2f3a961487
Note that lld enables relro by default, so that we already had either partial or full RELRO, depending on the state of the BIND_NOW knob. Add a RELRO knob so that the option can be disabled if desired, and so that builds using the GNU toolchain are equivalent to those using the standard Clang/LLVM toolchain. Reviewed by: markj MFC after: 3 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D35545
138 lines
3.9 KiB
Makefile
138 lines
3.9 KiB
Makefile
# $FreeBSD$
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#
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# Option file for bmake builds. These options are available to all users of
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# bmake (including the source tree userland and kernel builds). They generally
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# control how binaries are made, shared vs dynamic, etc and some general options
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# relevant for all build environments.
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#
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# Users define WITH_FOO and WITHOUT_FOO on the command line or in /etc/src.conf
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# and /etc/make.conf files. These translate in the build system to MK_FOO={yes,no}
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# with (usually) sensible defaults.
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#
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# Makefiles must include bsd.opts.mk after defining specific MK_FOO options that
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# are applicable for that Makefile (typically there are none, but sometimes there
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# are exceptions). Recursive makes usually add MK_FOO=no for options that they wish
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# to omit from that make.
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#
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# Makefiles must include bsd.mkopt.mk before they test the value of any MK_FOO
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# variable.
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#
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# Makefiles may also assume that this file is included by bsd.own.mk should it
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# need variables defined there prior to the end of the Makefile where
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# bsd.{subdir,lib.bin}.mk is traditionally included.
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#
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# The old-style YES_FOO and NO_FOO are being phased out. No new instances of them
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# should be added. Old instances should be removed since they were just to
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# bridge the gap between FreeBSD 4 and FreeBSD 5.
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#
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# Makefiles should never test WITH_FOO or WITHOUT_FOO directly (although an
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# exception is made for _WITHOUT_SRCONF which turns off this mechanism
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# completely).
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#
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.if !target(__<bsd.opts.mk>__)
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__<bsd.opts.mk>__:
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.if !defined(_WITHOUT_SRCCONF)
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#
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# Define MK_* variables (which are either "yes" or "no") for users
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# to set via WITH_*/WITHOUT_* in /etc/src.conf and override in the
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# make(1) environment.
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# These should be tested with `== "no"' or `!= "no"' in makefiles.
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# The NO_* variables should only be set by makefiles for variables
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# that haven't been converted over.
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#
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# Only these options are used by bsd.*.mk. KERBEROS and OPENSSH are
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# unfortunately needed to support statically linking the entire
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# tree. su(1) wouldn't link since it depends on PAM which depends on
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# ssh libraries when building with OPENSSH, and likewise for KERBEROS.
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# All other variables used to build /usr/src live in src.opts.mk
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# and variables from both files are documented in src.conf(5).
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__DEFAULT_YES_OPTIONS = \
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ASSERT_DEBUG \
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DEBUG_FILES \
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DOCCOMPRESS \
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INCLUDES \
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INSTALLLIB \
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KERBEROS \
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MAKE_CHECK_USE_SANDBOX \
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MAN \
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MANCOMPRESS \
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NIS \
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NLS \
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OPENSSH \
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RELRO \
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SSP \
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TESTS \
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TOOLCHAIN \
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WARNS \
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WERROR
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__DEFAULT_NO_OPTIONS = \
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ASAN \
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BIND_NOW \
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CCACHE_BUILD \
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CTF \
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INIT_ALL_PATTERN \
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INIT_ALL_ZERO \
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INSTALL_AS_USER \
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MANSPLITPKG \
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PROFILE \
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RETPOLINE \
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STALE_STAGED \
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UBSAN
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__DEFAULT_DEPENDENT_OPTIONS = \
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MAKE_CHECK_USE_SANDBOX/TESTS \
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STAGING_MAN/STAGING \
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STAGING_PROG/STAGING \
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STALE_STAGED/STAGING \
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#
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# Default to disabling PIE on 32-bit architectures. The small address space
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# means that ASLR is of limited effectiveness, and it may cause issues with
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# some memory-hungry workloads.
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#
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.if ${MACHINE_ARCH} == "armv6" || ${MACHINE_ARCH} == "armv7" \
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|| ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" \
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|| ${MACHINE_ARCH} == "powerpcspe"
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__DEFAULT_NO_OPTIONS+= PIE
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.else
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__DEFAULT_YES_OPTIONS+=PIE
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.endif
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.include <bsd.mkopt.mk>
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.if ${MK_INIT_ALL_PATTERN} == "yes" && ${MK_INIT_ALL_ZERO} == "yes"
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.warning WITH_INIT_ALL_PATTERN and WITH_INIT_ALL_ZERO are mutually exclusive.
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.endif
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#
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# Supported NO_* options (if defined, MK_* will be forced to "no",
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# regardless of user's setting).
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#
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# These are transitional and will disappaer in the FreeBSD 12.
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#
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.for var in \
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CTF \
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DEBUG_FILES \
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INSTALLLIB \
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MAN \
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PROFILE \
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WARNS \
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WERROR
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.if defined(NO_${var})
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.error NO_${var} is defined, but deprecated. Please use MK_${var}=no instead.
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MK_${var}:=no
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.endif
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.endfor
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.include <bsd.cpu.mk>
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.endif # !_WITHOUT_SRCCONF
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.endif
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