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llvm compile fix

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This commit is contained in:
van Hauser
2019-06-03 13:10:27 +02:00
parent 835b84fc49
commit 14bfde3f78
4 changed files with 15 additions and 8 deletions
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3
docs/ChangeLog
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@ -27,8 +27,7 @@ Version ++2.52c (2019-05-28):
to the AFL schedule, not to the FAST schedule. So nothing changes unless
you use the new -p option :-) - see docs/power_schedules.txt
- added afl-system-config script to set all system performance options for fuzzing
- llvm_mode is currently configured to work with llvm 5.0 and 6.0.
To compile with 3.9 or 4.0 you must change CXX to clang++ in llvm_mode/Makefile
- llvm_mode works with llvm 3.9 up to including 6.0.1
---------------------------

2
docs/README
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@ -119,7 +119,7 @@ The clang wrappers (afl-clang and afl-clang++) can be used in the same way;
clang users may also opt to leverage a higher-performance instrumentation mode,
as described in llvm_mode/README.llvm.
Clang/LLVM has a much better performance, but only works with LLVM up to and
including 6.0.
including 6.0.1.
Using the LAF Intel performance enhancements are also recommended, see
docs/README.laf-intel

11
llvm_mode/Makefile
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@ -23,6 +23,12 @@ BIN_PATH = $(PREFIX)/bin
VERSION = $(shell grep '^\#define VERSION ' ../config.h | cut -d '"' -f2)
LLVM_CONFIG ?= llvm-config
LLVM_OK = $(shell $(LLVM_CONFIG) --version | egrep -q '^[5-6]' && echo 0 || echo 1 )
LLVM_UNSUPPORTED = $(shell $(LLVM_CONFIG) --version | egrep -q '^[7-9]' && echo 1 || echo 0 )
ifeq "$(LLVM_UNSUPPORTED)" "1"
$(error llvm_mode only supports versions 3.9 up to 6.0.1 )
endif
CFLAGS ?= -O3 -funroll-loops
CFLAGS += -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign \
@ -51,8 +57,11 @@ endif
ifeq "$(origin CC)" "default"
CC = clang
# if you use llvm 3.9 or 4.0 switch this to clang++ below
ifeq "$(LLVM_OK)" "1"
CXX = clang++
else
CXX = g++
endif
endif
ifndef AFL_TRACE_PC

5
llvm_mode/README.llvm
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@ -7,9 +7,8 @@ Fast LLVM-based instrumentation for afl-fuzz
1) Introduction
---------------
! llvm_mode is currently configured to compile with llvm 5.0 and 6.0 via g++ !
! To compile with llvm 3.9 and 4.0 edit the Makefile and change CXX to clang++ !
! Fixes for llvm 3.7, 7 and 8 are in the work !
! llvm_mode works with verison 3.0 up to 6.0.1 !
! llvm version 7, 8 and 9 do not work !
The code in this directory allows you to instrument programs for AFL using
true compiler-level instrumentation, instead of the more crude