How to install golang 1.11 in CentOS5

go_installation.sh

# details in: https://golang.org/doc/install/source
# a patch for centos 5 build: https://github.com/golang/go/issues/24980#issuecomment-384193598

export GOROOT="/usr/local/go"
export PATH="$GOROOT/bin:$PATH"
mkdir /usr/local/go ~/go
curl -L https://dl.google.com/go/go1.4-bootstrap-20171003.tar.gz | tar xf - -C /usr/local/go
cd /usr/local/go/src
./make.bash
curl -L https://dl.google.com/go/go1.11.src.tar.gz | tar xf - -C ~/go
cd ~/go/src
patch -p2 <<EOF
diff --git a/src/runtime/sys_linux_amd64.s b/src/runtime/sys_linux_amd64.s
index a5db5cba23..8e945add07 100644
--- a/src/runtime/sys_linux_amd64.s
+++ b/src/runtime/sys_linux_amd64.s
@@ -41,6 +41,7 @@
 #define SYS_sched_getaffinity  204
 #define SYS_epoll_create       213
 #define SYS_exit_group         231
+#define SYS_epoll_wait         232
 #define SYS_epoll_ctl          233
 #define SYS_openat             257
 #define SYS_faccessat          269
@@ -664,8 +665,7 @@ TEXT runtime·epollwait(SB),NOSPLIT,$0
        MOVQ    ev+8(FP), SI
        MOVL    nev+16(FP), DX
        MOVL    timeout+20(FP), R10
-       MOVQ    $0, R8
-       MOVL    $SYS_epoll_pwait, AX
+       MOVL    $SYS_epoll_wait, AX
        SYSCALL
        MOVL    AX, ret+24(FP)
        RET
EOF
./make.bash
../bin/go version