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rdnetto / YCM-Generator

Generates config files for YouCompleteMe (https://github.com/Valloric/YouCompleteMe)
GNU General Public License v3.0
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ld in fake-toolchain must work properly #126

Open catror opened 5 years ago

catror commented 5 years ago

I am trying to use YCM-Generator for leveldb. And my cmake version is 3.12.4, my clang version is 7.0, my operating system is ubuntu 16.04.

When I executed config_gen.py, some cmake errors occurred. So I checked the error log and found that cmake tried to link an executable by executing the following command:

"${path_to_fake-toolchain}/Unix/ld" -z relro --hash-style=gnu --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o cmTC_fe463 /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crt1.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/crtbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0 -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu -L/lib/x86_64-linux-gnu -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../.. -L/usr/local/bin/../lib -L/lib -L/usr/lib CMakeFiles/cmTC_fe463.dir/CMakeCXXCompilerABI.cpp.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-linux-gnu/5.4.0/crtend.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crtn.o

Then, I tried to modify ld in fake-toolchain to make it work properly on my operating system.

#!/bin/sh
/usr/bin/ld $@

After that, I executed config_gen.py again and it works fine.

rdnetto commented 5 years ago

When we invoke config_gen.py for Cmake, there are two stages:

We currently stub out ld completely to simply exit 0 because a real linker would fail, since the object files wouldn't exist given the compiler is stubbed out. Are you sure that your build is invoking the clang from the fake-toolchain, and not the real one?

catror commented 5 years ago

Yes, I am sure. The errors occurred in the first stage. I tested the first stage manually, all the commands I executed:

mkdir /tmp/leveldb
cd /tmp/leveldb/
git clone https://github.com/google/leveldb.git
export PATH=~/.vim/plugged/YCM-Generator/fake-toolchain/Unix/:$PATH
export CC=clang
export CXX=clang++
export YCM_CONFIG_GEN_CC_PASSTHROUGH=/usr/local/bin/clang
export YCM_CONFIG_GEN_CXX_PASSTHROUGH=/usr/local/bin/clang++
/usr/local/bin/cmake /tmp/leveldb/leveldb/

output of cmake:

-- The C compiler identification is Clang 7.0.0 -- The CXX compiler identification is Clang 7.0.0 -- Check for working C compiler: /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -- Check for working C compiler: /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - failed -- Detecting C compile features -- Detecting C compile features - failed -- Check for working CXX compiler: /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ -- Check for working CXX compiler: /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - failed -- Detecting CXX compile features -- Detecting CXX compile features - failed -- Check if the system is big endian -- Searching 16 bit integer -- Looking for sys/types.h -- Looking for sys/types.h - found -- Looking for stdint.h -- Looking for stdint.h - found -- Looking for stddef.h -- Looking for stddef.h - found -- Check size of unsigned short CMake Error at /usr/local/share/cmake-3.12/Modules/CheckTypeSize.cmake:116 (try_compile): Cannot copy output executable

''

to destination specified by COPY_FILE:

'/tmp/leveldb/CMakeFiles/CheckTypeSize/CMAKE_SIZEOF_UNSIGNED_SHORT.bin'

Unable to find the executable at any of:

/tmp/leveldb/CMakeFiles/CMakeTmp/cmTC_88665
/tmp/leveldb/CMakeFiles/CMakeTmp/Debug/cmTC_88665
/tmp/leveldb/CMakeFiles/CMakeTmp/Development/cmTC_88665

Call Stack (most recent call first): /usr/local/share/cmake-3.12/Modules/CheckTypeSize.cmake:241 (__check_type_size_impl) /usr/local/share/cmake-3.12/Modules/TestBigEndian.cmake:32 (CHECK_TYPE_SIZE) CMakeLists.txt:23 (test_big_endian)

-- Check size of unsigned int CMake Error at /usr/local/share/cmake-3.12/Modules/CheckTypeSize.cmake:116 (try_compile): Cannot copy output executable

''

to destination specified by COPY_FILE:

'/tmp/leveldb/CMakeFiles/CheckTypeSize/CMAKE_SIZEOF_UNSIGNED_INT.bin'

Unable to find the executable at any of:

