Compile error in CentOS 7.4.1708
[root@localhost build]# cat /etc/redhat-release 
CentOS Linux release 7.4.1708 (Core) 

[root@localhost build]# uname -a
Linux localhost.localdomain 3.10.0-693.el7.x86_64 #1 SMP Tue Aug 22 21:09:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

[root@localhost build]# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.5/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC) 


-----------------------Error -----------------------------------

/usr/local/src/proxy/xmrig-proxy/build/xmrig-proxy/src/api/Httpd.cpp: In member function âbool Httpd::start()â:
/usr/local/src/proxy/xmrig-proxy/build/xmrig-proxy/src/api/Httpd.cpp:49:34: error: âMHD_FEATURE_EPOLLâ was not declared in this scope
     if (MHD_is_feature_supported(MHD_FEATURE_EPOLL)) {
                                  ^
/usr/local/src/proxy/xmrig-proxy/build/xmrig-proxy/src/api/Httpd.cpp:49:51: error: âMHD_is_feature_supportedâ was not declared in this scope
     if (MHD_is_feature_supported(MHD_FEATURE_EPOLL)) {
                                                   ^
make[2]: *** [CMakeFiles/xmrig-proxy.dir/src/api/Httpd.cpp.o] Error 1
make[1]: *** [CMakeFiles/xmrig-proxy.dir/all] Error 2
make: *** [all] Error 2


