## Added compilers
- gcc: 4.[4678], 5, 6, 11
- clang: 3.[56789], 4, 5, 12
## Known issue
- make -C tests test-lz4c32
- Fails with all versions of clang. See #991 for details.
- CFLAGS='-O3 -mx32' make -C tests test-lz4c32
- Fails with all versions of clang
- Fails with gcc-11
- `make cxxtest`
- Disabled for now. Will be enabled after #993.
- `make c_standards_c90`, `make c_standards_c11`
- Disabled for now. Will be enabled after #994.
## Difference with `.travis.yml`
The following tests are not included yet.
- name: Compile OSS-Fuzz targets
- name: tag build
The following tests won't be included due to lmitation of the CI environment.
- name: aarch64 real-hw tests
- name: PPC64LE real-hw tests
- name: IBM s390x real-hw tests
Except above, all other features in `.travis.yml` has been included in this change set.
The following post describes details.
The following command doesn't work as intended
```
cd
git clone https://github.com/lz4/lz4.git
cd lz4
make usan MOREFLAGS='-Wcomma -Werror'
```
```
Cleaning completed
cc: error: unrecognized command line option ‘-Wcomma’; did you mean ‘-Wcomment’?
make[3]: *** [<builtin>: ../lib/lz4.o] Error 1
make[2]: *** [Makefile:65: lz4] Error 2
make[1]: *** [Makefile:133: test] Error 2
make: *** [Makefile:158: usan] Error 2
```
Because the following part of the `Makefile` doesn't propagate `CC`, `CFLAGS` and `LDFLAGS` to child `$(MAKE)` properly.
```
.PHONY: usan
usan: CC = clang
usan: CFLAGS = -O3 -g -fsanitize=undefined -fno-sanitize-recover=undefined -fsanitize-recover=pointer-overflow
usan: LDFLAGS = $(CFLAGS)
usan: clean
$(MAKE) test FUZZER_TIME="-T30s" NB_LOOPS=-i1
```
We need explicit propagation for child process
```
- $(MAKE) test FUZZER_TIME="-T30s" NB_LOOPS=-i1
+ CC=$(CC) CFLAGS=$(CFLAGS) LDFLAGS=$(LDFLAGS) $(MAKE) test FUZZER_TIME="-T30s" NB_LOOPS=-i1
```
After that, `make usan` works and it shows expected runtime error.
```
$ make usan MOREFLAGS='-Wcomma -Werror'
Cleaning completed
../lib/lz4frame.c:907:25: runtime error: applying non-zero offset 65536 to null pointer
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../lib/lz4frame.c:907:25 in
../lib/lz4frame.c:907:58: runtime error: applying zero offset to null pointer
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../lib/lz4frame.c:907:58 in
...
```
Please note that `make usan` is working at travis-ci. Because `.travis.yml` has the following [explicit `compiler:` setting](7a966c1511/.travis.yml (L66)).
```
- name: (Trusty) USan test
dist: trusty
compiler: clang
script:
- make usan MOREFLAGS=-Wcomma -Werror
```
