Firefox ESR 31 does need a newer compiler than GCC 4.4 on Linux
Since bug 894242 landed (https://bugzilla.mozilla.org/show_bug.cgi?id=894242) building with GCC 4.4 out-of-the-box is not possible anymore:
configure: error: Your toolchain does not support C++0x/C++11 mode properly. Please upgrade your toolchain
------ config.log ------
#include "confdefs.h"
#include <sys/utsname.h>
int main() {
struct utsname *res; char *domain;
(void)uname(res); if (res != 0) { domain = res->__domainname; }
; return 0; }
configure:10345: checking for gcc c++0x headers bug without rtti
configure:10357: c++ -c -fno-exceptions -fno-strict-aliasing -fno-rtti -ffunction-sections -fdata-sections -fno-exceptions -std=gnu++0x conftest.C 1>&5
In file included from /usr/include/c++/4.4/memory:83,
from configure:10351:
/usr/include/c++/4.4/bits/shared_ptr.h: In member function 'virtual void* std::_Sp_counted_deleter<_Ptr, _Deleter, _Alloc, _Lp>::_M_get_deleter(const std::type_info&)':
/usr/include/c++/4.4/bits/shared_ptr.h:146: error: cannot use typeid with -fno-rtti
/usr/include/c++/4.4/bits/shared_ptr.h: In member function 'virtual void* std::_Sp_counted_ptr_inplace<_Tp, _Alloc, _Lp>::_M_get_deleter(const std::type_info&)':
/usr/include/c++/4.4/bits/shared_ptr.h:204: error: cannot use typeid with -fno-rtti
/usr/include/c++/4.4/bits/shared_ptr.h: In constructor 'std::__shared_ptr<_Tp, _Lp>::__shared_ptr(std::_Sp_make_shared_tag, _Alloc, _Args&& ...)':
/usr/include/c++/4.4/bits/shared_ptr.h:861: error: cannot use typeid with -fno-rtti
/usr/include/c++/4.4/bits/shared_ptr.h: In function '_Del* std::get_deleter(const std::__shared_ptr<_Tp2, _Lp>&)':
/usr/include/c++/4.4/bits/shared_ptr.h:1005: error: cannot use typeid with -fno-rtti
configure: failed program was:
#line 10350 "configure"
#include "confdefs.h"
#include <memory>
int main() {
; return 0; }
*** Fix above errors and then restart with "make -f client.mk build"
make: *** [configure] Error 1