Llvm-as: <stdin>:1:1: error: expected top-level entity

LLVM Project
1

Hi,

I am trying to build libclc through buildroot . llvm-14.0.6/clang-14.0.6 etc packages are built successfully prior to libclc build itself. libclc fails with below error.
{{
libclc-d1cbc92e2ceee59963f5c3a576382e5bba31f060.tar.gz: OK (sha256: 5ea2cd2fa7fa1474d3e0580064e7a22014ef8d64dbbd7c546277fa4beb5acf86)

libclc d1cbc92e2ceee59963f5c3a576382e5bba31f060 Extracting
gzip -d -c /root/build/build/buildroot-source/dl/libclc/libclc-d1cbc92e2ceee59963f5c3a576382e5bba31f060.tar.gz | /bin/tar --strip-components=1 -C /root/build/build/buildroot-build/build/libclc-d1cbc92e2ceee59963f5c3a576382e5bba31f060 -xf -
libclc d1cbc92e2ceee59963f5c3a576382e5bba31f060 Patching
libclc d1cbc92e2ceee59963f5c3a576382e5bba31f060 Configuring
…
LLVM-CC nvptx–nvidiacl/lib/atomic/atomic_and.cl.bc
LLVM-CC nvptx–nvidiacl/lib/atomic/atomic_cmpxchg.cl.bc
/bin/llvm-as: :1:1: error: expected top-level entity
typedef unsigned char uchar;
^
make[1]: *** [Makefile:75: nvptx–nvidiacl/lib/subnormal_helper_func.ll.bc] Error 1
make[1]: *** Waiting for unfinished jobs…
}}
Please provide input for further analysis.

Regards
Koti

2

The “typedef” line looks like C code. “llvm-as” is a bitcode assembler, it expects the textual form of LLVM IR (.ll), and creates the binary representation of it (.bc).

3

Hi,

libclc is not customized from my end, still the error mentioned in previous comment is observed? llvm-as path is passed and please check below path configuration before triggering libclc build.
{{

libclc d1cbc92e2ceee59963f5c3a576382e5bba31f060 Configuring
(cd /root/build/build/buildroot-build/build/libclc-d1cbc92e2ceee59963f5c3a576382e5bba31f060; PATH=“//bin://sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin” AR=“//bin/x86_64-linux-gnu-ar” AS=“//bin/x86_64-linux-gnu-as” LD=“//bin/x86_64-linux-gnu-ld” NM=“//bin/x86_64-linux-gnu-nm” CC=“//bin/x86_64-linux-gnu-gcc” GCC=“//bin/x86_64-linux-gnu-gcc” CPP=“//bin/x86_64-linux-gnu-cpp” CXX=“//bin/x86_64-linux-gnu-g++” FC=“//bin/x86_64-linux-gnu-gfortran” F77=“//bin/x86_64-linux-gnu-gfortran” RANLIB=“//bin/x86_64-linux-gnu-ranlib” READELF=“//bin/x86_64-linux-gnu-readelf” STRIP=“//bin/x86_64-linux-gnu-strip” OBJCOPY=“//bin/x86_64-linux-gnu-objcopy” OBJDUMP=“//bin/x86_64-linux-gnu-objdump” AR_FOR_BUILD=“/usr/bin/ar” AS_FOR_BUILD=“/usr/bin/as” CC_FOR_BUILD=“//bin/ccache /usr/bin/gcc” GCC_FOR_BUILD=“//bin/ccache /usr/bin/gcc” CXX_FOR_BUILD=“//bin/ccache /usr/bin/g++” LD_FOR_BUILD=“/usr/bin/ld” CPPFLAGS_FOR_BUILD=“-I//include” CFLAGS_FOR_BUILD=“-O2 -I//include” CXXFLAGS_FOR_BUILD=“-O2 -I//include” LDFLAGS_FOR_BUILD=“-L//lib -Wl,-rpath,//lib” FCFLAGS_FOR_BUILD=“” DEFAULT_ASSEMBLER=“//bin/x86_64-linux-gnu-as” DEFAULT_LINKER=“//bin/x86_64-linux-gnu-ld” CPPFLAGS=“-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64” CFLAGS=“-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -D_FORTIFY_SOURCE=1” CXXFLAGS=“-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -D_FORTIFY_SOURCE=1” LDFLAGS=“” FCFLAGS=" -Os -g2" FFLAGS=" -Os -g2" PKG_CONFIG=“//bin/pkg-config” STAGING_DIR=“//x86_64-linux-gnu/sysroot” INTLTOOL_PERL=/usr/bin/perl ./configure.py -with-llvm-config=//usr/bin/llvm-config -prefix=/usr -includedir=/usr/share -pkgconfigdir=/usr/lib/pkgconfig -with-cxx-compiler=/usr/bin/g++)
}}
To get rid of the error, what’s the fix patch i need to apply? can you please let me know?

4

Hi,
⚙ D99794 libclc: Add -cl-no-stdinc to clang flags on clang >=13 is not useful as i am using llvm-14.0.6 version and the patch proposed in above link is already exists.

Regards