# HG changeset patch
# User jwe
# Date 760870538 0
# Node ID aaf43fb91f39635099927fa10ef040cc365f72b4
# Parent  52f8902e06f92b8155d8ab21fe879c897a9a88ef
[project @ 1994-02-10 08:55:38 by jwe]

diff --git a/configure.in b/configure.in
--- a/configure.in
+++ b/configure.in
@@ -346,12 +346,18 @@
 
 # Check to see if we have IEEE math functions, and if so, which ones.
 #
+# For Linux: add -mieee-fp flag to CFLAGS when checking for IEEE FP
+# functions, otherwise we may not find them.
+#
 # Also check for some additional trig functions that aren't ANSI but
 # are often available.  If they are missing, we try to replace them
 # with functions from the BSD/NET2 math library.
 
 AC_HAVE_LIBRARY(-lm)dnl
+XCFLAGS=$CFLAGS
+CFLAGS="$CFLAGS $GCC_IEEE_FP_FLAG"
 AC_HAVE_FUNCS(finite isnan isinf)dnl
+CFLAGS=$XCFLAGS
 AC_REPLACE_FUNCS(acosh asinh atanh)dnl
 
 if test -n "$LIBOBJS"; then