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... to improve portability
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... by disabling auto-configuration. The problem that the result
of this auto-configuration depends on the language standard used
and may (and in case of libproto does) leak into public interfaces
of consuming libraries; this would require every user of a library
with a public dependency of absl to use the same language standard
that library was built with. Such a requirement makes the rules
hard to use in a portable way.
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... and use "linux" as default for OS. If TARGET_ARCH is
"arm" or not set, link against -latomic (for required
targets).
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... to pass along toolchain settings for current and future
toolchain definitions. Configuration variable
COMPILER_FAMILY is replaced by TOOLCHAIN_CONFIG["FAMILY"].
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Also adds the extra targets needed by protobuf v23.4, which now has
a dependency on abseil, and by grpc v1.56.2.
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Co-authored-by: Paul Cristian Sarbu <paul.cristian.sarbu@huawei.com>
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Compared to the previous commit, the action graphs for just
and its unit tests are unchanged.
- Git hash of action graph for ["",""]:
c6e75f17abd7ffaab6ff9bb725ad67ec0bf6c973
- Git hash of action graph for ["test/buildtool","TESTS"]:
8063dfb3dd7daa9ae01d95c177e14946f785c57e
Refactor:
- "local cflags" to "private-cflags"
- "local defines" to "private-defines"
- "link externals" to "private-ldflags"
- "deps" to "private-deps" for (test) binaries
- "proto" to "private-proto" for binaries
Improvements:
- consistent variable declaration order:
OS, ARCH, HOST_ARCH, TARGET_ARCH,
CC, CXX, CFLAGS, CXXFLAGS, ADD_CFLAGS, ADD_CXXFLAGS,
AR, ENV, PATH
- use fields close to their definition (in RULES)
- use common expression for binaries and test binaries
- split expression "flags" and "compiler"
... to separate ones for CC and CXX.
- rename "transition" to "deps-transition"
... to avoid conflicts with other transitions.
- support "defaults-transition" for CC expressions
Implement:
- "cflags" for libraries
- "private-cflags" for (test) binaries
- "private-defines" for test binaries
- "private-ldflags" for test binaries
- (public) "defines" for libraries
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This is the initial version of our tool that is able to
build itself. In can be bootstrapped by
./bin/bootstrap.py
Co-authored-by: Oliver Reiche <oliver.reiche@huawei.com>
Co-authored-by: Victor Moreno <victor.moreno1@huawei.com>
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