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debian: support building a single deb for multiple py3 versions...
debian: support building a single deb for multiple py3 versions Around transitions from one python minor version to another (such as 3.7 to 3.8), the current packaging can be slightly problematic - it produces a `control` file that requires that the version of `python3` that's installed be exactly the one that was used on the build machine for the `mercurial` package, by containing a line like: Depends: sensible-utils, libc6 (>= 2.14), python3 (<< 3.8), python3 (>= 3.7~), python3:any (>= 3.5~) This is because it "knows" we only built for v3.7, which is the current default on my system. By building the native components for multiple versions, we can make it produce a line like this, which is compatible with 3.7 AND 3.8: Depends: sensible-utils, libc6 (>= 2.14), python3 (<< 3.9), python3 (>= 3.7~), python3:any (>= 3.5~) This isn't *normally* required, so I'm not making it the default. For those that receive their python3 and mercurial packages from their distro, and/or don't have to worry about a situation where the team that manages the python3 installation isn't the same as the team that manages the mercurial installation, this is probably not necessary. I chose the names `DEB_HG_*` because `DEB_*` is passed through `debuild` automatically (otherwise we'd have to explicitly allow the options through, which is a nuisance), and the `HG` part is to make it clear that this isn't a "standard" debian option that other packages might respect. Test Plan: 1. "nothing changed": - built a deb without these changes - built a deb with these changes but everything at the default - used diffoscope to compare, all differences were due to timestamps 2. "explicit is the same as implicit" (single version) - built a deb with everything at the default - built a deb with DEB_HG_PYTHON_VERSIONS=3.7 - used diffoscope to compare, all differences were due to timestamps 3. "explicit is the same as implicit" (multi version) - built a deb with DEB_HG_MULTI_VERSION=1 - built a deb with DEB_HG_PYTHON_VERSIONS=3.7 - used diffoscope to compare, all differences were due to timestamps 4. (single version, 3.7) doesn't work with python3.8 - `/usr/bin/python3.7 /usr/bin/hg debuginstall` works - `/usr/bin/python3.8 /usr/bin/hg debuginstall` crashes 5. (multi version, 3.7 + 3.8) - `/usr/bin/python3.7 /usr/bin/hg debuginstall` works - `/usr/bin/python3.8 /usr/bin/hg debuginstall` works Differential Revision: https://phab.mercurial-scm.org/D8642
Augie Fackler - - Load All Authors

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Makefile
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CC = clang
CXX = clang++
# By default, use our own standalone_fuzz_target_runner.
# This runner does no fuzzing, but simply executes the inputs
# provided via parameters.
# Run e.g. "make all LIB_FUZZING_ENGINE=/path/to/libFuzzer.a"
# to link the fuzzer(s) against a real fuzzing engine.
#
# OSS-Fuzz will define its own value for LIB_FUZZING_ENGINE.
LIB_FUZZING_ENGINE ?= standalone_fuzz_target_runner.o
PYTHON_CONFIG ?= $$OUT/sanpy/bin/python-config
PYTHON_CONFIG_FLAGS ?= --ldflags
CXXFLAGS += -Wno-deprecated-register
all: standalone_fuzz_target_runner.o oss-fuzz
standalone_fuzz_target_runner.o: standalone_fuzz_target_runner.cc
$$OUT/%_fuzzer_seed_corpus.zip: %_corpus.py
python $< $@
pyutil.o: pyutil.cc pyutil.h
$(CXX) $(CXXFLAGS) -g -O1 \
`$(PYTHON_CONFIG) --cflags` \
-I../../mercurial -c -o pyutil.o pyutil.cc
bdiff-oss-fuzz.o: ../../mercurial/bdiff.c
$(CC) $(CFLAGS) -c -o bdiff-oss-fuzz.o ../../mercurial/bdiff.c
bdiff_fuzzer: bdiff.cc bdiff-oss-fuzz.o
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial bdiff.cc \
bdiff-oss-fuzz.o $(LIB_FUZZING_ENGINE) -o \
$$OUT/bdiff_fuzzer
mpatch.o: ../../mercurial/mpatch.c
$(CC) -g -O1 -fsanitize=fuzzer-no-link,address -c -o mpatch.o \
../../mercurial/mpatch.c
mpatch-oss-fuzz.o: ../../mercurial/mpatch.c
$(CC) $(CFLAGS) -c -o mpatch-oss-fuzz.o ../../mercurial/mpatch.c
mpatch_fuzzer: mpatch.cc mpatch-oss-fuzz.o $$OUT/mpatch_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial mpatch.cc \
mpatch-oss-fuzz.o $(LIB_FUZZING_ENGINE) -o \
$$OUT/mpatch_fuzzer
fuzz-x%.o: ../../mercurial/thirdparty/xdiff/x%.c ../../mercurial/thirdparty/xdiff/*.h
$(CC) $(CFLAGS) -c \
-o $@ \
$<
xdiff_fuzzer: xdiff.cc fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial xdiff.cc \
fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o \
$(LIB_FUZZING_ENGINE) -o $$OUT/xdiff_fuzzer
parsers-%.o: ../../mercurial/cext/%.c
$(CC) -I../../mercurial `$(PYTHON_CONFIG) --cflags` $(CFLAGS) -c \
-o $@ $<
PARSERS_OBJS=parsers-manifest.o parsers-charencode.o parsers-parsers.o parsers-dirs.o parsers-pathencode.o parsers-revlog.o
dirs_fuzzer: dirs.cc pyutil.o $(PARSERS_OBJS) $$OUT/dirs_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial dirs.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/dirs_fuzzer
fncache_fuzzer: fncache.cc
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial fncache.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/fncache_fuzzer
jsonescapeu8fast_fuzzer: jsonescapeu8fast.cc pyutil.o $(PARSERS_OBJS)
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial jsonescapeu8fast.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/jsonescapeu8fast_fuzzer
manifest_fuzzer: manifest.cc pyutil.o $(PARSERS_OBJS) $$OUT/manifest_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial manifest.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/manifest_fuzzer
revlog_fuzzer: revlog.cc pyutil.o $(PARSERS_OBJS) $$OUT/revlog_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial revlog.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/revlog_fuzzer
dirstate_fuzzer: dirstate.cc pyutil.o $(PARSERS_OBJS) $$OUT/dirstate_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial dirstate.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/dirstate_fuzzer
fm1readmarkers_fuzzer: fm1readmarkers.cc pyutil.o $(PARSERS_OBJS) $$OUT/fm1readmarkers_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial fm1readmarkers.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/fm1readmarkers_fuzzer
clean:
$(RM) *.o *_fuzzer \
bdiff \
mpatch \
xdiff
oss-fuzz: bdiff_fuzzer mpatch_fuzzer xdiff_fuzzer dirs_fuzzer fncache_fuzzer jsonescapeu8fast_fuzzer manifest_fuzzer revlog_fuzzer dirstate_fuzzer fm1readmarkers_fuzzer
.PHONY: all clean oss-fuzz