[llvm-dev] Unable to build static binary

[Danie Grobbelaar via llvm-dev]

I'm currently having issues trying to rebuild one of my projects with an
updated version of LLVM. This project generates a statically linked binary.

My previous build used llvm-10.0.0 and I could build the binary without any
issues. When I checked out HEAD a few weeks ago (commit 82fbc5d) and tried
a build, it failed with the following linking error:

/usr/bin/c++  -fPIC -fvisibility-inlines-hidden -Werror=date-time -Wall
-Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual
-Wno-missing-field-initializers -pedantic -Wno-long-long
-Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-class-memaccess
-Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type
-Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment
-fdiagnostics-color -ffunction-sections -fdata-sections -fno-common
-Woverloaded-virtual -fno-strict-aliasing -O3 -O3 -DNDEBUG  -static
-Wl,-rpath-link,/home/danie/nett-testing/tmp/llvm-project/build/./lib
-Wl,-O3 -Wl,--gc-sections *<source files>* -o *<binary name>*
-Wl,-rpath,"\$ORIGIN/../lib"  lib/libLLVMSupport.a  -lpthread
-static-libgcc  -static-libstdc++  lib/libclangTooling.a
lib/libclangBasic.a  lib/libclangASTMatchers.a  lib/libclangFormat.a
lib/libclangToolingInclusions.a  lib/libclangFrontend.a
lib/libclangDriver.a  lib/libclangParse.a  lib/libclangSerialization.a
lib/libclangSema.a  lib/libclangEdit.a  lib/libclangAnalysis.a
lib/libclangASTMatchers.a  lib/libclangAST.a  lib/libclangToolingCore.a
lib/libclangRewrite.a  lib/libclangLex.a  lib/libclangBasic.a
lib/libLLVMOption.a  lib/libLLVMFrontendOpenMP.a
lib/libLLVMTransformUtils.a  lib/libLLVMAnalysis.a
lib/libLLVMProfileData.a  lib/libLLVMObject.a  lib/libLLVMBitReader.a
lib/libLLVMCore.a  lib/libLLVMRemarks.a  lib/libLLVMBitstreamReader.a
lib/libLLVMMCParser.a  lib/libLLVMMC.a  lib/libLLVMDebugInfoCodeView.a
lib/libLLVMTextAPI.a  lib/libLLVMBinaryFormat.a  lib/libLLVMSupport.a
-lrt  -ldl  -lpthread  -lm  /usr/lib/x86_64-linux-gnu/libz.so
/usr/lib/x86_64-linux-gnu/libtinfo.so  lib/libLLVMDemangle.a && :
/usr/bin/ld: attempted static link of dynamic object
`/usr/lib/x86_64-linux-gnu/libz.so'

I haven't changed my CMakeLists.txt file, and I'm lost as to how to fix
this issue. Any help would be appreciated. For reference, my CMakeLists.txt
file as as follows:

--- BEGIN CMakeLists.txt ---
set(LLVM_LINK_COMPONENTS support)

add_clang_executable(mybinary
    <source files>
    )

set (GCC_COMPILE_FLAGS "-O3")
set (GCC_LINK_FLAGS "-static")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GCC_COMPILER_FLAGS}")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GCC_LINK_FLAGS}")

target_link_libraries(mybinary
    PRIVATE
    -static-libgcc
    -static-libstdc++
    clangTooling
    clangBasic
    clangASTMatchers
    )
--- END CMakeLists.txt ---

Kind regards and thank you in advance,
Danie Grobbelaar
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20210508/032a66d6/attachment.html>