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OpenBSD build update and llvm mode fix

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Unlike upstream version, LLVM in OpenBSD enable by default anti ROP gadget
 leading to bigger binaries and lower performances.
On OpenBSD, it needs to link to c++ abi for th unwind symbols.
This commit is contained in:
David Carlier
2020-05-30 19:28:47 +01:00
parent 4a54328901
commit 0adb664a31
2 changed files with 5 additions and 1 deletions
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2
GNUmakefile
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@ -100,7 +100,7 @@ ifeq "$(shell uname -s)" "DragonFly"
endif
ifeq "$(shell uname -s)" "OpenBSD"
override CFLAGS += -I /usr/local/include/
override CFLAGS += -I /usr/local/include/ -mno-retpoline
LDFLAGS += -Wl,-z,notext -L /usr/local/lib/
endif

4
llvm_mode/GNUmakefile
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@ -226,6 +226,10 @@ endif
ifeq "$(shell uname)" "OpenBSD"
CLANG_LFL += `$(LLVM_CONFIG) --libdir`/libLLVM.so
CLANG_CFL += -mno-retpoline
CFLAGS += -mno-retpoline
# Needed for unwind symbols
LDFLAGS += -lc++abi
endif
ifeq "$(shell echo '$(HASH)include <sys/ipc.h>@$(HASH)include <sys/shm.h>@int main() { int _id = shmget(IPC_PRIVATE, 65536, IPC_CREAT | IPC_EXCL | 0600); shmctl(_id, IPC_RMID, 0); return 0;}' | tr @ '\n' | $(CC) -x c - -o .test2 2>/dev/null && echo 1 || echo 0 ; rm -f .test2 )" "1"