r18152: move our AC macros into lib/replace/libreplace_macros.m4

and include them from there

metze
(This used to be commit 38f9e90a120b4e62f005a1bac89139ee87f63071)

9 files changed, 188 insertions, 259 deletions

diff --git a/source4/aclocal.m4 b/source4/aclocal.m4
index 319a83eaf7..f5437e6683 100644
--- a/source4/aclocal.m4
+++ b/source4/aclocal.m4
@@ -1,178 +1,3 @@
-dnl AC_PROG_CC_FLAG(flag)
-AC_DEFUN(AC_PROG_CC_FLAG,
-[AC_CACHE_CHECK(whether ${CC-cc} accepts -$1, ac_cv_prog_cc_$1,
-[echo 'void f(){}' > conftest.c
-if test -z "`${CC-cc} -$1 -c conftest.c 2>&1`"; then
-  ac_cv_prog_cc_$1=yes
-else
-  ac_cv_prog_cc_$1=no
-fi
-rm -f conftest*
-])])
-
-dnl see if a declaration exists for a function or variable
-dnl defines HAVE_function_DECL if it exists
-dnl AC_HAVE_DECL(var, includes)
-AC_DEFUN(AC_HAVE_DECL,
-[
- AC_CACHE_CHECK([for $1 declaration],ac_cv_have_$1_decl,[
-    AC_TRY_COMPILE([$2],[int i = (int)$1],
-        ac_cv_have_$1_decl=yes,ac_cv_have_$1_decl=no)])
- if test x"$ac_cv_have_$1_decl" = x"yes"; then
-    AC_DEFINE([HAVE_]translit([$1], [a-z], [A-Z])[_DECL],1,[Whether $1() is available])
- fi
-])
-
-
-# AC_CHECK_LIB_EXT(LIBRARY, [EXT_LIBS], [FUNCTION],
-#              [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
-#              [ADD-ACTION-IF-FOUND],[OTHER-LIBRARIES])
-# ------------------------------------------------------
-#
-# Use a cache variable name containing both the library and function name,
-# because the test really is for library $1 defining function $3, not
-# just for library $1.  Separate tests with the same $1 and different $3s
-# may have different results.
-#
-# Note that using directly AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$3])
-# is asking for trouble, since AC_CHECK_LIB($lib, fun) would give
-# ac_cv_lib_$lib_fun, which is definitely not what was meant.  Hence
-# the AS_LITERAL_IF indirection.
-#
-# FIXME: This macro is extremely suspicious.  It DEFINEs unconditionally,
-# whatever the FUNCTION, in addition to not being a *S macro.  Note
-# that the cache does depend upon the function we are looking for.
-#
-# It is on purpose we used `ac_check_lib_ext_save_LIBS' and not just
-# `ac_save_LIBS': there are many macros which don't want to see `LIBS'
-# changed but still want to use AC_CHECK_LIB_EXT, so they save `LIBS'.
-# And ``ac_save_LIBS' is too tempting a name, so let's leave them some
-# freedom.
-AC_DEFUN([AC_CHECK_LIB_EXT],
-[
-AH_CHECK_LIB_EXT([$1])
-ac_check_lib_ext_save_LIBS=$LIBS
-LIBS="-l$1 $$2 $7 $LIBS"
-AS_LITERAL_IF([$1],
-      [AS_VAR_PUSHDEF([ac_Lib_ext], [ac_cv_lib_ext_$1])],
-      [AS_VAR_PUSHDEF([ac_Lib_ext], [ac_cv_lib_ext_$1''])])dnl
-
-m4_ifval([$3],
- [
-    AH_CHECK_FUNC_EXT([$3])
-    AS_LITERAL_IF([$1],
-              [AS_VAR_PUSHDEF([ac_Lib_func], [ac_cv_lib_ext_$1_$3])],
-              [AS_VAR_PUSHDEF([ac_Lib_func], [ac_cv_lib_ext_$1''_$3])])dnl
-    AC_CACHE_CHECK([for $3 in -l$1], ac_Lib_func,
-	[AC_TRY_LINK_FUNC($3,
-                 [AS_VAR_SET(ac_Lib_func, yes);
-		  AS_VAR_SET(ac_Lib_ext, yes)],
-                 [AS_VAR_SET(ac_Lib_func, no);
-		  AS_VAR_SET(ac_Lib_ext, no)])
-	])
-    AS_IF([test AS_VAR_GET(ac_Lib_func) = yes],
