Build of p3scan with clang_glibc toolchain

# [tuscan]
# Server = file:///var/cache/pacman/pkg/

# :: Synchronizing package databases...
# downloading tuscan.db...

# /toolchain_root/sysroot --> /sysroot/sysroot
# /toolchain_root/lib --> /sysroot/lib
# /toolchain_root/sbin --> /sysroot/sbin
# /toolchain_root/lib64 --> /sysroot/lib64
# /toolchain_root/etc --> /sysroot/etc
# /toolchain_root/share --> /sysroot/share
# /toolchain_root/bin --> /sysroot/bin
# /toolchain_root/var --> /sysroot/var
# /toolchain_root/usr --> /sysroot/usr
# /toolchain_root/glibc-build --> /sysroot/glibc-build
# /toolchain_root/x86_64-pc-linux-gnu --> /sysroot/x86_64-pc-linux-gnu
# /toolchain_root/include --> /sysroot/include
# /toolchain_root/libexec --> /sysroot/libexec

# ==> Making package: p3scan 2.3.2-11 (Thu Apr 13 17:11:34 UTC 2017)
# ==> Checking runtime dependencies...
# ==> Checking buildtime dependencies...
# ==> WARNING: Using existing $srcdir/ tree
# ==> Starting build()...
# gcc -Wall -DLOGOPT="LOG_PID|LOG_CONS" -DLOGFAC="LOG_DAEMON" -c getlinep3.c
# gcc -Wall -DLOGOPT="LOG_PID|LOG_CONS" -DLOGFAC="LOG_DAEMON" -c getline_ssl.c
# getline_ssl.c:78:8: warning: assigning to 'SSL_METHOD *' (aka 'struct ssl_method_st *') from 'const SSL_METHOD *' (aka 'const struct ssl_method_st *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
# meth=SSLv23_method();
# ^~~~~~~~~~~~~~~~
# 1 warning generated.
# gcc -Wall -DLOGOPT="LOG_PID|LOG_CONS" -DLOGFAC="LOG_DAEMON" -c parsefile.c
# parsefile.c:146:6: warning: unused typedef 'replacelist' [-Wunused-local-typedef]
# } replacelist;
# ^
# 1 warning generated.
# gcc -Wall -DLOGOPT="LOG_PID|LOG_CONS" -DLOGFAC="LOG_DAEMON" -c p3scan.c
# p3scan.c:1201:15: warning: array index 512 is past the end of the array (which contains 512 elements) [-Warray-bounds]
# else virdef[512]='\0';
# ^ ~~~
# p3scan.c:1164:4: note: array 'virdef' declared here
# static char line[512], virdef[512];
# ^
# p3scan.c:1643:81: warning: incompatible pointer types passing 'size_t *' (aka 'unsigned long *') to parameter of type 'socklen_t *' (aka 'unsigned int *') [-Wincompatible-pointer-types]
# if (getsockopt(p->client_fd, SOL_IP, SO_ORIGINAL_DST, &p->server_addr, &p->socksize)){
# ^~~~~~~~~~~~
# /usr/include/sys/socket.h:221:32: note: passing argument to parameter '__optlen' here
# socklen_t *__restrict __optlen) __THROW;
# ^
# p3scan.c:2153:75: warning: comparison of unsigned expression < 0 is always false [-Wtautological-compare]
# if ((len=send_mailfile(p->mailfile, p->server_fd, p))<0){
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
# p3scan.c:2159:75: warning: comparison of unsigned expression < 0 is always false [-Wtautological-compare]
# if ((len=send_mailfile(p->mailfile, p->client_fd, p))<0){
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
# p3scan.c:2401:83: error: function definition is not allowed here
# void switchoption(char opt, char * arg, char * optstr, char * where, int state){
# ^
# p3scan.c:2716:60: error: function definition is not allowed here
# void parseargs(int c, char **v, char * where, int state){
# ^
# p3scan.c:2775:4: warning: implicit declaration of function 'parseargs' is invalid in C99 [-Wimplicit-function-declaration]
# parseargs(argc, argv, "\t[cmdlineparm]", CONFIG_STATE_CMDPRE);
# ^
# p3scan.c:3014:61: warning: incompatible pointer types passing 'size_t *' (aka 'unsigned long *') to parameter of type 'socklen_t *' (aka 'unsigned int *') [-Wincompatible-pointer-types]
# while ((connfd = accept(sockfd, (struct sockaddr *)&addr,&socksize)) >= 0){
# ^~~~~~~~~
# /usr/include/sys/socket.h:244:28: note: passing argument to parameter '__addr_len' here
# socklen_t *__restrict __addr_len);
# ^
# 6 warnings and 2 errors generated.
# make: *** [Makefile:83: p3scan.o] Error 1
# ==> ERROR: A failure occurred in build().
# Aborting...