We want to use shared libprotobuf.so for many tools to not increase size of
each binary.
We know we can build protobuf with -Dprotobuf_BUILD_SHARED_LIBS=ON
-Dprotobuf_INSTALL_SUPPORTED_FROM_MODULE=ON -Dprotobuf_ABSL_PROVIDER=module
but then both protobuf and absl are build as shared library.
We need to deliver over 80 libraries. It would easier if we could only
deliver single libprotobuf.so file like in the past when protobuf was not
using absl.
Is it possible to use static absl libraies and link it libprotobuf.so ?
I tried firts build abls independentlay with
cmake -S ${ABSL_SOURCE} -B ${ABSL_PROD_DIR}
-DCMAKE_PREFIX_PATH=${ABSL_PROD_DIR}
-DCMAKE_INSTALL_PREFIX=${ABSL_PROD_DIR} -DABSL_ENABLE_INSTALL=ON
-DABSL_USE_EXTERNAL_GOOGLETEST=OFF -DABSL_FIND_GOOGLETEST=OFF
This created static absl libraries.
And then build protobuf with
-DCMAKE_PREFIX_PATH=${ABSL_PROD_DIR}/lib64/cmake/absl
-Dprotobuf_ABSL_PROVIDER=package-DCMAKE_CXX_STANDARD=14
-Dprotobuf_BUILD_SHARED_LIBS=ON
But it fails with
[ 36%] Linking CXX shared library libprotobuf.so
/usr/bin/ld:
/user/adembek/PROD/absl/build/absl_2023_01_25/lib64/libabsl_cord.a(cord.cc.o):
relocation R_X86_64_32 against `.rodata' can not be used when making a
shared object; recompile with -fPIC
/usr/bin/ld:
/user/adembek/PROD/absl/build/absl_2023_01_25/lib64/libabsl_cord.a(cord_analysis.cc.o):
relocation R_X86_64_32 against `.rodata' can not be used when making a
shared object; recompile with -fPIC
/usr/bin/ld:
/user/adembek/PROD/absl/build/absl_2023_01_25/lib64/libabsl_die_if_null.a(die_if_null.cc.o):
relocation R_X86_64_32 against `.rodata' can not be used when making a
shared object; recompile with -fPIC
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