./configure --prefix=/usr/local/php5 --with-apxs2=/usr/local/apache2.2/bin/apxs -with-config-file-path=/etc/apache2 --with-mysql=/var/lib/mys ql5 --enable-discard-path --enable-safe-mode --with-openssl --enable-bcmath --with-bz2 --with-pic --enable-calendar --enable-ctype --with-gd bm --with-db4 --enable-dbase --enable-dba --enable-ftp --with-gd=/usr/local --enable-gd-native-ttf --with-jpeg-dir=/usr --with-png-dir=/usr - -with-freetype-dir=/usr --with-gmp --with-mysql=external,/var/lib/mysql5 --with-xml --enable-trans-sid --enable-shmop --enable-sockets --with -regex=php --enable-sysvsem --enable-sysvshm --enable-sysvmsg --enable-yp --enable-memory-limit --with-tsrm-pthreads --enable-shared --disabl e-debug --with-zlib --with-mhash --with-gettext --with-xsl --with-iconv --enable-inline-optimization --disable-static --with-curl --enable-ex if --enable-magic-quotes --with-readline --with-ncurses --with-inifile --with-flatfile --enable-dio --with-mbstring --with-mime-magic=/etc/ap ache2/magic --enable-soap --enable-wddx --with-pear --enable-pic --disable-rpath --enable-track-vars --enable-dbx --enable-mcal --enable-mbst ring --enable-mbstr-enc-trans --enable-mbregex --enable-memory-limit --enable-zend-multibyte --without-mysqli --enable-force-cgi-redirect --e nable-fastcgi --enable-pcntl --enable-sigchild --disable-ipv6 --with-pgsql=shared,/usr --with-mysql-sock=/tmp/mysql5.sock --with-imap-ssl=/et c/ssl Here's the output: loading cache ./config.cache checking for Cygwin environment... (cached) no checking for mingw32 environment... (cached) no checking for egrep... (cached) grep -E checking for a sed that does not truncate output... (cached) /usr/bin/sed checking host system type... i686-pc-linux-gnu checking target system type... i686-pc-linux-gnu checking for gcc... (cached) gcc checking whether the C compiler (gcc ) works... yes checking whether the C compiler (gcc ) is a cross-compiler... no checking whether we are using GNU C... (cached) yes checking whether gcc accepts -g... (cached) yes checking whether gcc and cc understand -c and -o together... (cached) yes checking how to run the C preprocessor... (cached) gcc -E checking for AIX... no checking whether ln -s works... (cached) yes checking if compiler supports -R... (cached) no checking if compiler supports -Wl,-rpath,... (cached) yes checking for re2c... no configure: warning: You will need re2c 0.9.11 or later if you want to regenerate PHP parsers. checking for gawk... (cached) gawk checking for bison... (cached) bison -y checking for bison version... (cached) 1.35 (ok) checking for flex... (cached) flex checking for yywrap in -lfl... (cached) yes checking lex output file root... (cached) lex.yy checking whether yytext is a pointer... (cached) yes checking for working const... (cached) yes checking for flex version... (cached) 2.5.4 (ok) checking whether to force non-PIC code in shared modules... no checking for pthreads_cflags... (cached) -pthread checking for pthreads_lib... (cached) Configuring SAPI modules checking for AOLserver support... no checking for Apache 1.x module support via DSO through APXS... no checking for Apache 1.x module support... no checking for mod_charset compatibility option... no checking for Apache 2.0 filter-module support via DSO through APXS... no checking for Apache 2.0 handler-module support via DSO through APXS... yes checking for Apache 1.x (hooks) module support via DSO through APXS... no checking for Apache 1.x (hooks) module support... no checking for mod_charset compatibility option... no checking for Caudium support... no checking for CLI build... yes checking for Continuity support... no checking for embedded SAPI library support... no checking for Zeus ISAPI support... no checking for Milter support... no checking for NSAPI support... no checking for PHTTPD support... no checking for Pi3Web support... no checking for Roxen/Pike support... no checking for thttpd... no checking for TUX... no checking for webjames... no checking for chosen SAPI module... apache2handler Running FastCGI checks checking for gethostbyname in -lnsl... (cached) yes checking for socket in -lsocket... (cached) no checking for pthread.h... (cached) yes checking for the pthreads library -lpthreads... no checking whether pthreads work without any flags... no checking whether pthreads work with -Kthread... no checking whether pthreads work with -kthread... no checking for the pthreads library -llthread... no checking whether pthreads work with -pthread... yes checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE checking if more special flags are required for pthreads... no checking for cc_r... (cached) gcc checking for sun_len in sys/un.h... no checking for fpos_t in stdio.h... yes checking for sys/socket.h... (cached) yes checking for netdb.h... (cached) yes checking for