-        [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_$3))])dnl
-    AS_VAR_POPDEF([ac_Lib_func])dnl
- ],[
-    AC_CACHE_CHECK([for -l$1], ac_Lib_ext,
-	[AC_TRY_LINK_FUNC([main],
-                 [AS_VAR_SET(ac_Lib_ext, yes)],
-                 [AS_VAR_SET(ac_Lib_ext, no)])
-	])
- ])
-LIBS=$ac_check_lib_ext_save_LIBS
-
-AS_IF([test AS_VAR_GET(ac_Lib_ext) = yes],
-    [m4_default([$4], 
-        [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
-		case "$$2" in
-		    *-l$1*)
-			;;
-		    *)
-			$2="-l$1 $$2"
-			;;
-		esac])
-		[$6]
-	    ],
-	    [$5])dnl
-AS_VAR_POPDEF([ac_Lib_ext])dnl
-])# AC_CHECK_LIB_EXT
-
-# AH_CHECK_LIB_EXT(LIBNAME)
-# ---------------------
-m4_define([AH_CHECK_LIB_EXT],
-[AH_TEMPLATE(AS_TR_CPP(HAVE_LIB$1),
-             [Define to 1 if you have the `]$1[' library (-l]$1[).])])
-
-dnl AC_SEARCH_LIBS_EXT(FUNCTION, SEARCH-LIBS, EXT_LIBS,
-dnl                    [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
-dnl                    [OTHER-LIBRARIES])
-dnl --------------------------------------------------------
-dnl Search for a library defining FUNC, if it's not already available.
-AC_DEFUN([AC_SEARCH_LIBS_EXT],
-[AC_CACHE_CHECK([for library containing $1], [ac_cv_search_ext_$1],
-[
-ac_func_search_ext_save_LIBS=$LIBS
-ac_cv_search_ext_$1=no
-AC_LINK_IFELSE([AC_LANG_CALL([], [$1])],
-	       [ac_cv_search_ext_$1="none required"])
-if test "$ac_cv_search_ext_$1" = no; then
-  for ac_lib in $2; do
-    LIBS="-l$ac_lib $$3 $6 $ac_func_search_save_ext_LIBS"
-    AC_LINK_IFELSE([AC_LANG_CALL([], [$1])],
-		   [ac_cv_search_ext_$1="-l$ac_lib"
-break])
-  done
-fi
-LIBS=$ac_func_search_ext_save_LIBS])
-AS_IF([test "$ac_cv_search_ext_$1" != no],
-  [test "$ac_cv_search_ext_$1" = "none required" || $3="$ac_cv_search_ext_$1 $$3"
-  $4],
-      [$5])dnl
-])
-
-dnl check for a function in a $LIBS and $OTHER_LIBS libraries variable.
-dnl AC_CHECK_FUNC_EXT(func,OTHER_LIBS,IF-TRUE,IF-FALSE)
-AC_DEFUN([AC_CHECK_FUNC_EXT],
-[
-    AH_CHECK_FUNC_EXT($1)	
-    ac_check_func_ext_save_LIBS=$LIBS
-    LIBS="$2 $LIBS"
-    AS_VAR_PUSHDEF([ac_var], [ac_cv_func_ext_$1])dnl
-    AC_CACHE_CHECK([for $1], ac_var,
-	[AC_LINK_IFELSE([AC_LANG_FUNC_LINK_TRY([$1])],
-                [AS_VAR_SET(ac_var, yes)],
-                [AS_VAR_SET(ac_var, no)])])
-    LIBS=$ac_check_func_ext_save_LIBS
-    AS_IF([test AS_VAR_GET(ac_var) = yes], 
-	    [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$1])) $3], 
-	    [$4])dnl
-AS_VAR_POPDEF([ac_var])dnl
-])# AC_CHECK_FUNC
-
-# AH_CHECK_FUNC_EXT(FUNCNAME)
-# ---------------------
-m4_define([AH_CHECK_FUNC_EXT],
-[AH_TEMPLATE(AS_TR_CPP(HAVE_$1),
-             [Define to 1 if you have the `]$1[' function.])])
-
-dnl Define an AC_DEFINE with ifndef guard.
-dnl AC_N_DEFINE(VARIABLE [, VALUE])
-define(AC_N_DEFINE,
-[cat >> confdefs.h <<\EOF
-[#ifndef] $1
-[#define] $1 ifelse($#, 2, [$2], $#, 3, [$2], 1)
-[#endif]
-EOF
-])
-
-dnl Add an #include
-dnl AC_ADD_INCLUDE(VARIABLE)
-define(AC_ADD_INCLUDE,
-[cat >> confdefs.h <<\EOF
-[#include] $1
-EOF
-])
 
 dnl Copied from libtool.m4
 AC_DEFUN(AC_PROG_LD_GNU,
@@ -209,7 +34,7 @@ AC_DEFUN(LIB_REMOVE_USR_LIB,[
   $1=[$]ac_new_flags
 ])
 
