[cfe-dev] Clang for ARM

[Anton Smirnov]

Hey, guys.

I'm using androideabi linker as i'm compiling for android (ARM Linux).

thanks for verbose flag tip, i've tried and output is pretty largeso dive
in it if you have time and wish:

/home/asmirnov/arm-toolchain-clang33/bin/arm-linux-androideabi-clang++
-target arm-linux-androideabi -mcpu=cortex-a9
-I/home/asmirnov/android-ndk-r9/platforms/android-8/arch-arm/include
-I/home/asmirnov/android-ndk-r9/platforms/android-8/arch-arm/usr/include
-mfloat-abi=soft -ccc-gcc-name arm-linux-androideabi -fPIC
-fvisibility-inlines-hidden -Wall -W -Wno-unused-parameter -Wwrite-strings
-Wmissing-field-initializers -pedantic -Wno-long-long
-Wcovered-switch-default -Wnon-virtual-dtor -fno-common
-Woverloaded-virtual -Wcast-qual -fno-strict-aliasing
-Wno-nested-anon-types -fno-rtti  -ldl
CMakeFiles/c-index-test.dir/c-index-test.c.o  -o
../../../../bin/c-index-test
-L/home/asmirnov/arm-toolchain-clang33/lib/gcc/arm-linux-androideabi/4.6
-L/home/asmirnov/arm-toolchain-clang33/arm-linux-androideabi/lib
-L/home/asmirnov/arm-toolchain-clang33/sysroot/usr/lib
../../../../lib/libLLVMMC.a ../../../../lib/libLLVMObject.a
../../../../lib/libLLVMSupport.a -ldl -lz ../../../../lib/libclang.so.3.3
../../../../lib/libclangARCMigrate.a ../../../../lib/libclangFormat.a
../../../../lib/libclangTooling.a ../../../../lib/libclangRewriteFrontend.a
../../../../lib/libclangRewriteCore.a ../../../../lib/libclangFrontend.a
../../../../lib/libclangDriver.a ../../../../lib/libclangSerialization.a
../../../../lib/libLLVMBitReader.a ../../../../lib/libclangParse.a
../../../../lib/libclangSema.a ../../../../lib/libLLVMARMCodeGen.a
../../../../lib/libLLVMARMAsmParser.a
../../../../lib/libLLVMARMDisassembler.a ../../../../lib/libLLVMAsmParser.a
../../../../lib/libLLVMAsmPrinter.a ../../../../lib/libLLVMSelectionDAG.a
../../../../lib/libLLVMARMDesc.a ../../../../lib/libLLVMMCParser.a
../../../../lib/libLLVMCodeGen.a ../../../../lib/libLLVMARMAsmPrinter.a
../../../../lib/libLLVMARMInfo.a ../../../../lib/libLLVMObjCARCOpts.a
../../../../lib/libLLVMScalarOpts.a ../../../../lib/libLLVMInstCombine.a
../../../../lib/libLLVMTransformUtils.a ../../../../lib/libLLVMipa.a
../../../../lib/libLLVMAnalysis.a ../../../../lib/libLLVMTarget.a
../../../../lib/libLLVMCore.a ../../../../lib/libclangEdit.a
../../../../lib/libclangAnalysis.a ../../../../lib/libclangASTMatchers.a
../../../../lib/libclangAST.a ../../../../lib/libclangLex.a
../../../../lib/libclangBasic.a ../../../../lib/libLLVMMC.a
../../../../lib/libLLVMObject.a ../../../../lib/libLLVMSupport.a -ldl -lz
-ldl -lc -ldl -Wl,-rpath,/home/asmirnov/llvm_arm_build/lib
/home/asmirnov/arm-toolchain-clang33/bin/arm-linux-androideabi-ld:
../../../../lib/libclang.so.3.3: error: undefined reference to 'dladdr'
clang33: error: linker command failed with exit code 1 (use -v to see
invocation)

I will keep trying to solve it but your help is appreciated too.
thank you.

PS. Actually my current cmake command-line is:

CC="arm-linux-androideabi-clang" CXX="arm-linux-androideabi-clang++"
PATH=/home/asmirnov/arm-toolchain-clang33:${PATH} cmake ../llvm
-DCMAKE_CROSSCOMPILING=True
-DCMAKE_INSTALL_PREFIX=/home/asmirnov/llvm_arm_installed
-DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-androideabi -DLLVM_TARGET_ARCH=ARM
-DLLVM_TARGETS_TO_BUILD=ARM
-DLLVM_TABLEGEN=/home/asmirnov/llvm_host_build/Release+Asserts/bin/llvm-tblgen
-DCLANG_TABLEGEN=/home/asmirnov/llvm_host_build/Release+Asserts/bin/clang-tblgen
-DCMAKE_CXX_FLAGS='-target arm-linux-androideabi -mcpu=cortex-a9
-I/home/asmirnov/android-ndk-r9/platforms/android-8/arch-arm/include
-I/home/asmirnov/android-ndk-r9/platforms/android-8/arch-arm/usr/include
-mfloat-abi=soft -ccc-gcc-name arm-linux-androideabi'

I'm using standalone toolchain from android ndk (clang 3.3)



2013/10/3 Tim Northover <t.p.northover at gmail.com>

> It sounds like Android might put libdl in an odd place, though I've
> never tried to build for it. You might have to tell CMake about this
> location before it will work.
>
> Anton: running "make VERBOSE=1" will show the actual command-line
> that's failing. That could shed some light on what's going on (e.g.
> whether -ldl is completely missing or just in the wrong place).
>
> > Did you try the solution in that question?
>
> Even I wouldn't know how to do that. This is LLVM's own build system.
> Set CMAKE_CXX_FLAGS? Set CMAKE_EXE_LINKER_FLAGS?
>
> Cheers.
>
> Tim.
>
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