# AT_DATA_SOURCE_PROLOGUE
-# ------------------------
+# -----------------------
# The prologue that should be included in any source code that is
-# meant to be compiled.
+# meant to be compiled. Keep atlocal.in sync (BISON_CXX_WORKS).
m4_define([AT_DATA_SOURCE_PROLOGUE],
[[#include <config.h>
/* We don't need perfect functions for these tests. */
# ----------------------------------------------------------
# Check that warnings (if some are expected) are correctly
# turned into errors with -Werror, etc.
+#
+# When -Wno-error is used, the rules are really different, don't try.
m4_define([AT_BISON_CHECK_WARNINGS],
[m4_if(m4_bregexp([$4], [: warning: ]), [-1], [],
- [m4_null_if([$2], [AT_BISON_CHECK_WARNINGS_($@)])])])
+ m4_bregexp([$1], [-Wno-error=]), [-1],
+ [m4_null_if([$2], [AT_BISON_CHECK_WARNINGS_($@)])])])
m4_define([AT_BISON_CHECK_WARNINGS_],
[[# Defining POSIXLY_CORRECT causes bison to complain if options are
[m4_bmatch([$1], [[.]], [], [$LIBS])]),
0, [ignore], [ignore])])
+
# AT_COMPILE_CXX(OUTPUT, [SOURCES = OUTPUT.cc])
# ---------------------------------------------
# Compile SOURCES into OUTPUT. If the C++ compiler does not work,
#
# If OUTPUT does not contain '.', assume that we are linking too,
# otherwise pass "-c"; this is a hack. The default SOURCES is OUTPUT
-# with trailing .o removed, and ".cc" appended.
+# with trailing ".o" removed, and ".cc" appended.
m4_define([AT_COMPILE_CXX],
[AT_KEYWORDS(c++)
AT_CHECK([$BISON_CXX_WORKS], 0, ignore, ignore)
])
+# AT_SKIP_IF_EXCEPTION_SUPPORT_IS_POOR
+# ------------------------------------
+# Check that we can expect exceptions to be handled properly.
+# GCC 4.3 and 4.4 fail https://trac.macports.org/ticket/40853.
+m4_define([AT_SKIP_IF_EXCEPTION_SUPPORT_IS_POOR],
+[AT_DATA_SOURCE([exception.cc],
+[[#include <iostream>
+#include <stdexcept>
+
+void foo()
+{
+ try
+ {
+ throw std::runtime_error("foo");
+ }
+ catch (...)
+ {
+ std::cerr << "Inner caught" << std::endl;
+ throw;
+ }
+}
+
+int main()
+{
+ try
+ {
+ foo();
+ }
+ catch (...)
+ {
+ std::cerr << "Outer caught" << std::endl;
+ return 0;
+ }
+ return 1;
+}
+]])
+AT_COMPILE_CXX([exception])
+# The "empty" quadrigraph is to protect from cfg.mk's
+# sc_at_parser_check.
+AT_CHECK([@&t@./exception || exit 77], [0], [], [ignore])
+])
+
+
## ---------------------------- ##
## Running a generated parser. ##
## ---------------------------- ##