-m4_include(build/m4/public.m4)
+m4_include(lib/replace/libreplace_macros.m4)
 m4_include(build/m4/ax_cflags_gcc_option.m4)
 m4_include(build/m4/ax_cflags_irix_option.m4)
-m4_include(build/m4/smb_cc_features.m4)
+m4_include(build/m4/public.m4)
diff --git a/source4/build/m4/check_cc.m4 b/source4/build/m4/check_cc.m4
index 3999ad349e..4769d5087d 100644
--- a/source4/build/m4/check_cc.m4
+++ b/source4/build/m4/check_cc.m4
@@ -71,17 +71,10 @@ AC_SUBST(samba_cv_immediate_structures)
 
 ############################################
 # check if the compiler handles c99 struct initialization
-SMB_CC_SUPPORTS_C99_STRUCT_INIT(samba_cv_c99_struct_initialization=yes,
+LIBREPLACE_C99_STRUCT_INIT(samba_cv_c99_struct_initialization=yes,
 		    samba_cv_c99_struct_initialization=no)
 
 if test x"$samba_cv_c99_struct_initialization" != x"yes"; then
-	# We might need to add some flags to CC to get c99 behaviour.
-	AX_CFLAGS_IRIX_OPTION(-c99, CFLAGS)
-	SMB_CC_SUPPORTS_C99_STRUCT_INIT(samba_cv_c99_struct_initialization=yes,
-			    samba_cv_c99_struct_initialization=no)
-fi
-
-if test x"$samba_cv_c99_struct_initialization" != x"yes"; then
 	AC_MSG_WARN([C compiler does not support c99 struct initialization!])
 	AC_MSG_ERROR([Please Install gcc from http://gcc.gnu.org/])
 fi
diff --git a/source4/build/m4/smb_cc_features.m4 b/source4/build/m4/smb_cc_features.m4
deleted file mode 100644
index 4044e9615e..0000000000
--- a/source4/build/m4/smb_cc_features.m4
+++ /dev/null
@@ -1,29 +0,0 @@
-dnl SMB Compiler Capability Checks
-dnl -------------------------------------------------------
-dnl  Copyright (C) Stefan (metze) Metzmacher 2004,2005
-dnl  Released under the GNU GPL
-dnl -------------------------------------------------------
-dnl
-
-############################################
-# Check if the compiler handles c99 struct initialization.
-# Usage: SMB_CC_SUPPORTS_C99_STRUCT_INIT(success-action,failure-action)
-
-AC_DEFUN([SMB_CC_SUPPORTS_C99_STRUCT_INIT],
-[
-AC_MSG_CHECKING(for C99 designated initializers)
-AC_TRY_COMPILE([
-    #include <stdio.h>],
-    [
-       struct foo {
-	   int x;
-	   char y;
-       } ;
-       struct foo bar = {
-	    .y = 'X',
-	    .x = 1
-       };	 
-    ],
-[AC_MSG_RESULT(yes); $1],[AC_MSG_RESULT(no); $2])
-])
-
diff --git a/source4/lib/ldb/aclocal.m4 b/source4/lib/ldb/aclocal.m4
index cdc2a2fa52..2a7ad94963 100644
--- a/source4/lib/ldb/aclocal.m4
+++ b/source4/lib/ldb/aclocal.m4
@@ -1,12 +1 @@
-dnl see if a declaration exists for a function or variable
-dnl defines HAVE_function_DECL if it exists
-dnl AC_HAVE_DECL(var, includes)
-AC_DEFUN(AC_HAVE_DECL,
-[
- AC_CACHE_CHECK([for $1 declaration],ac_cv_have_$1_decl,[
-    AC_TRY_COMPILE([$2],[int i = (int)$1],
-        ac_cv_have_$1_decl=yes,ac_cv_have_$1_decl=no)])
- if test x"$ac_cv_have_$1_decl" = x"yes"; then
-    AC_DEFINE([HAVE_]translit([$1], [a-z], [A-Z])[_DECL],1,[Whether $1() is available])
- fi
-])
+m4_include(libreplace_macros.m4)
diff --git a/source4/lib/replace/aclocal.m4 b/source4/lib/replace/aclocal.m4
new file mode 100644
index 0000000000..2a7ad94963
--- /dev/null
+++ b/source4/lib/replace/aclocal.m4
@@ -0,0 +1 @@
+m4_include(libreplace_macros.m4)
diff --git a/source4/lib/replace/libreplace.m4 b/source4/lib/replace/libreplace.m4
index 0c1d089217..1b3258e184 100644
--- a/source4/lib/replace/libreplace.m4
+++ b/source4/lib/replace/libreplace.m4
@@ -1,15 +1,5 @@
-dnl see if a declaration exists for a function or variable
-dnl defines HAVE_function_DECL if it exists
-dnl AC_HAVE_DECL(var, includes)
-AC_DEFUN(AC_HAVE_DECL,
-[
- AC_CACHE_CHECK([for $1 declaration],ac_cv_have_$1_decl,[
-    AC_TRY_COMPILE([$2],[int i = (int)$1],
-        ac_cv_have_$1_decl=yes,ac_cv_have_$1_decl=no)])
- if test x"$ac_cv_have_$1_decl" = x"yes"; then
-    AC_DEFINE([HAVE_]translit([$1], [a-z], [A-Z])[_DECL],1,[Whether $1() is available])
- fi
-])
+
+LIBREPLACE_C99_STRUCT_INIT([],[])
 