/tmp/leveldb/CMakeFiles/CMakeTmp/cmTC_d4fc0
/tmp/leveldb/CMakeFiles/CMakeTmp/Debug/cmTC_d4fc0
/tmp/leveldb/CMakeFiles/CMakeTmp/Development/cmTC_d4fc0

Call Stack (most recent call first): /usr/local/share/cmake-3.12/Modules/CheckTypeSize.cmake:241 (__check_type_size_impl) /usr/local/share/cmake-3.12/Modules/TestBigEndian.cmake:37 (CHECK_TYPE_SIZE) CMakeLists.txt:23 (test_big_endian)

-- Check size of unsigned long CMake Error at /usr/local/share/cmake-3.12/Modules/CheckTypeSize.cmake:116 (try_compile): Cannot copy output executable

''

to destination specified by COPY_FILE:

'/tmp/leveldb/CMakeFiles/CheckTypeSize/CMAKE_SIZEOF_UNSIGNED_LONG.bin'

Unable to find the executable at any of:

/tmp/leveldb/CMakeFiles/CMakeTmp/cmTC_63119
/tmp/leveldb/CMakeFiles/CMakeTmp/Debug/cmTC_63119
/tmp/leveldb/CMakeFiles/CMakeTmp/Development/cmTC_63119

Call Stack (most recent call first): /usr/local/share/cmake-3.12/Modules/CheckTypeSize.cmake:241 (__check_type_size_impl) /usr/local/share/cmake-3.12/Modules/TestBigEndian.cmake:44 (CHECK_TYPE_SIZE) CMakeLists.txt:23 (test_big_endian)

CMake Error at /usr/local/share/cmake-3.12/Modules/TestBigEndian.cmake:49 (message): no suitable type found Call Stack (most recent call first): CMakeLists.txt:23 (test_big_endian)

-- Configuring incomplete, errors occurred! See also "/tmp/leveldb/CMakeFiles/CMakeOutput.log". See also "/tmp/leveldb/CMakeFiles/CMakeError.log".

CMakeOutput.log

The system is: Linux - 4.15.0-39-generic - x86_64 Compiling the C compiler identification source file "CMakeCCompilerId.c" succeeded. Compiler: /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang Build flags: Id flags:

The output was: 0

Compiling the C compiler identification source file "CMakeCCompilerId.c" succeeded. Compiler: /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang Build flags: Id flags: -c

The output was: 0

Compilation of the C compiler identification source "CMakeCCompilerId.c" produced "CMakeCCompilerId.o"

The C compiler identification is Clang, found in "/tmp/leveldb/CMakeFiles/3.12.4/CompilerIdC/CMakeCCompilerId.o"

Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" succeeded. Compiler: /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ Build flags: Id flags:

The output was: 0

Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" succeeded. Compiler: /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ Build flags: Id flags: -c

The output was: 0

Compilation of the CXX compiler identification source "CMakeCXXCompilerId.cpp" produced "CMakeCXXCompilerId.o"

The CXX compiler identification is Clang, found in "/tmp/leveldb/CMakeFiles/3.12.4/CompilerIdCXX/CMakeCXXCompilerId.o"

Determining if the C compiler works passed with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_142fe/fast" /usr/bin/make -f CMakeFiles/cmTC_142fe.dir/build.make CMakeFiles/cmTC_142fe.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_142fe.dir/testCCompiler.c.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -o CMakeFiles/cmTC_142fe.dir/testCCompiler.c.o -c /tmp/leveldb/CMakeFiles/CMakeTmp/testCCompiler.c Linking C executable cmTC_142fe /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_142fe.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang CMakeFiles/cmTC_142fe.dir/testCCompiler.c.o -o cmTC_142fe make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

Determining if the CXX compiler works passed with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_2476e/fast" /usr/bin/make -f CMakeFiles/cmTC_2476e.dir/build.make CMakeFiles/cmTC_2476e.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_2476e.dir/testCXXCompiler.cxx.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ -o CMakeFiles/cmTC_2476e.dir/testCXXCompiler.cxx.o -c /tmp/leveldb/CMakeFiles/CMakeTmp/testCXXCompiler.cxx Linking CXX executable cmTC_2476e /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_2476e.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ CMakeFiles/cmTC_2476e.dir/testCXXCompiler.cxx.o -o cmTC_2476e make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

