gcc120: Remove unneeded 'supcxx' group from libstdcxx/libconv_2011
The '-I${SRCDIR}/libsupc++' parameter is already added via
libstdcxx/Makefile.inc, so the 'supcxx' flags group is not needed.
kmod.mk: Remove redundant '-fno-omit-frame-pointer' CFLAGS
This flag is already added by platform/{pc64,vkernel64}/conf/kern.mk, so
no need to add it again.
amdgpu: Improve makefile for sources that require double floats
* Use a '.for' loop expression to reduce duplicate.
* Remove the unported/unavailable sources: dcn20_resource.o,
dcn21_resource.o
* Remove the unneeded '-mpreferred-stack-boundary=4' compiler flag,
which is the default on x86_64. (Linux's amdgpu requires this because
the kernel sets '-mpreferred-stack-boundary=3' as the global default.)
* Add '-msse2' to enable SSE2 and thus better generate double precision
FP instructions. [1][2]
[1] drm/amd/display: readd -msse2 to prevent Clang from emitting
libcalls to undefined SW FP routines
https://github.com/torvalds/linux/commit/0f0727d971f6fdf8f1077180d495ddb9928f0c8b
[2] drm/amdgpu: enable -msse2 for GCC 7.1+ users
https://github.com/torvalds/linux/commit/e8a170ff9a3576730e43c0dbdd27b7cd3dc56848
kern.mk: Simplify and improve FPU/SIMD compiler flags
* Simplify and modernize the global kernel compiler flags for disabling
FPU/SIMD to be:
-mno-mmx -mno-sse -msoft-float -mno-fp-ret-in-387
while the various -mno-* flags are removed as they are already implied
by the above flags. This reduces maintenance burden and is similarly
adopted by FreeBSD and Linux kernel.
* Drop '-mfpmath=387' to allow the compiler to choose the 'sse' backend
when SSE/SSE2 is explicitly enabled. (further explained below for
amdgpu sources)
* Also remove the redundant '-mpreferred-stack-boundary=4' option, which
is the default on x86_64.
To validate correctness, all kernel objects were rebuilt and compared
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pc64: Replace SMSW/LMSW with MOV CR0
The SMSW and LMSW instructions are deprecated and provided for
compatibility with 80286.
Intel SDM Volume 2 Section 4.3:
> This instruction is provided for compatibility with the Intel 286
> processor; programs and procedures intended to run on IA-32 and Intel
> 64 processors beginning with Intel386 processors should use the MOV
> (control registers) instruction to load the whole CR0 register.
Obtained-from: FreeBSD (commit d706ec297a60775e242168eecbb5160cc692c9a6)
Discussed-with: dillon
kernel - Fix console access by non-root
* Fix console access via /dev/tty or /dev/ttyv* via a user login,
when logged in as that user.
The priv check was only allowing root access and needed a flag to
also allow matching users access.
* Note that console access from a restricted root "root" user such
as from a jail is not allowed (intentionally), because console ioctls
can be dangerous.
Reported-by: aly, peeterm
fsck_hammer2 - Print recursion stack with error message
* Print the full blockref spec (that can be used in a "hammer2 show")
* Print the recursion stack leading up to and including the error block.
* Errored blocks and stack are printed without needing any -d options.
Note that two -d opts will dump the full stack during the scan, which
could end up being terrabytes of text so... maybe don't do that.
etc/Makefile: Skip directories in 'check-deprecated-files'
Skip directories so we don't list the directories containing the
deprecated files in the end.
For example, the line `/usr/lib/gcc47 is deprecated` will not appear
after this change:
```
===> Checking for deprecated files
(harmless ELF linker warnings may appear here)
/lib/libprivate_crypto.so.45 is deprecated
/lib/libprivate_crypto.so.46 is deprecated
/lib/libprivate_ssl.so.47 is deprecated
/lib/libprivate_ssl.so.48 is deprecated
/usr/lib/gcc47/libgomp.so.1 is deprecated
/usr/lib/gcc47/libssp.so.0 is deprecated
/usr/lib/gcc47/libstdc++.so.9 is deprecated
/usr/lib/gcc47 is deprecated
==================================================================
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gcc47: Unhook build and remove makefiles
We had been keeping GCC 4.7.4 for a long time because it's the last GCC
that was written in pure C and thus can be bootstrapped with a C
compiler. However, GCC 4.7.4 only has experimental C++11 support, so
it's unable to compile the newly imported GCC 12.5.
