On Tue, Mar 13, 2018 at 8:56 AM, Suse Shi via iovisor-dev
<iovisor-dev@...> wrote:

env. EL7
kernel 4.14.23-1.el7uek.x86_64
http://yum.oracle.com/repo/OracleLinux/OL7/developer_UEKR5/x86_64/index.html

with llvm
llvm-toolset-7-libomp-4.0.1-1.el7.x86_64
llvm-toolset-7-llvm-libs-4.0.1-3.el7.x86_64
llvm-toolset-7-clang-libs-4.0.1-1.el7.x86_64
llvm-toolset-7-llvm-4.0.1-3.el7.x86_64
llvm-toolset-7-llvm-devel-4.0.1-3.el7.x86_64
llvm-toolset-7-clang-4.0.1-1.el7.x86_64
llvm-toolset-7-compiler-rt-4.0.1-1.el7.x86_64
llvm-toolset-7-llvm-static-4.0.1-3.el7.x86_64
llvm-toolset-7-clang-devel-4.0.1-1.el7.x86_64
llvm-toolset-7-runtime-4.0.1-2.el7.x86_64


err msg:
$make
[ 3%] Built target bpf-shared
[ 9%] Built target clang_frontend
[ 11%] Built target bpf-static
[ 14%] Built target api-static
[ 17%] Built target usdt-static
[ 27%] Built target b_frontend
[ 41%] Built target bcc-shared
[ 48%] Built target bcc-loader-static
[ 61%] Built target bcc-lua-static
[ 70%] Built target bcc-static
[ 71%] Built target bcc_py
[ 74%] Built target bcc-lua
[ 76%] Built target bps
[ 78%] Built target FollyRequestContextSwitch
[ 79%] Built target CPUDistribution
[ 81%] Built target LLCStat
[ 83%] Built target HelloWorld
[ 85%] Built target RecordMySQLQuery
[ 86%] Built target TCPSendStack
[ 88%] Built target RandomRead
[ 89%] Linking CXX executable test_libbcc
CMakeFiles/test_libbcc.dir/test_usdt_probes.cc.o: In function
`____C_A_T_C_H____T_E_S_T____37()':
test_usdt_probes.cc:(.text+0x7ffc): undefined reference to
`__dtrace_libbcc_test___sample_probe_1(unsigned long, unsigned long)'
collect2: error: ld returned 1 exit status
make[2]: *** [tests/cc/CMakeFiles/test_libbcc.dir/build.make:394:
tests/cc/test_libbcc] Error 1
make[1]: *** [CMakeFiles/Makefile2:1398:
tests/cc/CMakeFiles/test_libbcc.dir/all] Error 2
make: *** [Makefile:139: all] Error 2

This should be related to your /usr/include/sys/sdt.h
That file probably introduced this additional symbol
__dtrace_libbcc_test___sample_probe_1.
Maybe you can check whether additional macro definition needed to avoid this.

====================
any help is welcome, thanks.

--
Regards,
-suse

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