netinet/in.h... (cached) yes checking for arpa/inet.h... (cached) yes checking for sys/time.h... (cached) yes checking for limits.h... (cached) yes checking for sys/param.h... (cached) yes checking for unistd.h... (cached) yes checking for a fileno() prototype in stdio.h... yes checking whether cross-process locking is required by accept()... no checking whether va_arg(arg, long double) crashes the compiler... no checking for working const... (cached) yes checking for strerror... (cached) yes Running system checks checking for sendmail... (cached) /usr/bin/sendmail checking whether system uses EBCDIC... (cached) no checking whether byte ordering is bigendian... (cached) no checking for socket... yes checking for socketpair... yes checking for htonl... yes checking for gethostname... yes checking for gethostbyaddr... yes checking for yp_get_default_domain... yes checking for dlopen... no checking for __dlopen... no checking for dlopen in -ldl... yes checking for sin in -lm... (cached) yes checking for res_search... no checking for __res_search... no checking for res_search in -lresolv... yes checking for inet_aton... yes checking for dn_skipname... no checking for __dn_skipname... yes checking for ANSI C header files... (cached) yes checking for dirent.h that defines DIR... (cached) yes checking for opendir in -ldir... (cached) no checking for inttypes.h... (cached) yes checking for stdint.h... (cached) yes checking for dirent.h... (cached) yes checking for ApplicationServices/ApplicationServices.h... (cached) no checking for sys/param.h... (cached) yes checking for sys/types.h... (cached) yes checking for sys/time.h... (cached) yes checking for netinet/in.h... (cached) yes checking for alloca.h... (cached) yes checking for arpa/inet.h... (cached) yes checking for arpa/nameser.h... (cached) yes checking for assert.h... (cached) yes checking for crypt.h... (cached) yes checking for fcntl.h... (cached) yes checking for grp.h... (cached) yes checking for ieeefp.h... (cached) no checking for langinfo.h... (cached) yes checking for limits.h... (cached) yes checking for locale.h... (cached) yes checking for monetary.h... (cached) yes checking for mach-o/dyld.h... (cached) no checking for netdb.h... (cached) yes checking for pwd.h... (cached) yes checking for resolv.h... (cached) yes checking for signal.h... (cached) yes checking for stdarg.h... (cached) yes checking for stdlib.h... (cached) yes checking for string.h... (cached) yes checking for syslog.h... (cached) yes checking for sysexits.h... (cached) yes checking for sys/ioctl.h... (cached) yes checking for sys/file.h... (cached) yes checking for sys/mman.h... (cached) yes checking for sys/mount.h... (cached) yes checking for sys/poll.h... (cached) yes checking for sys/resource.h... (cached) yes checking for sys/select.h... (cached) yes checking for sys/socket.h... (cached) yes checking for sys/statfs.h... (cached) yes checking for sys/statvfs.h... (cached) yes checking for sys/vfs.h... (cached) yes checking for sys/sysexits.h... (cached) no checking for sys/varargs.h... (cached) no checking for sys/wait.h... (cached) yes checking for termios.h... (cached) yes checking for unistd.h... (cached) yes checking for unix.h... (cached) no checking for utime.h... (cached) yes checking for sys/utsname.h... (cached) yes checking for sys/ipc.h... (cached) yes checking for dlfcn.h... (cached) yes checking for assert.h... (cached) yes checking for fopencookie... (cached) yes checking for broken getcwd... no checking for broken libc stdio... yes checking whether struct tm is in sys/time.h or time.h... (cached) time.h checking for tm_zone in struct tm... (cached) yes checking for missing declarations of reentrant functions... done checking for fclose declaration... ok checking for tm_gmtoff in struct tm... (cached) yes checking for struct flock... (cached) yes checking for socklen_t... (cached) yes checking size of intmax_t... (cached) 0 checking size of size_t... (cached) 4 checking size of ssize_t... (cached) 0 checking size of ptrdiff_t... (cached) 0 checking size of long long... (cached) 8 checking size of long long int... (cached) 8 checking size of long... (cached) 4 checking size of int... (cached) 4 checking for st_blksize in struct stat... (cached) yes checking for st_blocks in struct stat... (cached) yes checking for st_rdev in struct stat... (cached) yes checking for size_t... (cached) yes checking for uid_t in sys/types.h... (cached) yes checking for struct sockaddr_storage... (cached) yes checking for field sa_len in struct sockaddr... (cached) no checking for IPv6 support... (cached) yes checking for vprintf... (cached) yes checking for alphasort... (cached) yes checking for asctime_r... (cached) yes checking for chroot... (cached) yes checking for ctime_r... (cached) yes checking for cuserid... (cached) yes