Can't compile VirtualBox OSE on gentoo-hardened-amd64

[mikb]

I can't get OSE to build on my hardened Gentoo system (amd64). I've actually had this problem with every version since about 2.1.4. I'm using gcc 4.3. Here's the error I see from trying 3.0.0:

Code: Select all

  CXX     RuntimeR0 - {C}/src/VBox/Runtime/common/checksum/crc32.cpp                                                                                                                                
/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/src/VBox/Runtime/common/checksum/crc32.cpp:1: error: code model kernel does not support PIC mode                      
/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/src/VBox/Runtime/common/checksum/crc32.cpp:1: error: code model 'kernel' not supported in the 64 bit mode             
kmk[2]: *** [/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/out/linux.amd64/release/obj/RuntimeR0/common/checksum/crc32.o] Error 1                                   
The failing command:                                                                                                                                                                                
@x86_64-pc-linux-gnu-g++ -c -O2 -nostdinc -g -pipe -pedantic -Wall -Wextra -Wno-missing-field-initializers -Wno-unused -Wno-trigraphs -Wno-long-long -Wno-variadic-macros -fno-rtti -fno-exceptions -O2 -mtune=generic -fno-omit-frame-pointer -fno-strict-aliasing -fno-stack-protector -fvisibility-inlines-hidden -fvisibility=hidden -DVBOX_HAVE_VISIBILITY_HIDDEN -DRT_USE_VISIBILITY_DEFAULT -m64 -mno-red-zone -mcmodel=kernel -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -fno-asynchronous-unwind-tables -I/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/src/VBox/Runtime/include -I/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/include/iprt/nocrt -I/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/include -I/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/out/linux.amd64/release -DVBOX -DVBOX_OSE -DVBOX_WITH_64_BITS_GUESTS -DVBOX_WITH_HARDENING -DRTPATH_APP_PRIVATE=\"/usr/share/virtualbox-ose\" -DRTPATH_APP_PRIVATE_ARCH=\"/usr/lib64/virtualbox-ose\" -DRTPATH_SHARED_LIBS=\"/usr/lib64/virtualbox-ose\" -DRTPATH_APP_DOCS=\"\" -DRT_OS_LINUX -D_FILE_OFFSET_BITS=64 -DRT_ARCH_AMD64 -D__AMD64__ -DIN_RING0 -DIN_RING0_AGNOSTIC -DIPRT_NO_CRT -DRT_WITH_NOCRT_ALIASES -DHC_ARCH_BITS=64 -DGC_ARCH_BITS=64 -DIN_RT_R0 -DRT_WITH_VBOX -Wp,-MD,/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/out/linux.amd64/release/obj/RuntimeR0/common/checksum/crc32.o.dep -Wp,-MT,/var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/out/linux.amd64/release/obj/RuntimeR0/common/checksum/crc32.o -Wp,-MP -o /var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/out/linux.amd64/release/obj/RuntimeR0/common/checksum/crc32.o /var/tmp/portage/app-emulation/virtualbox-ose-3.0.0/work/VirtualBox-3.0.0_OSE/src/VBox/Runtime/common/checksum/crc32.cpp                                                        

The problem appears to be that gcc is implicitly building PIC, but the kernel model (needed for the RING0 code) doesn't support relocation? Any one familiar enough with Gcc to know how to override this?

Any help would be appreciated.

[frank]

Well, the Gentoo bug mentions that you can compile the code with -fno-PIC.