Qestion: does gllvm include the .a in the .bc file?

[TimHe95]

• ubuntu 18.04
• go 1.15.15
• llvm 10.0.0
• gllvm install by go get ...
• mysql 8.0.22

Steps:

mkdir mysql-8.0.22-source/build && cd  mysql-8.0.22-source/build
cmake .. -DWITH_BOOST=../../boost_1_73_0 -DCMAKE_C_COMPILER=/usr/bin/gclang -DCMAKE_CXX_COMPILER=/usr/bin/gclang++ -DCMAKE_C_LINK_FLAGS=-rdynamic -DCMAKE_CXX_LINK_FLAGS=-rdynamic -DCMAKE_MODULE_LINKER_FLAGS=-rdynamic -DCMAKE_SHARED_LINKER_FLAGS=-rdynamic
make
get-bc bin/mysqld

I want to get mysqld.bc. When looking into the compile commands (-DCMAKE_VERBOSE_MAKEFILE=ON), it links many static libraries to generate the mysqld binary where many .a files are included (e.g. libinnobase.a). These libraries are also generated from code of mysql.

The linking command of mysqld:

gclang++ -std=c++14 -fno-omit-frame-pointer -ftls-model=initial-exec  -Wall -Wextra -Wformat-security -Wvla -Wundef -Wmissing-format-attribute -Woverloaded-virtual -Wcast-qual -Wno-null-conversion -Wno-unused-private-field -Wconditional-uninitialized -Wdeprecated -Wextra-semi -Wheader-hygiene -Wnon-virtual-dtor -Wundefined-reinterpret-cast -Winconsistent-missing-destructor-override -Winconsistent-missing-override -Wshadow-field -DDBUG_OFF -ffunction-sections -fdata-sections -O2 -g -DNDEBUG -rdynamic -fuse-ld=gold -Wl,--gc-sections -Wl,--export-dynamic -rdynamic ../runtime_output_directory/mysqld.o  -o ../runtime_output_directory/mysqld_hhc -Wl,-rpath,/home/timhe/Downloads/mysql-server-mysql-8.0.22/build/library_output_directory: -lpthread libsql_main.a libsql_gis.a libbinlog.a librpl.a libmaster.a libslave.a libsql_dd.a ../archive_output_directory/libmysys.a ../components/libminchassis/libminchassis.a ../libbinlogevents/lib/libbinlogevents.a ../extra/icu/source/i18n/libicui18n.a ../extra/icu/source/common/libicuuc.a ../extra/icu/source/stubdata/libicustubdata.a ../storage/innobase/libinnobase.a libsql_main.a libsql_gis.a libbinlog.a librpl.a libmaster.a libslave.a libsql_dd.a ../storage/innobase/libinnobase.a libsql_main.a libsql_gis.a libbinlog.a librpl.a libmaster.a libslave.a libsql_dd.a ../storage/innobase/libinnobase.a ../storage/archive/libarchive.a ../storage/blackhole/libblackhole.a ../storage/csv/libcsv.a ../storage/federated/libfederated.a ../storage/heap/libheap.a ../storage/heap/libheap_library.a ../storage/myisam/libmyisam.a ../storage/myisam/libmyisam_library.a ../storage/myisammrg/libmyisammrg.a ../storage/perfschema/libperfschema.a ../storage/temptable/libtemptable.a ../plugin/fulltext/libngram_parser.a ../plugin/x/libmysqlx.a ../extra/icu/source/i18n/libicui18n.a ../extra/icu/source/common/libicuuc.a ../extra/icu/source/stubdata/libicustubdata.a ../extra/libevent/libevent-2.1.11-stable/lib/libevent_extra.a ../extra/libevent/libevent-2.1.11-stable/lib/libevent_openssl.a ../extra/libevent/libevent-2.1.11-stable/lib/libevent_core.a ../extra/libevent/libevent-2.1.11-stable/lib/libevent_pthreads.a ../plugin/x/protocol/protobuf/libmysqlxmessages_lite.a ../library_output_directory/libprotobuf-lite.so.3.11.4 server_component/libmysql_server_component_services.a ../archive_output_directory/libvio.a -lcrypt ../libbinlogevents/lib/libbinlogevents.a ../archive_output_directory/libmysys.a ../archive_output_directory/libstrings.a ../archive_output_directory/libmysys.a ../archive_output_directory/libstrings.a ../archive_output_directory/libmytime.a -lm -lrt /usr/lib/x86_64-linux-gnu/libssl.so /usr/lib/x86_64-linux-gnu/libcrypto.so -ldl ../archive_output_directory/libzstd.a ../archive_output_directory/libz.a ../liblz4_lib.a -laio -lpthread

Question

So would gllvm also include functions, variables, and other things in those .a files?
Thanks!

[ianamason]

When you extract the bc ask for a manifest too, and take a look. It should include all the bitcode that
is in the executables bitcode path section.