Make it optional to link statically to libgcc and libstdc++ (#474)

Author: BewareMyPower

lib/CMakeLists.txt

@@ -76,6 +76,7 @@ target_include_directories(PULSAR_OBJECT_LIB PUBLIC
     "${CMAKE_SOURCE_DIR}/include"
     "${CMAKE_BINARY_DIR}/include")
 
+option(LINK_STATIC_GCC_CXX "Link statically to libgcc and libstdc++" OFF)
 include(CheckCXXSymbolExists)
 if (BUILD_DYNAMIC_LIB)
     add_library(pulsarShared SHARED $<TARGET_OBJECTS:PULSAR_OBJECT_LIB>)
@@ -94,7 +95,7 @@ if (BUILD_DYNAMIC_LIB)
         target_link_options(pulsarShared PRIVATE -Wl,-Bsymbolic)
     endif ()
     check_cxx_symbol_exists(__GLIBCXX__ iostream GLIBCXX)
-    if (GLIBCXX)
+    if (GLIBCXX AND LINK_STATIC_GCC_CXX)
         target_link_libraries(pulsarShared PUBLIC -static-libgcc -static-libstdc++)
     endif ()
 endif()

pkg/deb/build-deb.sh

@@ -41,7 +41,7 @@ pushd $CPP_DIR
 export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
 
 chmod +x $(find . -name "*.sh")
-cmake . -DBUILD_TESTS=OFF -DBUILD_PERF_TOOLS=OFF -DLINK_STATIC=ON
+cmake . -DBUILD_TESTS=OFF -DBUILD_PERF_TOOLS=OFF -DLINK_STATIC=ON -DLINK_STATIC_GCC_CXX=ON
 make -j 3
 popd
 

pkg/rpm/SPECS/pulsar-client.spec

@@ -55,6 +55,7 @@ static library.
 %build
 git clone https://github.com/microsoft/vcpkg.git
 cmake -B build -DINTEGRATE_VCPKG=ON -DCMAKE_BUILD_TYPE=Release \
+    -DLINK_STATIC_GCC_CXX=ON \
     -DBUILD_TESTS=OFF -DBUILD_DYNAMIC_LIB=ON -DBUILD_STATIC_LIB=ON
 cmake --build build -j8
 ./build-support/merge_archives_vcpkg.sh $PWD/build