It's an improvement I can build mesa again without EGL 

building with EGL I get errors such as:

../../../../src/gallium/auxiliary/.libs/libgallium.a(lp_bld_debug.o):lp_bld_debug.cpp:function
lp_disassemble: error: undefined reference to
'std::string::_Rep::_S_empty_rep_storage'
../../../../src/gallium/auxiliary/.libs/libgallium.a(lp_bld_debug.o):lp_bld_debug.cpp:function
lp_disassemble: error: undefined reference to
'std::string::_Rep::_S_empty_rep_storage'
../../../../src/gallium/auxiliary/.libs/libgallium.a(lp_bld_debug.o):lp_bld_debug.cpp:function
lp_disassemble: error: undefined reference to
'std::string::_Rep::_S_empty_rep_storage'
../../../../src/gallium/auxiliary/.libs/libgallium.a(lp_bld_debug.o):lp_bld_debug.cpp:function
lp_disassemble: error: undefined reference to
'std::string::_Rep::_S_empty_rep_storage'
/usr/lib32/llvm/libLLVMX86CodeGen.a(X86FrameLowering.o):function
emitSPUpdate(llvm::MachineBasicBlock&,
llvm::MachineBasicBlock::bundle_iterator<llvm::MachineInstr,
llvm::ilist_iterator<llvm::MachineInstr> >&, unsigned int, long long, bool,
bool, llvm::TargetInstrInfo const&, llvm::TargetRegisterInfo const&): error:
undefined reference to 'std::_Rb_tree_decrement(std::_Rb_tree_node_base*)'
/usr/lib32/llvm/libLLVMX86CodeGen.a(X86FrameLowering.o):function
emitSPUpdate(llvm::MachineBasicBlock&,
llvm::MachineBasicBlock::bundle_iterator<llvm::MachineInstr,
llvm::ilist_iterator<llvm::MachineInstr> >&, unsigned int, long long, bool,
bool, llvm::TargetInstrInfo const&, llvm::TargetRegisterInfo const&): error:
undefined reference to 'std::_Rb_tree_decrement(std::_Rb_tree_node_base*)'