Determining if the include file sys/types.h exists passed with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_694f9/fast" /usr/bin/make -f CMakeFiles/cmTC_694f9.dir/build.make CMakeFiles/cmTC_694f9.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_694f9.dir/CheckIncludeFile.c.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -std=c11 -o CMakeFiles/cmTC_694f9.dir/CheckIncludeFile.c.o -c /tmp/leveldb/CMakeFiles/CMakeTmp/CheckIncludeFile.c Linking C executable cmTC_694f9 /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_694f9.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang CMakeFiles/cmTC_694f9.dir/CheckIncludeFile.c.o -o cmTC_694f9 make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

Determining if the include file stdint.h exists passed with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_595fd/fast" /usr/bin/make -f CMakeFiles/cmTC_595fd.dir/build.make CMakeFiles/cmTC_595fd.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_595fd.dir/CheckIncludeFile.c.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -std=c11 -o CMakeFiles/cmTC_595fd.dir/CheckIncludeFile.c.o -c /tmp/leveldb/CMakeFiles/CMakeTmp/CheckIncludeFile.c Linking C executable cmTC_595fd /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_595fd.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang CMakeFiles/cmTC_595fd.dir/CheckIncludeFile.c.o -o cmTC_595fd make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

Determining if the include file stddef.h exists passed with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_e3bc2/fast" /usr/bin/make -f CMakeFiles/cmTC_e3bc2.dir/build.make CMakeFiles/cmTC_e3bc2.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_e3bc2.dir/CheckIncludeFile.c.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -std=c11 -o CMakeFiles/cmTC_e3bc2.dir/CheckIncludeFile.c.o -c /tmp/leveldb/CMakeFiles/CMakeTmp/CheckIncludeFile.c Linking C executable cmTC_e3bc2 /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_e3bc2.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang CMakeFiles/cmTC_e3bc2.dir/CheckIncludeFile.c.o -o cmTC_e3bc2 make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

CMakeError.log

Compilation of the C compiler identification source "CMakeCCompilerId.c" did not produce an executable in "/tmp/leveldb/CMakeFiles/3.12.4/CompilerIdC".

Compilation of the CXX compiler identification source "CMakeCXXCompilerId.cpp" did not produce an executable in "/tmp/leveldb/CMakeFiles/3.12.4/CompilerIdCXX".

Detecting C compiler ABI info failed to compile with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_79a4f/fast" /usr/bin/make -f CMakeFiles/cmTC_79a4f.dir/build.make CMakeFiles/cmTC_79a4f.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_79a4f.dir/CMakeCCompilerABI.c.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -o CMakeFiles/cmTC_79a4f.dir/CMakeCCompilerABI.c.o -c /usr/local/share/cmake-3.12/Modules/CMakeCCompilerABI.c Linking C executable cmTC_79a4f /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_79a4f.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -v CMakeFiles/cmTC_79a4f.dir/CMakeCCompilerABI.c.o -o cmTC_79a4f clang version 7.0.0 (tags/RELEASE_700/final) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /usr/local/bin Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.4.0 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6.0.0 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.4.0 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.0.0 Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.4.0 Candidate multilib: .;@m64 Selected multilib: .;@m64 "/home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/ld" -z relro --hash-style=gnu --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o cmTC_79a4f /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crt1.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/crtbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0 -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu -L/lib/x86_64-linux-gnu -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../.. -L/usr/local/bin/../lib -L/lib -L/usr/lib CMakeFiles/cmTC_79a4f.dir/CMakeCCompilerABI.c.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/x86_64-linux-gnu/5.4.0/crtend.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crtn.o make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

Cannot copy output executable '' to destination specified by COPY_FILE: '/tmp/leveldb/CMakeFiles/3.12.4/CMakeDetermineCompilerABI_C.bin' Unable to find the executable at any of: /tmp/leveldb/CMakeFiles/CMakeTmp/cmTC_79a4f /tmp/leveldb/CMakeFiles/CMakeTmp/Debug/cmTC_79a4f /tmp/leveldb/CMakeFiles/CMakeTmp/Development/cmTC_79a4f

