>>> paho-mqtt-c 1.3.2 Extracting
gzip -d -c /home/buildroot/autobuild/instance-2/dl/paho-mqtt-c/paho-mqtt-c-1.3.2.tar.gz | tar --strip-components=1 -C /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2   -xf -
>>> paho-mqtt-c 1.3.2 Patching

Applying 0001-src-CMakeLists.txt-fix-build-on-uclibc-or-musl.patch using patch: 
patching file src/CMakeLists.txt

Applying 0002-Revert-Enable-CXX-language-to-support-using-Generate.patch using patch: 
patching file CMakeLists.txt
>>> paho-mqtt-c 1.3.2 Configuring
(mkdir -p /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/ && cd /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/ && rm -f CMakeCache.txt && PATH="/home/buildroot/autobuild/instance-2/output-1/host/bin:/home/buildroot/autobuild/instance-2/output-1/host/sbin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games"  /home/buildroot/autobuild/instance-2/output-1/host/bin/cmake /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/ -DCMAKE_TOOLCHAIN_FILE="/home/buildroot/autobuild/instance-2/output-1/host/share/buildroot/toolchainfile.cmake" -DCMAKE_INSTALL_PREFIX="/usr" -DCMAKE_COLOR_MAKEFILE=OFF -DBUILD_DOC=OFF -DBUILD_DOCS=OFF -DBUILD_EXAMPLE=OFF -DBUILD_EXAMPLES=OFF -DBUILD_TEST=OFF -DBUILD_TESTS=OFF -DBUILD_TESTING=OFF -DBUILD_SHARED_LIBS=ON  -DPAHO_ENABLE_TESTING=FALSE -DPAHO_ENABLE_CPACK=FALSE -DPAHO_WITH_SSL=TRUE )
-- The C compiler identification is GNU 8.4.0
-- Check for working C compiler: /home/buildroot/autobuild/instance-2/output-1/host/bin/riscv64-buildroot-linux-musl-gcc
-- Check for working C compiler: /home/buildroot/autobuild/instance-2/output-1/host/bin/riscv64-buildroot-linux-musl-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- CMake version: 3.15.5
-- CMake system name: Linux
-- Timestamp is 2020-05-10T04:56:01Z
-- Found OpenSSL: /home/buildroot/autobuild/instance-2/output-1/host/riscv64-buildroot-linux-musl/sysroot/usr/lib/libcrypto.so (found version "1.1.1g")  
-- Configuring done
-- Generating done
CMake Warning:
  Manually-specified variables were not used by the project:

    BUILD_DOC
    BUILD_DOCS
    BUILD_EXAMPLE
    BUILD_EXAMPLES
    BUILD_TEST
    BUILD_TESTING
    BUILD_TESTS


-- Build files have been written to: /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2
>>> paho-mqtt-c 1.3.2 Building
PATH="/home/buildroot/autobuild/instance-2/output-1/host/bin:/home/buildroot/autobuild/instance-2/output-1/host/sbin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games"  /usr/bin/make -j4  -C /home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/
make[1]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
make[2]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
make[3]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
make[3]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
Scanning dependencies of target common_ssl_obj
make[3]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
Scanning dependencies of target common_obj
make[3]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
make[3]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
make[3]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
[  3%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTProtocolClient.c.o
[  3%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTTime.c.o
[  5%] Building C object src/CMakeFiles/common_ssl_obj.dir/Clients.c.o
[  6%] Building C object src/CMakeFiles/common_obj.dir/MQTTTime.c.o
[  8%] Building C object src/CMakeFiles/common_obj.dir/MQTTProtocolClient.c.o
[ 10%] Building C object src/CMakeFiles/common_ssl_obj.dir/utf-8.c.o
[ 12%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTPacket.c.o
[ 13%] Building C object src/CMakeFiles/common_obj.dir/Clients.c.o
[ 15%] Building C object src/CMakeFiles/common_obj.dir/utf-8.c.o
[ 17%] Building C object src/CMakeFiles/common_obj.dir/MQTTPacket.c.o
[ 18%] Building C object src/CMakeFiles/common_obj.dir/MQTTPacketOut.c.o
[ 20%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTPacketOut.c.o
[ 22%] Building C object src/CMakeFiles/common_ssl_obj.dir/Messages.c.o
[ 24%] Building C object src/CMakeFiles/common_ssl_obj.dir/Tree.c.o
[ 25%] Building C object src/CMakeFiles/common_obj.dir/Messages.c.o
[ 27%] Building C object src/CMakeFiles/common_ssl_obj.dir/Socket.c.o
[ 29%] Building C object src/CMakeFiles/common_obj.dir/Tree.c.o
[ 31%] Building C object src/CMakeFiles/common_ssl_obj.dir/Log.c.o
[ 32%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTPersistence.c.o
[ 34%] Building C object src/CMakeFiles/common_obj.dir/Socket.c.o
[ 36%] Building C object src/CMakeFiles/common_ssl_obj.dir/Thread.c.o
[ 37%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTProtocolOut.c.o
[ 39%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTPersistenceDefault.c.o
[ 41%] Building C object src/CMakeFiles/common_obj.dir/Log.c.o
[ 43%] Building C object src/CMakeFiles/common_ssl_obj.dir/SocketBuffer.c.o
[ 44%] Building C object src/CMakeFiles/common_obj.dir/MQTTPersistence.c.o
[ 46%] Building C object src/CMakeFiles/common_ssl_obj.dir/LinkedList.c.o
[ 48%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTProperties.c.o
[ 50%] Building C object src/CMakeFiles/common_obj.dir/Thread.c.o
[ 51%] Building C object src/CMakeFiles/common_ssl_obj.dir/MQTTReasonCodes.c.o
/home/buildroot/autobuild/instance-2/output-1/host/riscv64-buildroot-linux-musl/sysroot/usr/include/sched.h:84:17: error: expected declaration specifiers or '...' before string constant
 void free(void *);
                 ^
/home/buildroot/autobuild/instance-2/output-1/host/riscv64-buildroot-linux-musl/sysroot/usr/include/sched.h:84:17: error: expected declaration specifiers or '...' before numeric constant
 void free(void *);
                 ^
src/CMakeFiles/common_ssl_obj.dir/build.make:283: recipe for target 'src/CMakeFiles/common_ssl_obj.dir/MQTTReasonCodes.c.o' failed
make[3]: *** [src/CMakeFiles/common_ssl_obj.dir/MQTTReasonCodes.c.o] Error 1
make[3]: *** Waiting for unfinished jobs....
[ 53%] Building C object src/CMakeFiles/common_obj.dir/MQTTProtocolOut.c.o
[ 55%] Building C object src/CMakeFiles/common_obj.dir/MQTTPersistenceDefault.c.o
[ 56%] Building C object src/CMakeFiles/common_obj.dir/SocketBuffer.c.o
[ 58%] Building C object src/CMakeFiles/common_obj.dir/LinkedList.c.o
make[3]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
CMakeFiles/Makefile2:136: recipe for target 'src/CMakeFiles/common_ssl_obj.dir/all' failed
make[2]: *** [src/CMakeFiles/common_ssl_obj.dir/all] Error 2
make[2]: *** Waiting for unfinished jobs....
[ 60%] Building C object src/CMakeFiles/common_obj.dir/MQTTProperties.c.o
[ 62%] Building C object src/CMakeFiles/common_obj.dir/MQTTReasonCodes.c.o
[ 65%] Building C object src/CMakeFiles/common_obj.dir/SHA1.c.o
[ 65%] Building C object src/CMakeFiles/common_obj.dir/Base64.c.o
/home/buildroot/autobuild/instance-2/output-1/host/riscv64-buildroot-linux-musl/sysroot/usr/include/sched.h:84:17: error: expected declaration specifiers or '...' before string constant
 void free(void *);
                 ^
/home/buildroot/autobuild/instance-2/output-1/host/riscv64-buildroot-linux-musl/sysroot/usr/include/sched.h:84:17: error: expected declaration specifiers or '...' before numeric constant
 void free(void *);
                 ^
src/CMakeFiles/common_obj.dir/build.make:283: recipe for target 'src/CMakeFiles/common_obj.dir/MQTTReasonCodes.c.o' failed
make[3]: *** [src/CMakeFiles/common_obj.dir/MQTTReasonCodes.c.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
CMakeFiles/Makefile2:356: recipe for target 'src/CMakeFiles/common_obj.dir/all' failed
make[2]: *** [src/CMakeFiles/common_obj.dir/all] Error 2
make[2]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
Makefile:151: recipe for target 'all' failed
make[1]: *** [all] Error 2
make[1]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2'
package/pkg-generic.mk:266: recipe for target '/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/.stamp_built' failed
make: *** [/home/buildroot/autobuild/instance-2/output-1/build/paho-mqtt-c-1.3.2/.stamp_built] Error 2
make: Leaving directory '/home/buildroot/autobuild/instance-2/buildroot'