There are too many missing pieces in GCC 4.7.4 for it to be able to
compile GCC 12.5. A more feasible method would be to patch GCC 12.5
sources to avoid the unsupported C++11 features. Even we could tweak
the GCC 12.5 source to make it compilable by GCC 4.7.4, it's a big
burden to maintain it and to import a newer GCC like 14.x/15.x.
In conclusion, there is really no much point in keeping GCC 4.7.4
anymore given that it cannot build the world now.
Discussed-with: swildner
gcc80: Add MKDEPCC=${CXX} for drivers/{c++,cc,cpp,gcov}
The four drivers define ${SRCS} of .c files but actually use/require a
C++ compiler to compile them, so add MKDEPCC=${CXX} to ensure "mkdep"
working correctly for future-proof.
Meanwhile, add the 'hack to force c++ compiler' comment to libcommon and
libcommon-target makefiles as they're already doing so.
Suggested-by: swildner
stand: Fix zf_open() by providing 'zalloc' and 'zfree' hooks
When Z_SOLO is defined, zlib is built for a standalone environment,
where there is no host memory management, so the caller must provides
the 'zalloc' and 'zfree' hooks. Otherwise, inflateInit2() would return
-2 (Z_STREAM_ERROR).
This fixes the failure of booting into rescue mode because loader failed
to decompress 'initrd.img.gz':
```
zf_open: inflateInit returned -2 : (null)
Unable to load /kernel/initrd.img
```
gcc120: Adjust LDADD and add DPADD for libstdcxx/product
* Adjust LDADD to move '-lm' out of --whole-archive scope, aligning with
the GCC's own Makefile rules.
* Add DPADD to define the necessary library dependencies.
gcc120: Add '.ORDER' to fix race in libstdcxx/headers
Add '.ORDER' rules to create directories before generating the header
files. I observed the race failure on my 3700X desktop with -j16.
share/mk: Allow per-group flags to override default compile flags
Per-group flags support was introduced in commit
6d68f83fef807ce255df27c2482db0d58ff71744, but the per-group flags (i.e.,
${${_FG}_FLAGS} and ${_${.IMPSRC}_FLAGS}) were listed *before* the
default/common compile flags (e.g., ${CFLAGS}). As a result, there was
no way for per-group flags to override the default compile flags, which
was counter-intuitive and made the feature less useful.
This commit splits the per-group flags into '-I' flags and non-'-I'
flags, and reorders the non-'-I' flags *after* the default compile flags,
allowing them to be overridden on a per-group basis as needed.
An immediate beneficiary will be gnu/lib/gccXX/libstdcxx, which requires
multiple file groups to override the default compile flags.
gcc120: Clean up libstdcxx/libconv_supc's Makefile
The 'gnu11', 'gnu14', and 'gnu1z' flags groups were inherited from gcc80
and are not needed for gcc120, so just remove them.
gcc120: Simplify libstdcxx makefiles
With the last commit allowing the per-group flags to override the
default flags, the libstdcxx makefiles can be simplified a lot.
gcc80: Fix libstdcxx/product/Makefile similar to gcc120's
Similar to the same adjustments to gcc120's, apply the same LDADD and
DPADD changes to gcc80's libstdcxx/product/Makefile. In addition,
remove the unused ARADD, because we're using custom AR script to create
the static archive.
vendor/GCC80: Bring in two fixes from upstream.
These fix -Wmissing-template-keyword and -Wregister warnings we were
getting when building gcc-8.3 with gcc-12.5.
commit 642dc602f89b2c11d5d833a52f37b04427a27cab
Author: Marek Polacek <polacek at redhat.com>
Date: Fri May 15 17:54:05 2020 -0400
c++: Regenerate cp/cfns.h.
Current cfns.h includes register-qualified variables and that wouldn't
play well when bootstrapping with GCC that uses the C++17 dialect,
because 'register' was removed in C++17. Regenerating it using the
command specified in cfns.h luckily cleaned this up.
* cfns.h: Regenerated.
commit fccd5b48adf568f0aabe5d5f51206a9d42da095a
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Fix the two -Wdangling-pointer warnings in world.
Move line[] to function scope.
-Wdangling-pointer was introduced in GCC 12 and is part of -Wall.
Taken-from: FreeBSD