Detecting C [-std=c11] compiler features failed to compile with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_eb9e9/fast" /usr/bin/make -f CMakeFiles/cmTC_eb9e9.dir/build.make CMakeFiles/cmTC_eb9e9.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_eb9e9.dir/feature_tests.c.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang -std=c11 -o CMakeFiles/cmTC_eb9e9.dir/feature_tests.c.o -c /tmp/leveldb/CMakeFiles/feature_tests.c Linking C executable cmTC_eb9e9 /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_eb9e9.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang CMakeFiles/cmTC_eb9e9.dir/feature_tests.c.o -o cmTC_eb9e9 make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

Cannot copy output executable '' to destination specified by COPY_FILE: '/tmp/leveldb/CMakeFiles/feature_tests.bin' Unable to find the executable at any of: /tmp/leveldb/CMakeFiles/CMakeTmp/cmTC_eb9e9 /tmp/leveldb/CMakeFiles/CMakeTmp/Debug/cmTC_eb9e9 /tmp/leveldb/CMakeFiles/CMakeTmp/Development/cmTC_eb9e9

Detecting CXX compiler ABI info failed to compile with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_c2c8d/fast" /usr/bin/make -f CMakeFiles/cmTC_c2c8d.dir/build.make CMakeFiles/cmTC_c2c8d.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_c2c8d.dir/CMakeCXXCompilerABI.cpp.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ -o CMakeFiles/cmTC_c2c8d.dir/CMakeCXXCompilerABI.cpp.o -c /usr/local/share/cmake-3.12/Modules/CMakeCXXCompilerABI.cpp Linking CXX executable cmTC_c2c8d /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_c2c8d.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ -v CMakeFiles/cmTC_c2c8d.dir/CMakeCXXCompilerABI.cpp.o -o cmTC_c2c8d clang version 7.0.0 (tags/RELEASE_700/final) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /usr/local/bin Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.4.0 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6.0.0 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.4.0 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.0.0 Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.4.0 Candidate multilib: .;@m64 Selected multilib: .;@m64 "/home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/ld" -z relro --hash-style=gnu --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o cmTC_c2c8d /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crt1.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/crtbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0 -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu -L/lib/x86_64-linux-gnu -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../.. -L/usr/local/bin/../lib -L/lib -L/usr/lib CMakeFiles/cmTC_c2c8d.dir/CMakeCXXCompilerABI.cpp.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-linux-gnu/5.4.0/crtend.o /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crtn.o make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

Cannot copy output executable '' to destination specified by COPY_FILE: '/tmp/leveldb/CMakeFiles/3.12.4/CMakeDetermineCompilerABI_CXX.bin' Unable to find the executable at any of: /tmp/leveldb/CMakeFiles/CMakeTmp/cmTC_c2c8d /tmp/leveldb/CMakeFiles/CMakeTmp/Debug/cmTC_c2c8d /tmp/leveldb/CMakeFiles/CMakeTmp/Development/cmTC_c2c8d

Detecting CXX [-std=c++2a] compiler features failed to compile with the following output: Change Dir: /tmp/leveldb/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_94f2a/fast" /usr/bin/make -f CMakeFiles/cmTC_94f2a.dir/build.make CMakeFiles/cmTC_94f2a.dir/build make[1]: Entering directory '/tmp/leveldb/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_94f2a.dir/feature_tests.cxx.o /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ -std=c++2a -o CMakeFiles/cmTC_94f2a.dir/feature_tests.cxx.o -c /tmp/leveldb/CMakeFiles/feature_tests.cxx Linking CXX executable cmTC_94f2a /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_94f2a.dir/link.txt --verbose=1 /home/catror/.vim/plugged/YCM-Generator/fake-toolchain/Unix/clang++ CMakeFiles/cmTC_94f2a.dir/feature_tests.cxx.o -o cmTC_94f2a make[1]: Leaving directory '/tmp/leveldb/CMakeFiles/CMakeTmp'

Cannot copy output executable '' to destination specified by COPY_FILE: '/tmp/leveldb/CMakeFiles/feature_tests.bin' Unable to find the executable at any of: /tmp/leveldb/CMakeFiles/CMakeTmp/cmTC_94f2a /tmp/leveldb/CMakeFiles/CMakeTmp/Debug/cmTC_94f2a /tmp/leveldb/CMakeFiles/CMakeTmp/Development/cmTC_94f2a