--- gcc/fortran/f95-lang.c.orig
+++ gcc/fortran/f95-lang.c
@@ -819,10 +819,17 @@
 
   gfc_define_builtin ("__builtin_cabsl", func_clongdouble_longdouble, 
 		      BUILT_IN_CABSL, "cabsl", ATTR_CONST_NOTHROW_LEAF_LIST);
+#if defined(__NetBSD__)
+  gfc_define_builtin ("__builtin_cabs", func_cdouble_double, 
+		      BUILT_IN_CABS, "__c99_cabs", ATTR_CONST_NOTHROW_LEAF_LIST);
+  gfc_define_builtin ("__builtin_cabsf", func_cfloat_float, 
+		      BUILT_IN_CABSF, "__c99_cabsf", ATTR_CONST_NOTHROW_LEAF_LIST);
+#else
   gfc_define_builtin ("__builtin_cabs", func_cdouble_double, 
 		      BUILT_IN_CABS, "cabs", ATTR_CONST_NOTHROW_LEAF_LIST);
   gfc_define_builtin ("__builtin_cabsf", func_cfloat_float, 
 		      BUILT_IN_CABSF, "cabsf", ATTR_CONST_NOTHROW_LEAF_LIST);
+#endif
  
   gfc_define_builtin ("__builtin_copysignl", mfunc_longdouble[1], 
 		      BUILT_IN_COPYSIGNL, "copysignl",
--- libgfortran/acinclude.m4.orig
+++ libgfortran/acinclude.m4
@@ -99,7 +99,7 @@
 	      [Define to 1 if the target supports #pragma weak])
   fi
   case "$host" in
-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | alpha*-dec-osf* )
+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | alpha*-dec-osf* | *-*-netbsd* )
       AC_DEFINE(GTHREAD_USE_WEAK, 0,
 		[Define to 0 if the target shouldn't use #pragma weak])
       ;;
--- libquadmath/Makefile.in.orig
+++ libquadmath/Makefile.in
@@ -388,15 +388,14 @@
 
 # Subdir rules rely on $(FLAGS_TO_PASS)
 @BUILD_LIBQUADMATH_TRUE@FLAGS_TO_PASS = $(AM_MAKEFLAGS)
-@BUILD_LIBQUADMATH_TRUE@MAKEOVERRIDES = 
-@BUILD_LIBQUADMATH_TRUE@@GENINSRC_FALSE@STAMP_GENINSRC = 
+@BUILD_LIBQUADMATH_TRUE@MAKEOVERRIDES =
+@BUILD_LIBQUADMATH_TRUE@@GENINSRC_FALSE@STAMP_GENINSRC =
 
 # AM_CONDITIONAL on configure option --generated-files-in-srcdir
 @BUILD_LIBQUADMATH_TRUE@@GENINSRC_TRUE@STAMP_GENINSRC = stamp-geninsrc
-@BUILD_INFO_FALSE@@BUILD_LIBQUADMATH_TRUE@STAMP_BUILD_INFO = 
+@BUILD_LIBQUADMATH_TRUE@STAMP_BUILD_INFO =
 
 # AM_CONDITIONAL on configure check ACX_CHECK_PROG_VER([MAKEINFO])
-@BUILD_INFO_TRUE@@BUILD_LIBQUADMATH_TRUE@STAMP_BUILD_INFO = stamp-build-info
 @BUILD_LIBQUADMATH_TRUE@CLEANFILES = $(STAMP_GENINSRC) $(STAMP_BUILD_INFO) libquadmath.info
 @BUILD_LIBQUADMATH_TRUE@MAINTAINERCLEANFILES = $(srcdir)/libquadmath.info
 
@@ -1247,7 +1246,7 @@
 
 info-am: $(INFO_DEPS)
 
-install-data-am: install-info-am install-nodist_libsubincludeHEADERS
+install-data-am: install-nodist_libsubincludeHEADERS
 
 install-dvi: install-dvi-am
 
--- libgfortran/configure.orig
+++ libgfortran/configure
@@ -25564,7 +25564,7 @@
 
   fi
   case "$host" in
-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | alpha*-dec-osf* )
+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | alpha*-dec-osf* | *-*-netbsd* )
 
 $as_echo "#define GTHREAD_USE_WEAK 0" >>confdefs.h