checking for crypt... (cached) no checking for flock... (cached) yes checking for ftok... (cached) yes checking for funopen... (cached) no checking for gai_strerror... (cached) yes checking for gcvt... (cached) yes checking for getloadavg... (cached) yes checking for getlogin... (cached) yes checking for getprotobyname... (cached) yes checking for getprotobynumber... (cached) yes checking for getservbyname... (cached) yes checking for getservbyport... (cached) yes checking for getrusage... (cached) yes checking for gettimeofday... (cached) yes checking for gmtime_r... (cached) yes checking for grantpt... (cached) yes checking for inet_ntoa... (cached) yes checking for inet_ntop... (cached) yes checking for inet_pton... (cached) yes checking for isascii... (cached) yes checking for link... (cached) yes checking for localtime_r... (cached) yes checking for lockf... (cached) yes checking for lchown... (cached) yes checking for lrand48... (cached) yes checking for memcpy... (cached) yes checking for memmove... (cached) yes checking for mkstemp... (cached) yes checking for mmap... (cached) yes checking for nl_langinfo... (cached) yes checking for perror... (cached) yes checking for poll... (cached) yes checking for ptsname... (cached) yes checking for putenv... (cached) yes checking for realpath... (cached) yes checking for random... (cached) yes checking for rand_r... (cached) yes checking for regcomp... (cached) yes checking for res_search... (cached) yes checking for scandir... (cached) yes checking for setitimer... (cached) yes checking for setlocale... (cached) yes checking for localeconv... (cached) yes checking for setpgid... (cached) yes checking for setsockopt... (cached) yes checking for setvbuf... (cached) yes checking for shutdown... (cached) yes checking for sin... (cached) yes checking for snprintf... (cached) yes checking for srand48... (cached) yes checking for srandom... (cached) yes checking for statfs... (cached) yes checking for statvfs... (cached) yes checking for std_syslog... (cached) no checking for strcasecmp... (cached) yes checking for strcoll... (cached) yes checking for strdup... (cached) yes checking for strerror... (cached) yes checking for strftime... (cached) yes checking for strptime... (cached) yes checking for strstr... (cached) yes checking for strtok_r... (cached) yes checking for symlink... (cached) yes checking for tempnam... (cached) yes checking for tzset... (cached) yes checking for unlockpt... (cached) yes checking for unsetenv... (cached) yes checking for usleep... (cached) yes checking for nanosleep... (cached) yes checking for utime... (cached) yes checking for vsnprintf... (cached) yes checking for getaddrinfo... (cached) yes checking for strlcat... (cached) no checking for strlcpy... (cached) no checking for getopt... (cached) yes checking whether utime accepts a null argument... (cached) yes checking for working alloca.h... (cached) yes checking for alloca... (cached) yes checking for declared timezone... (cached) yes checking for type of reentrant time-related functions... (cached) POSIX checking for readdir_r... (cached) yes checking for type of readdir_r... (cached) POSIX checking for in_addr_t... (cached) yes General settings checking whether to include gcov symbols... no checking whether to include debugging symbols... no checking layout of installed files... PHP checking path to configuration file... /etc/apache2 checking where to scan for configuration files... DEFAULT checking whether to enable safe mode by default... yes checking for safe mode exec dir... /usr/local/php/bin checking whether to enable PHP's own SIGCHLD handler... yes checking whether to enable magic quotes by default... yes checking whether to enable runpaths... no checking whether to explicitly link against libgcc... no checking whether to enable short tags by default... yes checking whether to enable dmalloc... no checking whether to enable IPv6 support... no checking how big to make fd sets... using system default checking whether to enable versioning... no Configuring extensions checking whether to enable LIBXML support... yes checking libxml2 install dir... no checking for xml2-config path... (cached) /usr/bin/xml2-config checking whether libxml build works... (cached) yes checking for OpenSSL support... yes checking for Kerberos support... no checking for pkg-config... (cached) /usr/bin/pkg-config checking for PCRE support... yes checking for ZLIB support... yes checking if the location of ZLIB install directory is defined... no checking for gzgets in -lz... (cached) yes checking whether to enable bc style precision math functions... yes checking for BZip2 support... yes checking for BZip2 in default path... found in /usr checking for BZ2_bzerror in -lbz2... (cached) yes checking whether to enable calendar conversion