$NetBSD: patch-ac,v 1.29 2013/05/10 01:17:33 riastradh Exp $

First chunk:
Add support for thread limits.
From Peter Stephenson <Peter.Stephenson@csr.com> on zsh-workers.
Accepted by Peter Stephenson <p.w.stephenson@ntlworld.com> on
zsh-workers on 2012-08-16.

Middle chunks:
Use a compile test, not a run test, for whether various rlimit values
are equivalent.  A compile test is sufficient because zsh uses these
values in switch cases, so they must be compile-time, if not
preprocessor-time, constants.

Last chunk:
Make this package build on Interix.  Patches provided by Hiramatsu
Yoshifumi in PR pkg/25946.
Last chunk only:
Don't force -Wl,--whole-archive for NetBSD, it breaks the build with
clang, which doesn't have a reason to disable it again.
Accepted by Peter Stephenson <p.w.stephenson@ntlworld.com> on
zsh-workers on 2012-08-16.

--- configure.orig	2012-09-15 20:13:14.000000000 +0000
+++ configure
@@ -9645,6 +9645,42 @@ if test $zsh_cv_have_RLIMIT_NTHR = yes; 
 
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for limit RLIMIT_NTHR" >&5
+$as_echo_n "checking for limit RLIMIT_NTHR... " >&6; }
+if ${zsh_cv_have_RLIMIT_NTHR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#include <sys/resource.h>
+int
+main ()
+{
+RLIMIT_NTHR
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  zsh_cv_have_RLIMIT_NTHR=yes
+else
+  zsh_cv_have_RLIMIT_NTHR=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $zsh_cv_have_RLIMIT_NTHR" >&5
+$as_echo "$zsh_cv_have_RLIMIT_NTHR" >&6; }
+
+if test $zsh_cv_have_RLIMIT_NTHR = yes; then
+  $as_echo "#define HAVE_RLIMIT_NTHR 1" >>confdefs.h
+
+fi
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for limit RLIMIT_NOFILE" >&5
 $as_echo_n "checking for limit RLIMIT_NOFILE... " >&6; }
 if ${zsh_cv_have_RLIMIT_NOFILE+:} false; then :
@@ -10011,9 +10047,6 @@ $as_echo_n "checking if RLIMIT_VMEM and 
 if ${zsh_cv_rlimit_vmem_is_rss+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test "$cross_compiling" = yes; then :
-  zsh_cv_rlimit_vmem_is_rss=no
-else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -10022,43 +10055,33 @@ else
 #include <sys/time.h>
 #endif
 #include <sys/resource.h>
-int main()
+int
+main ()
 {
-int ret = 1;
-#if defined(HAVE_RLIMIT_VMEM) && defined(HAVE_RLIMIT_RSS)
-if (RLIMIT_RSS == RLIMIT_VMEM) ret = 0;
-#endif
-return ret;
+static char x[(RLIMIT_VMEM == RLIMIT_RSS)? 1 : -1]
+  ;
+  return 0;
 }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"; then :
   zsh_cv_rlimit_vmem_is_rss=yes
 else
   zsh_cv_rlimit_vmem_is_rss=no
 fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $zsh_cv_rlimit_vmem_is_rss" >&5
 $as_echo "$zsh_cv_rlimit_vmem_is_rss" >&6; }
-
 if test x$zsh_cv_rlimit_vmem_is_rss = xyes; then
   $as_echo "#define RLIMIT_VMEM_IS_RSS 1" >>confdefs.h
 
 fi
 
-
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking if RLIMIT_VMEM and RLIMIT_AS are the same" >&5
 $as_echo_n "checking if RLIMIT_VMEM and RLIMIT_AS are the same... " >&6; }
 if ${zsh_cv_rlimit_vmem_is_as+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test "$cross_compiling" = yes; then :
-  zsh_cv_rlimit_vmem_is_as=no
-else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -10067,43 +10090,33 @@ else
 #include <sys/time.h>
 #endif
 #include <sys/resource.h>
-int main()
+int
+main ()
 {
-int ret = 1;
-#if defined(HAVE_RLIMIT_VMEM) && defined(HAVE_RLIMIT_AS)
-if (RLIMIT_AS == RLIMIT_VMEM) ret = 0;
-#endif
-return ret;
+static char x[(RLIMIT_VMEM == RLIMIT_AS)? 1 : -1]
+  ;
+  return 0;
 }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"; then :
   zsh_cv_rlimit_vmem_is_as=yes
 else
   zsh_cv_rlimit_vmem_is_as=no
 fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $zsh_cv_rlimit_vmem_is_as" >&5
 $as_echo "$zsh_cv_rlimit_vmem_is_as" >&6; }
-
 if test x$zsh_cv_rlimit_vmem_is_as = xyes; then
   $as_echo "#define RLIMIT_VMEM_IS_AS 1" >>confdefs.h
 
 fi
 
-
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking if RLIMIT_RSS and RLIMIT_AS are the same" >&5
 $as_echo_n "checking if RLIMIT_RSS and RLIMIT_AS are the same... " >&6; }
 if ${zsh_cv_rlimit_rss_is_as+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test "$cross_compiling" = yes; then :
-  zsh_cv_rlimit_rss_is_as=no
-else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -10112,28 +10125,23 @@ else
 #include <sys/time.h>
 #endif
 #include <sys/resource.h>
-int main()
+int
+main ()
 {
-int ret = 1;
-#if defined(HAVE_RLIMIT_RSS) && defined(HAVE_RLIMIT_AS)
-if (RLIMIT_AS == RLIMIT_RSS) ret = 0;
-#endif
-return ret;
+static char x[(RLIMIT_RSS == RLIMIT_AS)? 1 : -1]
+  ;
+  return 0;
 }
 _ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
+if ac_fn_c_try_compile "$LINENO"; then :
   zsh_cv_rlimit_rss_is_as=yes
 else
   zsh_cv_rlimit_rss_is_as=no
 fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $zsh_cv_rlimit_rss_is_as" >&5
 $as_echo "$zsh_cv_rlimit_rss_is_as" >&6; }
-
 if test x$zsh_cv_rlimit_rss_is_as = xyes; then
   $as_echo "#define RLIMIT_RSS_IS_AS 1" >>confdefs.h
 
@@ -11630,6 +11638,10 @@ $as_echo "$zsh_cv_sys_elf" >&6; }
         DLLD="${DLLD=$CC}"
         DLLDARG=""
       ;;
+      *interix*)
+        DLLD="${DLLD=$CC}"
+        DLLDARG=""
+      ;;
       * )
 	DLLD="${DLLD=ld}"
 	DLLDARG=""
@@ -11659,7 +11699,7 @@ $as_echo "$zsh_cv_sys_elf" >&6; }
     sunos*)       DLLDFLAGS="${DLLDFLAGS=-assert nodefinitions}" ;;
     sysv4*|esix*) DLLDFLAGS="${DLLDFLAGS=-G $ldflags}" ;;
     aix*)         DLLDFLAGS="${DLLDFLAGS=-G -bexpall -lc}" ;;
-    solaris*|sysv4*|esix*) DLLDFLAGS="${DLLDFLAGS=-G}" ;;
+    solaris*|sysv4*|esix*) DLLDFLAGS="${DLLDFLAGS=-shared}" ;;
     darwin*)      DLLDFLAGS="${DLLDFLAGS=-bundle -flat_namespace -undefined suppress}" ;;
     beos*|haiku*) DLLDFLAGS="${DLLDFLAGS=-nostart}" ;;
     openbsd*)