Hi, I've just tried Solaris 10 compilation of last squid 3.3.1. Here is my configure : CFLAGS=-std=c99 ./configure --prefix=$PREFIX --disable-strict-error-checking --localstatedir=/var/squid --with-pthreads --enable-default-err-language=French --enable-err-languages="French" --with-build-environment=POSIX_V6_ILP32_OFFBIG --enable-auth-basic="LDAP NCSA" --enable-digest-auth-helpers=password --enable-external-acl-helpers="ldap_group ip_user" --enable-eui --enable-ssl --with-openssl=/usr/sfw --with-large-files LDFLAGS=-R/usr/sfw/lib Configure passed, but compilation failed here : libtool: compile: g++ -DHAVE_CONFIG_H -I../.. -I../../include -I../../lib -I../../src -I../../include -I/usr/include/gssapi -I/usr/include/kerberosv5 -I../../libltdl -I/usr/sfw/include -I/usr/include/gssapi -I/usr/include/kerberosv5 -Wall -Wpointer-arith -Wwrite-strings -Wcomments -pipe -D_REENTRANT -pthreads -Usparc -Uunix -Ui386 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -g -O2 -MT ModDevPoll.lo -MD -MP -MF .deps/ModDevPoll.Tpo -c ModDevPoll.cc -fPIC -DPIC -o .libs/ModDevPoll.o In file included from ../../compat/compat_shared.h:202, from ../../compat/compat.h:80, from ../../include/squid.h:66, from ModDevPoll.cc:51: /usr/include/kerberosv5/com_err.h:20: warning: ignoring #pragma ident ModDevPoll.cc: In function `void Comm::SelectLoopInit()': ModDevPoll.cc:224: error: `fd_open' undeclared (first use this function) ModDevPoll.cc:224: error: (Each undeclared identifier is reported only once for each function it appears in.) ModDevPoll.cc: In function `void Comm::SetSelect(int, unsigned int, void (*)(int, void*), void*, time_t)': ModDevPoll.cc:252: error: `fd_table' undeclared (first use this function) ModDevPoll.cc: In function `comm_err_t Comm::DoSelect(int)': ModDevPoll.cc:384: error: `fd_table' undeclared (first use this function) gmake[3]: *** [ModDevPoll.lo] Error 1 gmake[3]: Leaving directory `/export/home/peli/pub.d/squid-3.3.1/src/comm' gmake[2]: *** [all-recursive] Error 1 gmake[2]: Leaving directory `/export/home/peli/pub.d/squid-3.3.1/src' gmake[1]: *** [all] Error 2 gmake[1]: Leaving directory `/export/home/peli/pub.d/squid-3.3.1/src' gmake: *** [all-recursive] Error 1 == Adding --disable-devpoll ===> compilation OK == --disable-devpoll Disable Solaris /dev/poll support. Oracle doc about /dev/poll : == http://docs.oracle.com/cd/E19253-01/816-5177/6mbbc4g9n/index.html The /dev/poll device, associated driver and corresponding manpages may be removed in a future Solaris release. For similar functionality in the event ports framework, see port_create(3C). The /dev/poll driver is a special driver that enables you to monitor multiple sets of polled file descriptors. By using the /dev/poll driver, you can efficiently poll large numbers of file descriptors. Access to the /dev/poll driver is provided through open(2), write(2), and ioctl(2) system calls. == What kind of performance impact could drive disabling devpoll. Greetings PS. Solaris compilation of 3.2 and 3.3 needs the following patch diff xstrto.h xstrto.h.ori 1d0 < #if defined(__cplusplus) 32d30 < #endif