 dnl find the libreplace sources. This is meant to work both for 
 dnl libreplace standalone builds, and builds of packages using libreplace
@@ -167,7 +157,6 @@ AC_CHECK_FUNCS([syslog memset setnetgrent getnetgrent endnetgrent memcpy],,
 			   [AC_MSG_ERROR([Required function not found])])
 
 m4_include(getpass.m4)
-m4_include(libreplace_macros.m4)
 m4_include(system/config.m4)
 
 LIBREPLACE_C99_STRUCT_INIT(c99_struct_initialization=yes,
diff --git a/source4/lib/replace/libreplace_macros.m4 b/source4/lib/replace/libreplace_macros.m4
index 255009dd55..9cf06c1a37 100644
--- a/source4/lib/replace/libreplace_macros.m4
+++ b/source4/lib/replace/libreplace_macros.m4
@@ -1,16 +1,11 @@
-dnl C99 compiler check
-dnl -------------------------------------------------------
-dnl  Copyright (C) Stefan (metze) Metzmacher 2004,2005
-dnl  Released under the GNU GPL
-dnl -------------------------------------------------------
-dnl
-dnl adapted for libreplace by Andrew Tridgell
+#
+# This is a collection of useful autoconf macros
+#
 
 ############################################
 # Check if the compiler handles c99 struct initialization, and if not try -AC99 and -c99 flags
 # Usage: LIBREPLACE_C99_STRUCT_INIT(success-action,failure-action)
 # changes CFLAGS to add -AC99 or -c99 if needed
-
 AC_DEFUN([LIBREPLACE_C99_STRUCT_INIT],
 [
 saved_CFLAGS="$CFLAGS";
@@ -51,3 +46,179 @@ else
     $2
 fi
 ])
+
+dnl AC_PROG_CC_FLAG(flag)
+AC_DEFUN(AC_PROG_CC_FLAG,
+[AC_CACHE_CHECK(whether ${CC-cc} accepts -$1, ac_cv_prog_cc_$1,
+[echo 'void f(){}' > conftest.c
+if test -z "`${CC-cc} -$1 -c conftest.c 2>&1`"; then
+  ac_cv_prog_cc_$1=yes
+else
+  ac_cv_prog_cc_$1=no
+fi
+rm -f conftest*
+])])
+
+dnl see if a declaration exists for a function or variable
+dnl defines HAVE_function_DECL if it exists
+dnl AC_HAVE_DECL(var, includes)
+AC_DEFUN(AC_HAVE_DECL,
+[
+ AC_CACHE_CHECK([for $1 declaration],ac_cv_have_$1_decl,[
+    AC_TRY_COMPILE([$2],[int i = (int)$1],
+        ac_cv_have_$1_decl=yes,ac_cv_have_$1_decl=no)])
+ if test x"$ac_cv_have_$1_decl" = x"yes"; then
+    AC_DEFINE([HAVE_]translit([$1], [a-z], [A-Z])[_DECL],1,[Whether $1() is available])
+ fi
+])
+
+
+# AC_CHECK_LIB_EXT(LIBRARY, [EXT_LIBS], [FUNCTION],
+#              [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
+#              [ADD-ACTION-IF-FOUND],[OTHER-LIBRARIES])
+# ------------------------------------------------------
+#
+# Use a cache variable name containing both the library and function name,
+# because the test really is for library $1 defining function $3, not
+# just for library $1.  Separate tests with the same $1 and different $3s
+# may have different results.
+#
+# Note that using directly AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$3])
