I am trying to build squid-3.HEAD on Ubuntu 11 but i am getting the following compilation errors. /bin/bash ../../libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I../.. -I../../include -I../../lib -I../../src -I../../include -I../../libltdl -Wall -Wpointer-arith -Wwrite-strings -Wcomments -Werror -pipe -D_REENTRANT -g -O2 -std=c++0x -MT Acl.lo -MD -MP -MF .deps/Acl.Tpo -c -o Acl.lo Acl.cc libtool: compile: g++ -DHAVE_CONFIG_H -I../.. -I../../include -I../../lib -I../../src -I../../include -I../../libltdl -Wall -Wpointer-arith -Wwrite-strings -Wcomments -Werror -pipe -D_REENTRANT -g -O2 -std=c++0x -MT Acl.lo -MD -MP -MF .deps/Acl.Tpo -c Acl.cc -fPIC -DPIC -o .libs/Acl.o In file included from ../../src/ProtoPort.h:12:0, from Acl.cc:40: /src/ssl/gadgets.h:57:1: error: variable or field 'TXT_DB_free_cpp' declared void ../../src/ssl/gadgets.h:57:1: error: 'TXT_DB' was not declared in this scope ../../src/ssl/gadgets.h:57:1: error: 'a' was not declared in this scope ../../src/ssl/gadgets.h:58:21: error: 'TXT_DB' was not declared in this scope ../../src/ssl/gadgets.h:58:29: error: 'TXT_DB_free_cpp' was not declared in this scope ../../src/ssl/gadgets.h:58:44: error: template argument 1 is invalid ../../src/ssl/gadgets.h:58:44: error: template argument 2 is invalid ../../src/ssl/gadgets.h:58:60: error: invalid type in declaration before ';' token The version for open-ssl is "1.0.0e-2ubuntu4.6"(latest) and gcc is "4:4.6.1". What can be the issue and how to resolve it. -- Regards, -Ahmed Talha Khan