build: support -no_fixup_chains in ld64

Patch in suport for using -no_fixup_chains, with ld64. This option just
seems to be missing from our version, as it exists in later releases.

This is needed so we can disable fixup_chains in our security checks.

Author: fanquake

depends/packages/native_cctools.mk

@@ -5,6 +5,7 @@ $(package)_file_name=$($(package)_version).tar.gz
 $(package)_sha256_hash=6b73269efdf5c58a070e7357b66ee760501388549d6a12b423723f45888b074b
 $(package)_build_subdir=cctools
 $(package)_dependencies=native_libtapi
+$(package)_patches=no_fixup_chains.patch
 
 define $(package)_set_vars
   $(package)_config_opts=--target=$(host) --enable-lto-support
@@ -18,11 +19,13 @@ ifneq ($(strip $(FORCE_USE_SYSTEM_CLANG)),)
 define $(package)_preprocess_cmds
   mkdir -p $($(package)_staging_prefix_dir)/lib && \
   cp $(llvm_lib_dir)/libLTO.so $($(package)_staging_prefix_dir)/lib/ && \
-  cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub cctools
+  cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub cctools && \
+  patch -p1 < $($(package)_patch_dir)/no_fixup_chains.patch
 endef
 else
 define $(package)_preprocess_cmds
-  cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub cctools
+  cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub cctools && \
+  patch -p1 < $($(package)_patch_dir)/no_fixup_chains.patch
 endef
 endif
 

depends/patches/native_cctools/no_fixup_chains.patch

@@ -0,0 +1,23 @@
+commit 5860b35ff6c7241d1c35a1b3197b45e5c9ff86cf
+Author: fanquake <[email protected]>
+Date:   Thu Jun 29 11:52:43 2023 +0100
+
+    ld64: add support for -no_fixup_chains
+    
+    This is added in later versions, and is required if we want to be able
+    to disable fixup_chains, for use in security tests.
+
+diff --git a/cctools/ld64/src/ld/Options.cpp b/cctools/ld64/src/ld/Options.cpp
+index 15e8e88..b6580af 100644
+--- a/cctools/ld64/src/ld/Options.cpp
++++ b/cctools/ld64/src/ld/Options.cpp
+@@ -4128,6 +4128,9 @@ void Options::parse(int argc, const char* argv[])
+ 			else if ( strcmp(arg, "-fixup_chains") == 0 ) {
+ 				fMakeChainedFixups = true;
+ 			}
++			else if ( strcmp(arg, "-no_fixup_chains") == 0 ) {
++				fMakeChainedFixups = false;
++			}
+ 			else if (strcmp(arg, "-debug_variant") == 0) {
+ 			    fDebugVariant = true;
+             }