support... yes checking whether to enable ctype functions... yes checking for CURL support... yes checking if we should use CURL for url streams... no checking for CURL in default path... found in /usr checking for cURL 7.10.5 or greater... libcurl 7.12.2 checking for SSL support in libcurl... yes checking for SSL library used... openssl checking for openssl/crypto.h... (cached) yes checking for curl_easy_perform in -lcurl... (cached) yes checking for curl_version_info in -lcurl... (cached) yes checking size of long... (cached) 4 checking size of int... (cached) 4 checking for int32_t... (cached) yes checking for uint32_t... (cached) yes checking for sys/types.h... (cached) yes checking for inttypes.h... (cached) yes checking for stdint.h... (cached) yes checking for string.h... (cached) yes checking for stdlib.h... (cached) yes checking for strtoll... (cached) yes checking for atoll... (cached) yes checking for strftime... (cached) yes checking whether to enable DBA... yes checking for QDBM support... no checking for gdbm_open in -lgdbm... (cached) yes checking for GDBM support... yes checking for NDBM support... no checking for db4 minor version and patch level... ok checking for Berkeley DB4 support... yes checking for Berkeley DB3 support... no checking for Berkeley DB2 support... no checking for DB1 support... no checking for DBM support... no checking for CDB support... builtin checking for INI File support... builtin checking for FlatFile support... builtin checking whether to enable DBA interface... yes checking whether to enable dbase support... yes checking whether to enable DOM support... yes checking for xml2-config path... (cached) /usr/bin/xml2-config checking whether libxml build works... (cached) yes checking whether to enable EXIF (metadata from images) support... yes checking for FrontBase SQL92 (fbsql) support... no checking for FDF support... no checking whether to enable the bundled filePro support... no checking whether to enable FTP support... yes checking OpenSSL dir for FTP... no checking for GD support... yes checking for the location of libjpeg... /usr checking for the location of libpng... /usr checking for the location of libXpm... no checking for FreeType 1.x support... no checking for FreeType 2... /usr checking for T1lib support... no checking whether to enable truetype string function in GD... yes checking whether to enable JIS-mapped Japanese font support in GD... no checking for jpeg_read_header in -ljpeg... (cached) yes checking for png_write_image in -lpng... (cached) yes If configure fails try --with-xpm-dir= checking for gdImageString16 in -lgd... no checking for gdImagePaletteCopy in -lgd... no checking for gdImageCreateFromPng in -lgd... no checking for gdImageCreateFromGif in -lgd... no checking for gdImageGif in -lgd... no checking for gdImageWBMP in -lgd... no checking for gdImageCreateFromJpeg in -lgd... no checking for gdImageCreateFromXpm in -lgd... no checking for gdImageCreateFromGd2 in -lgd... no checking for gdImageCreateTrueColor in -lgd... no checking for gdImageSetTile in -lgd... no checking for gdImageEllipse in -lgd... no checking for gdImageSetBrush in -lgd... no checking for gdImageStringTTF in -lgd... no checking for gdImageStringFT in -lgd... no checking for gdImageStringFTEx in -lgd... no checking for gdImageColorClosestHWB in -lgd... no checking for gdImageColorResolve in -lgd... no checking for gdImageGifCtx in -lgd... no checking for gdCacheCreate in -lgd... no checking for gdFontCacheShutdown in -lgd... no checking for gdFreeFontCache in -lgd... no checking for gdNewDynamicCtxEx in -lgd... no checking for gdImageCreate in -lgd... no configure: error: GD build test failed. Please check the config.log for details. config.log: configure:34212: checking whether to enable truetype string function in GD configure:34237: checking whether to enable JIS-mapped Japanese font support in GD configure:36329: checking for jpeg_read_header in -ljpeg configure:36628: checking for png_write_image in -lpng configure:38150: checking for gdImageString16 in -lgd configure:38169: gcc -o conftest -g -O2 -Wl,-rpath,/usr/local/lib -L/usr/local/lib -L/usr/lib -Wl,-rpath,/lib -L/lib -Wl,-rpath,/usr/local/ lib -L/usr/local/lib conftest.c -lgd -lgd -lfreetype -lpng -lz -ljpeg -ldb-4.2 -ldb-4.2 -lgdbm -lcurl -lbz2 -lz -lresolv -lm -ldl -lnsl -lx ml2 -lz -lm -lssl -lcrypto -ldl -lcurl -lidn -lssl -lcrypto -ldl -lssl -lcrypto -ldl -lz -lxml2 -lz -lm -lssl -lcrypto -ldl 1>&5 /usr/local/lib/libgd.so: undefined reference to `libiconv_open' /usr/local/lib/libgd.so: undefined reference to `libiconv_close' /usr/local/lib/libgd.so: undefined reference to `libiconv' collect2: ld returned 1 exit status configure: failed program was: #line 38158 "configure" #include "confdefs.h" /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */