clang++-16 has moved to gnu++17 as a default, which takes out the
definition of unexpected_handler in include/c++/v1/exception.
The diff below lets me build libobjc2 using llvm-16.
ok?
Index: Makefile
===================================================================
RCS file: /home/cvs/ports/x11/gnustep/libobjc2/Makefile,v
diff -u -p -r1.31 Makefile
--- Makefile 10 Dec 2022 20:22:09 -0000 1.31
+++ Makefile 10 Nov 2023 15:14:50 -0000
@@ -9,7 +9,7 @@ GH_PROJECT = libobjc2
GH_TAGNAME = v${VERSION}
DISTNAME = libobjc2-${VERSION:S/_//}
PKGNAME = gnustep-${DISTNAME}
-REVISION = 6
+REVISION = 7
SHARED_LIBS += objc2 1.1
SHARED_LIBS += objcxx 0.0
Index: patches/patch-objcxx_eh_cc
===================================================================
RCS file: patches/patch-objcxx_eh_cc
diff -N patches/patch-objcxx_eh_cc
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-objcxx_eh_cc 10 Nov 2023 15:20:12 -0000
@@ -0,0 +1,32 @@
+Fix build with llvm-16:
+/usr/ports/pobj/gnustep-libobjc2-1.8.1/libobjc2-1.8.1/objcxx_eh.cc:76:2:
error: unknown type name 'unexpected_handler'
+ unexpected_handler unexpectedHandler;
+
+https://github.com/gnustep/libobjc2/commit/0ae4e4ceb77410c619bf597d6f0b0842d5f078a6
+
+Index: objcxx_eh.cc
+--- objcxx_eh.cc.orig
++++ objcxx_eh.cc
+@@ -2,7 +2,6 @@
+ #include <stdio.h>
+ #include "dwarf_eh.h"
+ #include "objcxx_eh.h"
+-#include <exception>
+
+ extern "C"
+ {
+@@ -14,6 +13,14 @@ namespace __cxxabiv1
+ }
+
+ using __cxxabiv1::__class_type_info;
++
++// Define some C++ ABI types here, rather than including them. This prevents
++// conflicts with the libstdc++ headers, which expose only a subset of the
++// type_info class (the part required for standards compliance, not the
++// implementation details).
++
++typedef void (*unexpected_handler)();
++typedef void (*terminate_handler)();
+
+ namespace std
+ {
--
jca | PGP : 0x1524E7EE / 5135 92C1 AD36 5293 2BDF DDCC 0DFA 74AE 1524 E7EE
