Don't link with libw if libc already contains w* routines.

Link every library with libnsl if required.
Include ieeefp.h where necessary.

configure.in

@@ -98,9 +98,9 @@ AC_CHECK_LIB(i386,i386_set_ldt)
 dnl Check for -lossaudio for NetBSD
 AC_CHECK_LIB(ossaudio,_oss_ioctl)
 dnl Check for -lw for Solaris
-AC_CHECK_LIB(w,iswalnum)
+AC_CHECK_FUNCS(iswalnum,,AC_CHECK_LIB(w,iswalnum))
 dnl Check for -lnsl for Solaris
-AC_CHECK_FUNCS(gethostbyname,, AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl", AC_CHECK_LIB(socket, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl", , -lnsl), -lsocket))
+AC_CHECK_FUNCS(gethostbyname,,AC_CHECK_LIB(nsl,gethostbyname))
 dnl Check for -lsocket for Solaris
 AC_CHECK_FUNCS(connect,,AC_CHECK_LIB(socket,connect))
 dnl Check for -lxpg4 for FreeBSD
@@ -843,6 +843,7 @@ AC_CHECK_HEADERS(\
 	arpa/nameser.h \
 	elf.h \
 	float.h \
+	ieeefp.h \
 	libio.h \
 	libutil.h \
 	link.h \

dlls/crtdll/crtdll_main.c

@@ -26,6 +26,10 @@ UB 000416:
 
 #include "crtdll.h"
 
+#ifdef HAVE_IEEEFP_H
+#include <ieeefp.h>
+#endif
+
 #include <ctype.h>
 #define __USE_ISOC9X 1
 #define __USE_ISOC99 1

include/config.h.in

@@ -218,6 +218,9 @@
 /* Define if you have the inet_network function.  */
 #undef HAVE_INET_NETWORK
 
+/* Define if you have the iswalnum function.  */
+#undef HAVE_ISWALNUM
+
 /* Define if you have the lstat function.  */
 #undef HAVE_LSTAT
 
@@ -323,6 +326,9 @@
 /* Define if you have the <float.h> header file.  */
 #undef HAVE_FLOAT_H
 
+/* Define if you have the <ieeefp.h> header file.  */
+#undef HAVE_IEEEFP_H
+
 /* Define if you have the <libio.h> header file.  */
 #undef HAVE_LIBIO_H
 
@@ -491,8 +497,5 @@
 /* Define if you have the ossaudio library (-lossaudio).  */
 #undef HAVE_LIBOSSAUDIO
 
-/* Define if you have the w library (-lw).  */
-#undef HAVE_LIBW
-
 /* Define if you have the xpg4 library (-lxpg4).  */
 #undef HAVE_LIBXPG4