From ea2ea538c6a308bfc1ca17142ad3e272f5758e80 Mon Sep 17 00:00:00 2001
From: dos-reis <gdr@axiomatics.org>
Date: Tue, 24 Aug 2010 14:42:22 +0000
Subject: 	Implement an s-expression C++ library. 	* utils/hash-table.H:
 New. 	* utils/sexpr.H: Likewise. 	* utils/sexpr.cc: Likewise. 	*
 utils/string-pool.H: Likewise. 	* utils/string-pool.cc: Likewise. 
 * utils/storage.H: Include openaxiom-c-macros.h 	(Memory::Storage):
 New. 	(Memory::Arena): Likewise. 	* utils/storage.cc: Implement member
 functions of new class. 	* utils/Makefile.in (libOpenAxiom_HEADERS):
 Include hash-table.H, 	string-pool.H, and sexpr.H 
 (libOpenAxiom_SOURCES): Include string-pool.cc and sexpr.cc

---
 config/open-axiom.m4           | 20 ++++++++++++++++++++
 config/openaxiom-c-macros.h.in |  3 +++
 2 files changed, 23 insertions(+)

(limited to 'config')

diff --git a/config/open-axiom.m4 b/config/open-axiom.m4
index a2e26e8b..d7de600a 100644
--- a/config/open-axiom.m4
+++ b/config/open-axiom.m4
@@ -1010,10 +1010,30 @@ if test x"$ac_cv_header_sys_mman_h" = xyes; then
 fi
 ])
 
+dnl ----------------------------------
+dnl -- OPENAXIOM_ALIGNMENT_OPERATOR --
+dnl ----------------------------------
+dnl Check that the C/C++ compiler understand
+dnl alignment operator, i.e. either `alignof',
+dnl or vendor lock-ins such as `__alignof'.
+AC_DEFUN([OPENAXIOM_ALIGNMENT_OPERATOR],[
+AC_MSG_CHECKING([name of alignment query operator])
+oa_alignment=
+AC_COMPILE_IFELSE([int a = __alignof(int);],
+                  [oa_alignment="__alignof"],
+                  [AC_COMPILE_IFELSE([int a = alignof(int);],
+                                     [oa_alignment="alignof"],
+                                     [AC_MSG_ERROR([C/C++ compiler does not support alignment query operator])])])
+AC_DEFINE_UNQUOTED([openaxiom_alignment],[$oa_alignment],
+                   [Alignment query operator])
+AC_MSG_RESULT([$oa_alignment])
+])
+
 dnl --------------------------
 dnl -- OPENAXIOM_CHECK_MISC --
 dnl --------------------------
 AC_DEFUN([OPENAXIOM_CHECK_MISC],[
+OPENAXIOM_ALIGNMENT_OPERATOR
 case $GCC in
   yes)
      CFLAGS="$CFLAGS -O2 -Wall"
diff --git a/config/openaxiom-c-macros.h.in b/config/openaxiom-c-macros.h.in
index c92cc8ac..41b47835 100644
--- a/config/openaxiom-c-macros.h.in
+++ b/config/openaxiom-c-macros.h.in
@@ -207,6 +207,9 @@
    if such a type exists, and if the system does not define it. */
 #undef intptr_t
 
+/* Alignment query operator */
+#undef openaxiom_alignment
+
 /* Define to the type of an unsigned integer type of width exactly 16 bits if
    such a type exists and the standard includes do not define it. */
 #undef uint16_t
-- 
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