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freebsd-dev/sys/boot/Makefile.inc

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Enable GCC stack protection (aka Propolice) for userland: - It is opt-out for now so as to give it maximum testing, but it may be turned opt-in for stable branches depending on the consensus. You can turn it off with WITHOUT_SSP. - WITHOUT_SSP was previously used to disable the build of GNU libssp. It is harmless to steal the knob as SSP symbols have been provided by libc for a long time, GNU libssp should not have been much used. - SSP is disabled in a few corners such as system bootstrap programs (sys/boot), process bootstrap code (rtld, csu) and SSP symbols themselves. - It should be safe to use -fstack-protector-all to build world, however libc will be automatically downgraded to -fstack-protector because it breaks rtld otherwise. - This option is unavailable on ia64. Enable GCC stack protection (aka Propolice) for kernel: - It is opt-out for now so as to give it maximum testing. - Do not compile your kernel with -fstack-protector-all, it won't work. Submitted by: Jeremie Le Hen <jeremie@le-hen.org>
2008-06-25 21:33:28 +00:00
# $FreeBSD$
Compile loader as Little-Endian on PPC64/POWER8 Add flag to the makefile to allow loader compilation as Little-Endian 32-bit executable. Usage: make WITH_LOADER_FORCE_LE=yes -C sys/boot all Submitted by: Wojciech Macek <wma@freebsd.org> Reviewed by: imp, nwhitehorn Obtained from: Semihalf Sponsored by: QCM Technologies Differential revision: https://reviews.freebsd.org/D12421
2017-09-29 06:36:19 +00:00
.include <src.opts.mk>
Similar to r293384 and r293426, for sys/boot, also use the new -mno-movt flag with clang >= 3.8.0 targeting arm.
2016-02-11 20:16:11 +00:00
Define SASRC and use it Define SASRC to point to the current libstand sources. Include ../Makefile.inc early enough in a few places so we can .include "${SASRC}/Makefile" and have it work. Create a new pass-up Makefile.inc in sys/boot/userboot to allow this pattern to work. Sponsored by: Netflix
2017-10-09 22:12:32 +00:00
.if !defined(__BOOT_MAKEFILE_INC__)
__BOOT_MAKEFILE_INC__=${MFILE}
SASRC=${SRCTOP}/lib/libstand
Define LIBSA* and use them instead of overloaded LIBSTAND LIBSA is the current stand alone library. LIBSA32 is the 32-bit version of the library. LIBSAU is the userboot version of libsa. Use the proper define instead of the more generic define. Sponsored by: Netflix
2017-10-09 22:12:46 +00:00
# Normal stand alone library
Create sys/boot/libsa and build libstand.a there Build libstand from inside the sys/boot build. Redirect all users in sys/boot to grab it from there. We still build it as libstand.a for the moment. When lib/libstand is moved here, we'll change the name. Sponsored by: Netflix
2017-10-09 22:12:53 +00:00
LIBSA=${OBJTOP}/sys/boot/libsa/libstand.a
Define LIBSA* and use them instead of overloaded LIBSTAND LIBSA is the current stand alone library. LIBSA32 is the 32-bit version of the library. LIBSAU is the userboot version of libsa. Use the proper define instead of the more generic define. Sponsored by: Netflix
2017-10-09 22:12:46 +00:00
# stand alone library compiled for 32-bit version of the processor
LIBSA32=${OBJTOP}/sys/boot/libstand32/libstand.a
# stand along library compiled for userboot
LIBSAU=${OBJTOP}/sys/boot/userboot/libstand/libstand.a
Define SASRC and use it Define SASRC to point to the current libstand sources. Include ../Makefile.inc early enough in a few places so we can .include "${SASRC}/Makefile" and have it work. Create a new pass-up Makefile.inc in sys/boot/userboot to allow this pattern to work. Sponsored by: Netflix
2017-10-09 22:12:32 +00:00
Fix build when WITH_SSP is set explicitly. Submitted by: Jeremie Le Hen
2009-02-21 15:04:31 +00:00
SSP_CFLAGS=
Stop clang from generating movt/movw sequences. These don't get relocated so will access data from an unrelocated address. This is only needed for self relocating code on ARMv7, however this is true for both ubldr and loader.efi, the only two loaders we support on ARMv7. While here also force the fpu to be none as is done in libstand. Sponsored by: ABT Systems Ltd
2016-02-09 00:15:41 +00:00
.if ${MACHINE_CPUARCH} == "arm"
# Do not generate movt/movw, because the relocation fixup for them does not
# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
# Also, the fpu is not available in a standalone environment.
Similar to r293384 and r293426, for sys/boot, also use the new -mno-movt flag with clang >= 3.8.0 targeting arm.
2016-02-11 20:16:11 +00:00
.if ${COMPILER_VERSION} < 30800
CFLAGS.clang+= -mllvm -arm-use-movt=0
.else
CFLAGS.clang+= -mno-movt
.endif
Stop clang from generating movt/movw sequences. These don't get relocated so will access data from an unrelocated address. This is only needed for self relocating code on ARMv7, however this is true for both ubldr and loader.efi, the only two loaders we support on ARMv7. While here also force the fpu to be none as is done in libstand. Sponsored by: ABT Systems Ltd
2016-02-09 00:15:41 +00:00
CFLAGS.clang+= -mfpu=none
.endif
dd is currently a bootstrap tool. It really doesn't have any business being a bootstrap tool. However, for reproducible build output, FreeBSD added dd status=none because it was otherwise difficult to suppress the status information, but retain any errors that might happen. There's no real reason that dd has to be a build tool, other than we use status=none unconditional. Remove dd from a bootstrap tool entirely by only using status=none when available. This may also help efforts to build the system on non-FreeBSD hosts as well. Differential Revision: https://reviews.freebsd.org/D8605
2016-12-02 14:44:38 +00:00
# The boot loader build uses dd status=none, where possible, for reproducible
# build output (since performance varies from run to run). Trouble is that
# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
# when this test succeeds rather than require dd to be a bootstrap tool.
DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
DD=dd ${DD_NOSTATUS}
Compile loader as Little-Endian on PPC64/POWER8 Add flag to the makefile to allow loader compilation as Little-Endian 32-bit executable. Usage: make WITH_LOADER_FORCE_LE=yes -C sys/boot all Submitted by: Wojciech Macek <wma@freebsd.org> Reviewed by: imp, nwhitehorn Obtained from: Semihalf Sponsored by: QCM Technologies Differential revision: https://reviews.freebsd.org/D12421
2017-09-29 06:36:19 +00:00
.if ${MK_LOADER_FORCE_LE} != "no"
.if ${MACHINE_ARCH} == "powerpc64"
CFLAGS+= -mlittle-endian
.endif
Define SASRC and use it Define SASRC to point to the current libstand sources. Include ../Makefile.inc early enough in a few places so we can .include "${SASRC}/Makefile" and have it work. Create a new pass-up Makefile.inc in sys/boot/userboot to allow this pattern to work. Sponsored by: Netflix
2017-10-09 22:12:32 +00:00
.endif
Compile loader as Little-Endian on PPC64/POWER8 Add flag to the makefile to allow loader compilation as Little-Endian 32-bit executable. Usage: make WITH_LOADER_FORCE_LE=yes -C sys/boot all Submitted by: Wojciech Macek <wma@freebsd.org> Reviewed by: imp, nwhitehorn Obtained from: Semihalf Sponsored by: QCM Technologies Differential revision: https://reviews.freebsd.org/D12421
2017-09-29 06:36:19 +00:00
.endif
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