$NetBSD: patch-ac,v 1.29 2013/05/05 14:57:27 joerg Exp $

--- configure.orig	2012-06-14 22:05:51.000000000 +0000
+++ configure
@@ -3976,7 +3976,7 @@ fi
 
 
 if test "${want_R_shlib}" = yes; then
-  LIBR="-L\$(R_HOME)/lib\$(R_ARCH) -lR"
+  LIBR="-Wl,-R${prefix}/lib/R/lib\$(R_ARCH) -L\$(R_HOME)/lib\$(R_ARCH) -lR"
 else
   LIBR=
 fi
@@ -4040,7 +4040,7 @@ fi
 if test "x${want_lto}" != xno; then
   LTO=-flto
 fi
-if test "x${want_lto}" == xyes; then
+if test "x${want_lto}" = xyes; then
   LTOALL=-flto
 fi
 
@@ -22963,6 +22963,11 @@ fi
 	  done
 	  ;;
 	-[lLR]*)
+            case $ac_arg in
+            -R*)
+                ac_arg="${wl}$ac_arg"
+                ;;
+            esac
 	    ac_exists=false
   for ac_i in $ac_cv_f77_libs; do
     if test x"$ac_arg" = x"$ac_i"; then
@@ -23928,6 +23933,9 @@ cat > conftest.c <<EOF
 
 extern void F77_SYMBOL(cftest)(int *a, int *b, double *x, double *y);
 
+int MAIN_ () { return 0; }
+int MAIN__ () { return 0; }
+
 int main () {
   int a[3] = {17, 237, 2000000000}, b[2], res = 0;
   double x[3] = {3.14159265, 123.456789, 2.3e34}, z[3];
@@ -24023,6 +24031,9 @@ typedef struct {
 
 extern void F77_SYMBOL(cftest)(Rcomplex *x);
 
+int MAIN_ () { return 0; }
+int MAIN__ () { return 0; }
+
 int main () {
     Rcomplex z[3];
 
@@ -26224,12 +26235,12 @@ $as_echo "$as_me: WARNING: Use of flat n
       SHLIB_LIBADD="-lcc_dynamic"
     fi
     ;;
-  freebsd*)
-    main_ldflags="-export-dynamic"
+  freebsd*|dragonfly*)
+    main_ldflags="${wl}-export-dynamic"
     shlib_ldflags="-shared"
     ;;
   gnu*)				# GNU Hurd
-    main_ldflags="-export-dynamic"
+    main_ldflags="${wl}-export-dynamic"
     ;;
   hpux*)
     SHLIB_EXT=".sl"
@@ -26312,8 +26323,15 @@ $as_echo "$as_me: WARNING: Use of flat n
     fcpicflags=
     ;;
   netbsd*)
+     fpicflags="-fPIC"
+     case "${host_cpu}" in
+       powerpc*)
+        cpicflags="-fPIC"
+        ;;
+     esac
+
     if ${CPP} - -dM < /dev/null | grep __ELF__ >/dev/null ; then
-      main_ldflags="-export-dynamic"
+      main_ldflags="${wl}-export-dynamic"
       shlib_ldflags="-shared"
     else
       shlib_ldflags="-Bshareable"
@@ -26335,22 +26353,22 @@ $as_echo "$as_me: WARNING: Use of flat n
   solaris*)
 ## SPARC has only an 8k global object table, 1024 entries on 64-bit,
 ## so need PIC not pic.  They are the same on other Solaris platforms.
-    shlib_ldflags="-G"
-    shlib_cxxldflags="-G"
    if test "${GCC}" = yes; then
+      shlib_ldflags="-shared"
+      shlib_cxxldflags="-shared"
       cpicflags="-fPIC"
       ld=`${CC} -print-prog-name=ld`
       ldoutput=`${ld} -v 2>&1 | grep GNU`
       if test -n "${ldoutput}"; then
 	main_ldflags="-Wl,-export-dynamic"
-	shlib_ldflags="-shared"
-        shlib_cxxldflags="-shared"
       else
         ## it seems gcc c 4.6.2 needs this with Solaris linker
 	shlib_ldflags="-shared"
         shlib_cxxldflags="-shared"
       fi
     else
+      shlib_ldflags="-G"
+      shlib_cxxldflags="-G"
       cpicflags="-KPIC"
       if test "`basename ${CXX}`" = "CC" ; then
         ## Forte version 7 needs -lCstd: Forte 6 does not.
@@ -26407,7 +26425,7 @@ fi
 : ${CPICFLAGS="${cpicflags}"}
 if test -z "${CPICFLAGS}"; then
   case "${host_os}" in
-    aix*|cygwin*|irix*|mingw*|osf*)
+    aix*|cygwin*|irix*|mingw*|osf*|darwin*)
       ;;
     *)
       { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: I could not determine CPICFLAGS." >&5
@@ -26916,6 +26934,14 @@ _ACEOF
 ## Cygwin has rintl but not nearbyintl
 for ac_func in expm1 hypot log1p log2 log10 nearbyint nearbyintl powl rint rintl
 do
+case $ac_func in
+expm1|log1p|log2|log10|nearbyint|nearbyintl|rint|rintl)
+    args="x"
+    ;;
+hypot|powl)
+    args="x,x"
+    ;;
+esac
 as_ac_Symbol=`$as_echo "ac_cv_have_decl_$ac_func" | $as_tr_sh`
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $ac_func exists and is declared" >&5
 $as_echo_n "checking whether $ac_func exists and is declared... " >&6; }
@@ -26925,24 +26951,12 @@ else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <math.h>
+volatile long double x;
 
-#ifdef F77_DUMMY_MAIN
-
-#  ifdef __cplusplus
-     extern "C"
-#  endif
-   int F77_DUMMY_MAIN() { return 1; }
-
-#endif
 int
 main ()
 {
-#ifndef $ac_func
-  char *p = (char *) $ac_func;
-#endif
-
-  ;
-  return 0;
+  return $ac_func($args);
 }
 _ACEOF
 if ac_fn_c_try_link "$LINENO"; then :
@@ -29539,6 +29553,15 @@ cat > conftest.c <<EOF
 #endif
 extern void F77_SYMBOL(test1)(int *iflag);
 
+#ifdef F77_DUMMY_MAIN
+
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+
+#endif
+
 int main () {
   int iflag;
   F77_SYMBOL(test1)(&iflag);
@@ -29606,6 +29629,14 @@ else
 #else
 # define F77_SYMBOL(x)   x
 #endif
+#ifdef F77_DUMMY_MAIN
+
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+
+#endif
 void F77_SYMBOL(xerbla)(char *srname, int *info)
 {}
 void blas_set () {