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build: support -no_fixup_chains in ld64

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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.
This commit is contained in:
fanquake 2023-06-29 11:54:31 +01:00
parent d4018f0b6c
commit 3dca683cb7
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GPG key ID: 2EEB9F5CC09526C1
2 changed files with 28 additions and 2 deletions
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7
depends/packages/native_cctools.mk
View file

@ -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

23
depends/patches/native_cctools/no_fixup_chains.patch Normal file
View file

@ -0,0 +1,23 @@
commit 5860b35ff6c7241d1c35a1b3197b45e5c9ff86cf
Author: fanquake <fanquake@gmail.com>
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;
}