ie sinf?
 	;;
   esac
 else