+# is asking for trouble, since AC_CHECK_LIB($lib, fun) would give
+# ac_cv_lib_$lib_fun, which is definitely not what was meant.  Hence
+# the AS_LITERAL_IF indirection.
+#
+# FIXME: This macro is extremely suspicious.  It DEFINEs unconditionally,
+# whatever the FUNCTION, in addition to not being a *S macro.  Note
+# that the cache does depend upon the function we are looking for.
+#
+# It is on purpose we used `ac_check_lib_ext_save_LIBS' and not just
+# `ac_save_LIBS': there are many macros which don't want to see `LIBS'
+# changed but still want to use AC_CHECK_LIB_EXT, so they save `LIBS'.
+# And ``ac_save_LIBS' is too tempting a name, so let's leave them some
+# freedom.
+AC_DEFUN([AC_CHECK_LIB_EXT],
+[
+AH_CHECK_LIB_EXT([$1])
+ac_check_lib_ext_save_LIBS=$LIBS
+LIBS="-l$1 $$2 $7 $LIBS"
+AS_LITERAL_IF([$1],
+      [AS_VAR_PUSHDEF([ac_Lib_ext], [ac_cv_lib_ext_$1])],
+      [AS_VAR_PUSHDEF([ac_Lib_ext], [ac_cv_lib_ext_$1''])])dnl
+
+m4_ifval([$3],
+ [
+    AH_CHECK_FUNC_EXT([$3])
+    AS_LITERAL_IF([$1],
+              [AS_VAR_PUSHDEF([ac_Lib_func], [ac_cv_lib_ext_$1_$3])],
+              [AS_VAR_PUSHDEF([ac_Lib_func], [ac_cv_lib_ext_$1''_$3])])dnl
+    AC_CACHE_CHECK([for $3 in -l$1], ac_Lib_func,
+	[AC_TRY_LINK_FUNC($3,
+                 [AS_VAR_SET(ac_Lib_func, yes);
+		  AS_VAR_SET(ac_Lib_ext, yes)],
+                 [AS_VAR_SET(ac_Lib_func, no);
+		  AS_VAR_SET(ac_Lib_ext, no)])
+	])
+    AS_IF([test AS_VAR_GET(ac_Lib_func) = yes],
+        [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_$3))])dnl
+    AS_VAR_POPDEF([ac_Lib_func])dnl
+ ],[
+    AC_CACHE_CHECK([for -l$1], ac_Lib_ext,
+	[AC_TRY_LINK_FUNC([main],
+                 [AS_VAR_SET(ac_Lib_ext, yes)],
+                 [AS_VAR_SET(ac_Lib_ext, no)])
+	])
+ ])
+LIBS=$ac_check_lib_ext_save_LIBS
+
+AS_IF([test AS_VAR_GET(ac_Lib_ext) = yes],
+    [m4_default([$4], 
+        [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
+		case "$$2" in
+		    *-l$1*)
+			;;
+		    *)
+			$2="-l$1 $$2"
+			;;
+		esac])
+		[$6]
+	    ],
+	    [$5])dnl
+AS_VAR_POPDEF([ac_Lib_ext])dnl
+])# AC_CHECK_LIB_EXT
+
+# AH_CHECK_LIB_EXT(LIBNAME)
+# ---------------------
+m4_define([AH_CHECK_LIB_EXT],
+[AH_TEMPLATE(AS_TR_CPP(HAVE_LIB$1),
+             [Define to 1 if you have the `]$1[' library (-l]$1[).])])
+
+dnl AC_SEARCH_LIBS_EXT(FUNCTION, SEARCH-LIBS, EXT_LIBS,
+dnl                    [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
+dnl                    [OTHER-LIBRARIES])
+dnl --------------------------------------------------------
+dnl Search for a library defining FUNC, if it's not already available.
+AC_DEFUN([AC_SEARCH_LIBS_EXT],
+[AC_CACHE_CHECK([for library containing $1], [ac_cv_search_ext_$1],
