The cleanobj target will not really remove the OBJDIR in this case,
it will only remove the OBJDIR if only clean targets are ran.
Sponsored by: Dell EMC Isilon
When AUTO_OBJ is enabled this change becomes redundant with the auto.obj.mk
check added in r325404. However, it is possible that new code is added
at some point between src.sys.obj.mk and auto.obj.mk that disables AUTO_OBJ.
That could leave make with a bogus and unsafe .OBJDIR in some cases.
Sponsored by: Dell EMC Isilon
auto.obj.mk is loaded before the Makefile which may have NO_OBJ set inside of
it. In that case we can't avoid creating the OBJDIR but we do need to avoid
using it. Fixing .OBJDIR in bsd.init.mk at least fixes all of the build .mk
files to have a proper .OBJDIR. It does not fix the Makefile itself but
usually if they have NO_OBJ set they are not inspecting ${.OBJDIR} anyhow.
It is ideal to only have this in bsd.init.mk and to remove it from bsd.obj.mk,
but then bsd.obj.mk would need to include bsd.init.mk. Doing something like
that would require more testing. It has been proposed that bsd.obj.mk not be
included directly but it has been possible for too long to do so to change it
at this point.
Note too that it may make sense to fix .OBJDIR even when AUTO_OBJ is not
enabled but the historical behavior has always been that NO_OBJ just avoids
running 'make obj', so .OBJDIR should already be .CURDIR.
Also while NO_OBJ seems like it should be removed at this point, it is not
always possible to fix Makefiles to properly use an .OBJDIR. The cost of
keeping NO_OBJ support is minimal.
Sponsored by: Dell EMC Isilon
Forcing MK_AUTO_OBJ to no is not really needed since bsd.obj.mk is protected
against 'rm -rf ${.CURDIR}' already. It was also flawed as if MK_AUTO_OBJ=yes
was in the .MAKEOVERRIDES already then it just remained on.
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If for any reason we cannot set .OBJDIR==_objdir as desired
use .CURDIR so that at least the classic
.if ${.OBJDIR} != ${.CURDIR}
works and dangerous misstakes can be avoided.
Reviewed by: bdrewery
This is to prevent downstream checks from assuming they can trust .OBJDIR when
MK_AUTO_OBJ is yes, such as the bsd.obj.mk checks.
Pointyhat to: bdrewery
Sponsored by: Dell EMC Isilon
This will force any existing objects to rebuild if their .meta
files reference files from WORLDTMP. This is a problem after
the UNIFIED_OBJDIR effort caused buildworld and DIRDEPS_BUILD
to share an OBJDIR. Without cleaning these files the
Makefile.depend files end up with odd tmp/legacy/... entries
since some bootstrap-tools linger from there and otherwise
don't rebuild. Removing the files causes anything having
used WORLDTMP to rebuild.
Sponsored by: Dell EMC Isilon
This can be disabled by putting WITHOUT_AUTO_OBJ=yes in /etc/src-env.conf, not
/etc/src.conf, or passing it in the environment.
The purpose of this rather than simply flipping the default of AUTO_OBJ to yes
is to avoid hassling users with auto.obj.mk failures if the wanted OBJDIR is
not writable. It will fallback to writing to the source directory like it does
today if MAKEOBJDIRPREFIX is not writable.
The act of enabling MK_AUTO_OBJ disables all 'make obj' treewalks since
previous work has made those not run if MK_AUTO_OBJ==yes in Makefile.inc1.
Relnotes: yes
Reviewed by: sjg
Discussed at: https://lists.freebsd.org/pipermail/freebsd-arch/2016-May/017805.html
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D12841
This changes the build OBJDIR from the older style of /usr/obj/<srcdir> for
native builds, and /usr/obj/<target>.<target_arch>/<srcdir> for cross builds to
a new simpler format of /usr/obj/<srcdir>/<target>.<target_arch>. This
new format is used regardless of cross or native build. It allows
easier management of multiple source tree object directories.
The UNIFIED_OBJDIR option will be removed and its feature made permanent
for the 12.0 release.
Relnotes: yes (don't note UNIFIED_OBJDIR option since it will be removed)
Prior work: D3711 D874
Reviewed by: gjb, sjg
Discussed at: https://lists.freebsd.org/pipermail/freebsd-arch/2016-May/017805.html
Discussed with: emaste
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D12840
RELSRCTOP is likely not as useful since make will always be running from
inside of .OBJDIR and using something like ${.CURDIR}/${RELSRCTOP} is
not redundant for ${SRCTOP}.
Sponsored by: Dell EMC Isilon
This fixes object files landing in the source tree in gnu/usr.bin/dtc
for GCC platforms.
We cannot reliably detect if an external compiler is used here, and the
default YES option does include GCC_BOOTSTRAP which implies that GCC may
be used for the build.
The problem manifests when not using an external compiler, and the host
compiler is clang. When a fresh build is done (no OBJDIR yet) the
'make obj' treewalk is done before 'make cross-tools', so
COMPILER_FEATURES at this point contains 'c++11' since the host compiler
was used for COMPILER_FEATURES. Once cross-tools builds the GCC
bootstrap compiler and then descends into 'make everything',
COMPILER_FEATURES no longer contains 'c++11' and MK_GPL_DTC defaults to
enabled. Now it builds in gnu/usr.bin/dtc without an OBJDIR preset and
drops files into the source tree.
The COMPILER_FEATURES check here is useful for knowing if we can *bootstrap*
C++11 things. Indeed we do bootstrap dtc as a build tool so it is
useful for enabling the BSD dtc for the build, but we end up needing the
GPL dtc for installation anyway.
Reviewed by: manu, emaste
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D12817
library -- libpmcstat.
This includes PMC logging module, symbols lookup functions,
ELF parsing, process management, PMC attachment, etc.
This allows to reuse code while building new hwpmc(4)-based applications.
Also add pmcstat_symbol_search_by_name() function that allows to find
mapped IP range for a given function name.
Reviewed by: kib
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D12718
