On Fri, Sep 11, 2020 at 10:57:34AM +1000, David Gibson wrote:
> On Thu, Sep 10, 2020 at 07:16:19PM +0000, Kirill Smelkov wrote:
> > With current Debian testing I get:
> > 
> >     tools/ccanlint/ccanlint -s --deps-fail-ignore   ccan/compiler/ && touch 
> > ccan/compiler/.ok
> >     compiler: Module tests compile (tests_compile): FAIL
> >     
> > /home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/ccan/compiler/test/run-is_compile_constant.c:Compile
> >  failed:
> >     /usr/bin/ld: 
> > /tmp/ccanlint-129350.1804289383/tap.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/ccan/tap/tap.h:249:
> >  multiple definition of `tap_fail_callback'; 
> > /tmp/ccrAwqbl.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/ccan/tap/tap.h:249:
> >  first defined here
> >     collect2: error: ld returned 1 exit status
> >     ...
> > 
> >     cc -g3 -ggdb -Wall -Wstrict-prototypes -Wold-style-definition -Wundef 
> > -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wwrite-strings 
> > -DCCAN_STR_DEBUG=1 -I.  -MMD -MP -MFtools/ccanlint/ccanlint.d 
> > -MTtools/ccanlint/ccanlint tools/ccanlint/ccanlint.c tools/ccanlint/async.o 
> > tools/ccanlint/file_analysis.o tools/ccanlint/licenses.o 
> > tools/ccanlint/tests/avoids_cpp_reserved.o 
> > tools/ccanlint/tests/depends_accurate.o 
> > tools/ccanlint/tests/depends_build.o 
> > tools/ccanlint/tests/depends_build_without_features.o 
> > tools/ccanlint/tests/depends_exist.o 
> > tools/ccanlint/tests/examples_compile.o 
> > tools/ccanlint/tests/examples_exist.o 
> > tools/ccanlint/tests/examples_relevant.o 
> > tools/ccanlint/tests/examples_run.o tools/ccanlint/tests/hash_if.o 
> > tools/ccanlint/tests/headers_idempotent.o 
> > tools/ccanlint/tests/info_compiles.o 
> > tools/ccanlint/tests/info_documentation_exists.o 
> > tools/ccanlint/tests/info_exists.o tools/ccanlint/tests/info_ported.o 
> > tools/ccanlint/tests/info_summary_single_line.o tools/cca
 nlin
> >  t/tests/license_comment.o tools/ccanlint/tests/license_depends_compat.o 
> > tools/ccanlint/tests/license_exists.o 
> > tools/ccanlint/tests/license_file_compat.o 
> > tools/ccanlint/tests/main_header_compiles.o 
> > tools/ccanlint/tests/main_header_exists.o 
> > tools/ccanlint/tests/module_builds.o tools/ccanlint/tests/module_links.o 
> > tools/ccanlint/tests/no_trailing_whitespace.o 
> > tools/ccanlint/tests/objects_build.o 
> > tools/ccanlint/tests/objects_build_with_stringchecks.o 
> > tools/ccanlint/tests/objects_build_without_features.o 
> > tools/ccanlint/tests/reduce_features.o tools/ccanlint/tests/tests_compile.o 
> > tools/ccanlint/tests/tests_compile_coverage.o 
> > tools/ccanlint/tests/tests_coverage.o tools/ccanlint/tests/tests_exist.o 
> > tools/ccanlint/tests/tests_helpers_compile.o 
> > tools/ccanlint/tests/tests_pass.o 
> > tools/ccanlint/tests/tests_pass_valgrind.o 
> > tools/ccanlint/tests/tests_pass_without_features.o ccan/autodata/autodata.o 
> > ccan/dgraph/dgraph.o ccan/ilog/ilog.o ccan/lbalance/lbalance.o 
> > ccan/ptr_valid/ptr_valid.o ccan/s
 trma
> >  p/strmap.o tools/ccan_dir.o tools/compi
> >     le.o tools/depends.o tools/doc_extract-core.o tools/gcov.o 
> > tools/manifest.o tools/read_config_header.o tools/tools.o 
> > ccan/asort/asort.o ccan/err/err.o ccan/foreach/foreach.o ccan/hash/hash.o 
> > ccan/htable/htable.o ccan/list/list.o ccan/membuf/membuf.o 
> > ccan/noerr/noerr.o ccan/opt/helpers.o ccan/opt/opt.o ccan/opt/parse.o 
> > ccan/opt/usage.o ccan/rbuf/rbuf.o ccan/read_write_all/read_write_all.o 
> > ccan/str/debug.o ccan/str/str.o ccan/take/take.o ccan/tal/tal.o 
> > ccan/tal/grab_file/grab_file.o ccan/tal/link/link.o ccan/tal/path/path.o 
> > ccan/tal/str/str.o ccan/time/time.o -lm -o tools/ccanlint/ccanlint
> >     /usr/bin/ld: 
> > tools/ccanlint/async.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  multiple definition of `license_compatible'; 
> > /tmp/cc72h7qq.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  first defined here
> >     /usr/bin/ld: 
> > tools/ccanlint/file_analysis.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  multiple definition of `license_compatible'; 
> > /tmp/cc72h7qq.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  first defined here
> >     /usr/bin/ld: 
> > tools/ccanlint/licenses.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/licenses.h:33:
> >  multiple definition of `license_compatible'; 
> > /tmp/cc72h7qq.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  first defined here
> >     /usr/bin/ld: 
> > tools/ccanlint/tests/avoids_cpp_reserved.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/./tools/ccanlint/../ccanlint/licenses.h:33:
> >  multiple definition of `license_compatible'; 
> > /tmp/cc72h7qq.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  first defined
> >     here
> >     /usr/bin/ld: 
> > tools/ccanlint/tests/depends_accurate.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/./tools/ccanlint/../ccanlint/licenses.h:33:
> >  multiple definition of `license_compatible'; 
> > /tmp/cc72h7qq.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  first defined here
> >     /usr/bin/ld: 
> > tools/ccanlint/tests/depends_build.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/./tools/ccanlint/../ccanlint/licenses.h:33:
> >  multiple definition of `license_compatible'; 
> > /tmp/cc72h7qq.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  first defined here
> >     /usr/bin/ld: 
> > tools/ccanlint/tests/depends_build_without_features.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/./tools/ccanlint/../ccanlint/licenses.h:33:
> >  multiple definition of `license_compatible'; 
> > /tmp/cc72h7qq.o:/home/kirr/src/wendelin/wendelin.core/3rdparty/ccan/tools/ccanlint/../ccanlint/licenses.h:33:
> >  first defined here
> >     ...
> > 
> > The errors are valid becuase symbols are declared without extern in .h
> > files and those .h files are included from multiple translation units.
> > 
> > -> Fix it. I'm not sure why it used to compile ok before.
> > 
> > Signed-off-by: Kirill Smelkov <k...@nexedi.com>
> 
> Applied, thanks.

Thanks, David.

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