+[
+ac_func_search_ext_save_LIBS=$LIBS
+ac_cv_search_ext_$1=no
+AC_LINK_IFELSE([AC_LANG_CALL([], [$1])],
+	       [ac_cv_search_ext_$1="none required"])
+if test "$ac_cv_search_ext_$1" = no; then
+  for ac_lib in $2; do
+    LIBS="-l$ac_lib $$3 $6 $ac_func_search_save_ext_LIBS"
+    AC_LINK_IFELSE([AC_LANG_CALL([], [$1])],
+		   [ac_cv_search_ext_$1="-l$ac_lib"
+break])
+  done
+fi
+LIBS=$ac_func_search_ext_save_LIBS])
+AS_IF([test "$ac_cv_search_ext_$1" != no],
+  [test "$ac_cv_search_ext_$1" = "none required" || $3="$ac_cv_search_ext_$1 $$3"
+  $4],
+      [$5])dnl
+])
+
+dnl check for a function in a $LIBS and $OTHER_LIBS libraries variable.
+dnl AC_CHECK_FUNC_EXT(func,OTHER_LIBS,IF-TRUE,IF-FALSE)
+AC_DEFUN([AC_CHECK_FUNC_EXT],
+[
+    AH_CHECK_FUNC_EXT($1)	
+    ac_check_func_ext_save_LIBS=$LIBS
+    LIBS="$2 $LIBS"
+    AS_VAR_PUSHDEF([ac_var], [ac_cv_func_ext_$1])dnl
+    AC_CACHE_CHECK([for $1], ac_var,
+	[AC_LINK_IFELSE([AC_LANG_FUNC_LINK_TRY([$1])],
+                [AS_VAR_SET(ac_var, yes)],
+                [AS_VAR_SET(ac_var, no)])])
+    LIBS=$ac_check_func_ext_save_LIBS
+    AS_IF([test AS_VAR_GET(ac_var) = yes], 
+	    [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$1])) $3], 
+	    [$4])dnl
+AS_VAR_POPDEF([ac_var])dnl
+])# AC_CHECK_FUNC
+
+# AH_CHECK_FUNC_EXT(FUNCNAME)
+# ---------------------
+m4_define([AH_CHECK_FUNC_EXT],
+[AH_TEMPLATE(AS_TR_CPP(HAVE_$1),
+             [Define to 1 if you have the `]$1[' function.])])
+
+dnl Define an AC_DEFINE with ifndef guard.
+dnl AC_N_DEFINE(VARIABLE [, VALUE])
+define(AC_N_DEFINE,
+[cat >> confdefs.h <<\EOF
+[#ifndef] $1
+[#define] $1 ifelse($#, 2, [$2], $#, 3, [$2], 1)
+[#endif]
+EOF
+])
+
+dnl Add an #include
+dnl AC_ADD_INCLUDE(VARIABLE)
+define(AC_ADD_INCLUDE,
+[cat >> confdefs.h <<\EOF
+[#include] $1
+EOF
+])
diff --git a/source4/lib/talloc/aclocal.m4 b/source4/lib/talloc/aclocal.m4
new file mode 100644
index 0000000000..2a7ad94963
--- /dev/null
+++ b/source4/lib/talloc/aclocal.m4
@@ -0,0 +1 @@
+m4_include(libreplace_macros.m4)
diff --git a/source4/lib/tdb/aclocal.m4 b/source4/lib/tdb/aclocal.m4
index cdc2a2fa52..2a7ad94963 100644
--- a/source4/lib/tdb/aclocal.m4
+++ b/source4/lib/tdb/aclocal.m4
@@ -1,12 +1 @@
-dnl see if a declaration exists for a function or variable
-dnl defines HAVE_function_DECL if it exists
-dnl AC_HAVE_DECL(var, includes)
-AC_DEFUN(AC_HAVE_DECL,
-[
- AC_CACHE_CHECK([for $1 declaration],ac_cv_have_$1_decl,[
-    AC_TRY_COMPILE([$2],[int i = (int)$1],
-        ac_cv_have_$1_decl=yes,ac_cv_have_$1_decl=no)])
- if test x"$ac_cv_have_$1_decl" = x"yes"; then
-    AC_DEFINE([HAVE_]translit([$1], [a-z], [A-Z])[_DECL],1,[Whether $1() is available])
- fi
-])
+m4_include(libreplace_macros.m4)