/********************************************************************************** *    checking for event2/thread.h... no libevent_pthreads required, failing * 说明： *     编译libwebsock，遇到这个问题，差点资料，解决一下，毕竟用起来简单。 * *                                           2017-3-17 深圳 南山平山村 曾剑锋 *********************************************************************************/一、参考文档：    1. magent编译报错error: event.h: No such file or directory        http://blog.csdn.net/vio4677/article/details/48492927        二、编译错误输出：    zengjf@zengjf:~/zengjf/zengjfos/libwebsock$ ./configure     checking for a BSD-compatible install... /usr/bin/install -c    checking whether build environment is sane... yes    checking for a thread-safe mkdir -p... /bin/mkdir -p    checking for gawk... no    checking for mawk... mawk    checking whether make sets $(MAKE)... yes    checking whether make supports nested variables... yes    checking for gcc... gcc    checking whether the C compiler works... yes    checking for C compiler default output file name... a.out    checking for suffix of executables...     checking whether we are cross compiling... no    checking for suffix of object files... o    checking whether we are using the GNU C compiler... yes    checking whether gcc accepts -g... yes    checking for gcc option to accept ISO C89... none needed    checking whether gcc understands -c and -o together... yes    checking for style of include used by make... GNU    checking dependency style of gcc... gcc3    checking build system type... x86_64-unknown-linux-gnu    checking host system type... x86_64-unknown-linux-gnu    checking how to print strings... printf    checking for a sed that does not truncate output... /bin/sed    checking for grep that handles long lines and -e... /bin/grep    checking for egrep... /bin/grep -E    checking for fgrep... /bin/grep -F    checking for ld used by gcc... /usr/bin/ld    checking if the linker (/usr/bin/ld) is GNU ld... yes    checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B    checking the name lister (/usr/bin/nm -B) interface... BSD nm    checking whether ln -s works... yes    checking the maximum length of command line arguments... 1572864    checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop    checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop    checking for /usr/bin/ld option to reload object files... -r    checking for objdump... objdump    checking how to recognize dependent libraries... pass_all    checking for dlltool... no    checking how to associate runtime and link libraries... printf %s\n    checking for ar... ar    checking for archiver @FILE support... @    checking for strip... strip    checking for ranlib... ranlib    checking command to parse /usr/bin/nm -B output from gcc object... ok    checking for sysroot... no    checking for a working dd... /bin/dd    checking how to truncate binary pipes... /bin/dd bs=4096 count=1    checking for mt... mt    checking if mt is a manifest tool... no    checking how to run the C preprocessor... gcc -E    checking for ANSI C header files... yes    checking for sys/types.h... yes    checking for sys/stat.h... yes    checking for stdlib.h... yes    checking for string.h... yes    checking for memory.h... yes    checking for strings.h... yes    checking for inttypes.h... yes    checking for stdint.h... yes    checking for unistd.h... yes    checking for dlfcn.h... yes    checking for objdir... .libs    checking if gcc supports -fno-rtti -fno-exceptions... no    checking for gcc option to produce PIC... -fPIC -DPIC    checking if gcc PIC flag -fPIC -DPIC works... yes    checking if gcc static flag -static works... yes    checking if gcc supports -c -o file.o... yes    checking if gcc supports -c -o file.o... (cached) yes    checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes    checking whether -lc should be explicitly linked in... no    checking dynamic linker characteristics... GNU/Linux ld.so    checking how to hardcode library paths into programs... immediate    checking whether stripping libraries is possible... yes    checking if libtool supports shared libraries... yes    checking whether to build shared libraries... yes    checking whether to build static libraries... no    checking netdb.h usability... yes    checking netdb.h presence... yes    checking for netdb.h... yes    checking for stdlib.h... (cached) yes    checking for string.h... (cached) yes    checking sys/socket.h usability... yes    checking sys/socket.h presence... yes    checking for sys/socket.h... yes    checking for unistd.h... (cached) yes    checking for size_t... yes    checking for stdlib.h... (cached) yes    checking for GNU libc compatible malloc... yes    checking for stdlib.h... (cached) yes    checking for GNU libc compatible realloc... yes    checking for memset... yes    checking for socket... yes    checking for strstr... yes    checking event2/thread.h usability... no    checking event2/thread.h presence... no    checking for event2/thread.h... no    libevent_pthreads required, failing    zengjf@zengjf:~/zengjf/zengjfos/libwebsock$ 三、错误原因：    1. 通过在根目录查找thread.h，未找到，说明是因为安装了libevent但是没有安装头文件导致的    2. 重新下载libevent，然后编译安装就OK了    3. http://libevent.org/下载libevent-2.0.22-stable.tar.gz    4. ./configure && make && make install