The target system is: Buildroot - 1 - i586 The host system is: Linux - 4.9.0-9-amd64 - x86_64 Compiling the C compiler identification source file "CMakeCCompilerId.c" succeeded. Compiler: /home/buildroot/autobuild/instance-2/output-1/host/bin/i586-linux-gcc Build flags: -D_LARGEFILE_SOURCE;-D_LARGEFILE64_SOURCE;-D_FILE_OFFSET_BITS=64;-Os Id flags: The output was: 0 Compilation of the C compiler identification source "CMakeCCompilerId.c" produced "a.out" The C compiler identification is GNU, found in "/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/3.15.5/CompilerIdC/a.out" Determining if the C compiler works passed with the following output: Change Dir: /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_70463/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_70463.dir/build.make CMakeFiles/cmTC_70463.dir/build make[2]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_70463.dir/testCCompiler.c.o /home/buildroot/autobuild/instance-2/output-1/host/bin/i586-linux-gcc --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DNDEBUG -o CMakeFiles/cmTC_70463.dir/testCCompiler.c.o -c /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp/testCCompiler.c Linking C executable cmTC_70463 /home/buildroot/autobuild/instance-2/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_70463.dir/link.txt --verbose=1 /home/buildroot/autobuild/instance-2/output-1/host/bin/i586-linux-gcc --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DNDEBUG CMakeFiles/cmTC_70463.dir/testCCompiler.c.o -o cmTC_70463 make[2]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp' make[1]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp' Detecting C compiler ABI info compiled with the following output: Change Dir: /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_5f24f/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_5f24f.dir/build.make CMakeFiles/cmTC_5f24f.dir/build make[2]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_5f24f.dir/CMakeCCompilerABI.c.o /home/buildroot/autobuild/instance-2/output-1/host/bin/i586-linux-gcc --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DNDEBUG -v -o CMakeFiles/cmTC_5f24f.dir/CMakeCCompilerABI.c.o -c /home/buildroot/autobuild/instance-2/output-1/host/share/cmake-3.15/Modules/CMakeCCompilerABI.c Using built-in specs. 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GNU C17 (Buildroot 2020.02) version 8.3.0 (i586-buildroot-linux-musl) compiled by GNU C version 4.9.2, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version none GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 5f52e7ecc405bc6f3663726823e10a51 COLLECT_GCC_OPTIONS='-march=pentium-mmx' '-D' '_LARGEFILE_SOURCE' '-D' '_LARGEFILE64_SOURCE' '-D' '_FILE_OFFSET_BITS=64' '-Os' '-D' 'NDEBUG' '-v' '-o' 'CMakeFiles/cmTC_5f24f.dir/CMakeCCompilerABI.c.o' '-c' /home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/i586-buildroot-linux-musl/8.3.0/../../../../i586-buildroot-linux-musl/bin/as -v --32 -o CMakeFiles/cmTC_5f24f.dir/CMakeCCompilerABI.c.o /tmp/cc2pxJB9.s GNU assembler version 2.31.1 (i586-buildroot-linux-musl) using BFD version (GNU Binutils) 2.31.1 COMPILER_PATH=/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../libexec/gcc/i586-buildroot-linux-musl/8.3.0/:/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../libexec/gcc/:/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/i586-buildroot-linux-musl/8.3.0/../../../../i586-buildroot-linux-musl/bin/ LIBRARY_PATH=/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/i586-buildroot-linux-musl/8.3.0/:/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/:/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/i586-buildroot-linux-musl/8.3.0/../../../../i586-buildroot-linux-musl/lib/:/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot/lib/:/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot/usr/lib/ COLLECT_GCC_OPTIONS='-march=pentium-mmx' '-D' '_LARGEFILE_SOURCE' '-D' '_LARGEFILE64_SOURCE' '-D' '_FILE_OFFSET_BITS=64' '-Os' '-D' 'NDEBUG' '-v' '-o' 'CMakeFiles/cmTC_5f24f.dir/CMakeCCompilerABI.c.o' '-c' Linking C executable cmTC_5f24f /home/buildroot/autobuild/instance-2/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_5f24f.dir/link.txt --verbose=1 /home/buildroot/autobuild/instance-2/output-1/host/bin/i586-linux-gcc --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DNDEBUG -v CMakeFiles/cmTC_5f24f.dir/CMakeCCompilerABI.c.o -o cmTC_5f24f Using built-in specs. 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[/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/i586-buildroot-linux-musl/include] collapse include dir [/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/i586-buildroot-linux-musl/8.3.0/include] ==> [/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/lib/gcc/i586-buildroot-linux-musl/8.3.0/include] collapse include dir [/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot/usr/include] ==> [/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot/usr/include] implicit include dirs: [/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/i586-buildroot-linux-musl/include;/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/lib/gcc/i586-buildroot-linux-musl/8.3.0/include;/home/buildroot/autobuild/instance-2/output-1/host/i586-buildroot-linux-musl/sysroot/usr/include] Parsed C implicit link information from above output: link 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