Autoconfifying - beginning.

[adns.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
new file mode 100644 (file)
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+++ b/aclocal.m4
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+# aclocal.m4 - package-specific macros for autoconf
+#  
+#  This file is part of adns, which is Copyright (C) 1997-1999 Ian Jackson
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2, or (at your option)
+#  any later version.
+#  
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#  
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
+
+dnl DPKG_CACHED_TRY_COMPILE(<description>,<cachevar>,<include>,<program>,<ifyes>,<ifno>)
+define(DPKG_CACHED_TRY_COMPILE,[
+ AC_MSG_CHECKING($1)
+ AC_CACHE_VAL($2,[
+  AC_TRY_COMPILE([$3],[$4],[$2=yes],[$2=no])
+ ])
+ if test "x$$2" = xyes; then
+  true
+  $5
+ else
+  true
+  $6
+ fi
+])
+
+define(ADNS_C_GCCATTRIB,[
+ DPKG_CACHED_TRY_COMPILE(__attribute__((,,)),adns_cv_c_attribute_supported,,
+  [extern int testfunction(int x) __attribute__((,,))],
+  AC_MSG_RESULT(yes)
+  AC_DEFINE(HAVE_GNUC25_ATTRIB)
+   DPKG_CACHED_TRY_COMPILE(__attribute__((noreturn)),adns_cv_c_attribute_noreturn,,
+    [extern int testfunction(int x) __attribute__((noreturn))],
+    AC_MSG_RESULT(yes)
+    AC_DEFINE(HAVE_GNUC25_NORETURN),
+    AC_MSG_RESULT(no))
+   DPKG_CACHED_TRY_COMPILE(__attribute__((const)),adns_cv_c_attribute_const,,
+    [extern int testfunction(int x) __attribute__((const))],
+    AC_MSG_RESULT(yes)
+    AC_DEFINE(HAVE_GNUC25_CONST),
+    AC_MSG_RESULT(no))
+   DPKG_CACHED_TRY_COMPILE(__attribute__((format...)),adns_cv_attribute_format,,
+    [extern int testfunction(char *y, ...) __attribute__((format(printf,1,2)))],
+    AC_MSG_RESULT(yes)
+    AC_DEFINE(HAVE_GNUC25_PRINTFFORMAT),
+    AC_MSG_RESULT(no)),
+  AC_MSG_RESULT(no))
+])