In order to detect more issues in our code, make GCC more picky by
enabling -Wextra. Disable a couple of warnings turned on by -Wextra
temporarily in order to keep everything compiling and working for now.
The warnings may be enabled step by step later.
Since xcompiles applies to coreboot and libpayload, add Wextra here
instead of the top-level Makefile.mk.
Change-Id: I60915cb66581dc2c9b6807335fd0e214b45e76d6
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83347
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
It looks like some unused artifact: The PPC64 Makefile.mk doesn't
pick it up. Also, the only other architecture using this (x86) has
linker flags there, not compiler flags.
Change-Id: I734542db9ee5b62d9a39d303d4092cd83dfef54b
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83577
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
When the compiler is used as a linker frontend clang tries to match the
target string with what it supports internally. If it's not sufficiently
complete it will forward linking to GCC which is not desirable. This is
necessary when doing LTO with clang.
Change-Id: Ie9356a2bc0f5b77e934cc16482d6ccb1961195dc
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80730
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
GCC 12 incorrectly warns about an array out of bounds issue:
```
$ make V=1 # emulation/qemu-i440fx
[…]
CC ramstage/arch/x86/ebda.o
x86_64-linux-gnu-gcc-12 -MMD -Isrc -Isrc/include -Isrc/commonlib/include -Isrc/commonlib/bsd/include -Ibuild -I3rdparty/vboot/firmware/include -include src/include/kconfig.h -include src/include/rules.h -include src/commonlib/bsd/include/commonlib/bsd/compiler.h -I3rdparty -D__BUILD_DIR__=\"build\" -Isrc/arch/x86/include -D__ARCH_x86_32__ -pipe -g -nostdinc -std=gnu11 -nostdlib -Wall -Wundef -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wno-trigraphs -Wimplicit-fallthrough -Wshadow -Wdate-time -Wtype-limits -Wvla -Wdangling-else -fno-common -ffreestanding -fno-builtin -fomit-frame-pointer -fstrict-aliasing -ffunction-sections -fdata-sections -fno-pie -Wno-packed-not-aligned -fconserve-stack -Wnull-dereference -Wreturn-type -Wlogical-op -Wduplicated-cond -Wno-unused-but-set-variable -Werror -Os -Wno-address-of-packed-member -m32 -Wl,-b,elf32-i386 -Wl,-melf_i386 -m32 -fuse-ld=bfd -fno-stack-protector -Wl,--build-id=none -fno-delete-null-pointer-checks -Wlogical-op -march=i686 -mno-mmx -MT build/ramstage/arch/x86/ebda.o -D__RAMSTAGE__ -c -o build/ramstage/arch/x86/ebda.o src/arch/x86/ebda.c
In file included from src/arch/x86/ebda.c:6:
In function 'write_ble8',
inlined from 'write_le8' at src/commonlib/include/commonlib/endian.h:155:2,
inlined from 'write_le16' at src/commonlib/include/commonlib/endian.h:178:2,
inlined from 'setup_ebda' at src/arch/x86/ebda.c:35:2,
inlined from 'setup_default_ebda' at src/arch/x86/ebda.c:48:2:
src/commonlib/include/commonlib/endian.h:27:26: error: array subscript 0 is outside array bounds of 'void[0]' [-Werror=array-bounds]
27 | *(uint8_t *)dest = val;
| ~~~~~~~~~~~~~~~~~^~~~~
[…]
```
[In GCC 12 the new parameter `min-pagesize` is added and defaults 4 kB.][1]
It treats INTEGER_CST addresses smaller than that as assumed results of
pointer arithmetics from NULL while addresses equal or larger than that
as expected user constant addresses. For GCC 13 we can represent results
from pointer arithmetics on NULL using &MEM[(void*)0 + offset] instead
of (void*)offset INTEGER_CSTs.
[1]: https://web.archive.org/web/20220711061810/https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99578
TEST=No compile error with gcc (Debian 12.2.0-3) 12.2.0
Change-Id: I6e36633f42cb4dc5af53212c10c919a86e451ee0
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62830
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
gcc12+ will require riscv architecture selection to come not only with
featurei suffixd charactersa, it also comes with feature_ful suffix_ed
words_mith. Much creative, very appreciate.
To accommodate for this madness, enable the already existing (but off by
default) support for that in our gcc11 build, support using by detecting
the compiler's behavior in xcompile and pass that knowledge along to our
build system.
Then cross our fingers and hope for the best!
Change-Id: I5dfeed766626e78d4f8378d9d857b7a4d61510fd
Signed-off-by: Patrick Georgi <patrick@coreboot.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67457
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
When payloads analyze the coverage using gcov (or lcov), the gcov
version must match the CC version. Otherwise gcov would fail to parse
the .gcno files.
Therefore, define GCOV_${TARCH} in xcompile, so that payloads don't need
to do tedious string manipulations to find the right gcov path.
Change-Id: If2fc329810c463a3d2c56deaf4e4a3fc3c0a3ed9
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65840
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Patrick Georgi <patrick@coreboot.org>
Clang has a limit for the number of nested brackets in CPP.
For soc/intel/common/block/include/intelblocks this is a problem as it
largely exceeds the default limit of 256.
Change-Id: I93038f918e07f735394fc495a8ed7371cc5b1569
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62175
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
When looking for C compilers, xcompile uses the "" prefix to "gcc" and
"clang" as a last-resort option. This fails in environments where such
default names are blocked to prevent "unclean" builds - such as Chrome
OS.
Allow overriding this prefix using the GENERIC_COMPILER_PREFIX variable
that is hopefully both descriptive enough to suggest what it is for and
unusual enough to not trigger by chance.
Change-Id: I16239f66730f1dbcb7482f223cea4ee5957af10c
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56643
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
This patch fixes the build with an external (coreboot) toolchain. When
the toolchain is not under util/crossgcc/xgcc, setting XGCCPATH to
/path/to/toolchain results in the error:
toolchain.inc:169: The coreboot toolchain version of iasl '<date>' was
not found
The reason is that the xcompile script incorrectly assumes XGCCPATH to
have a trailing slash.
Change-Id: Ifcc4bd2b081fa3603420dc0a8cab3b47967ebc65
Signed-off-by: Michele Guerini Rocco <rnhmjoj@inventati.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48937
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
If there's a host compiler in XGCCPATH, it's likely the same
relatively-current version we use for coreboot, and it's a well-known
quantity, so let's prefer that over alternatives by default.
In addition, look for the C++ host compiler as well.
Change-Id: If50341df169a476899b5a5ffd4c4fb6d21c3f4ac
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43144
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Stefan thinks they don't add value.
Command used:
sed -i -e '/file is part of /d' $(git grep "file is part of " |egrep ":( */\*.*\*/\$|#|;#|-- | *\* )" | cut -d: -f1 |grep -v crossgcc |grep -v gcov | grep -v /elf.h |grep -v nvramtool)
The exceptions are for:
- crossgcc (patch file)
- gcov (imported from gcc)
- elf.h (imported from GNU's libc)
- nvramtool (more complicated header)
The removed lines are:
- fmt.Fprintln(f, "/* This file is part of the coreboot project. */")
-# This file is part of a set of unofficial pre-commit hooks available
-/* This file is part of coreboot */
-# This file is part of msrtool.
-/* This file is part of msrtool. */
- * This file is part of ncurses, designed to be appended after curses.h.in
-/* This file is part of pgtblgen. */
- * This file is part of the coreboot project.
- /* This file is part of the coreboot project. */
-# This file is part of the coreboot project.
-# This file is part of the coreboot project.
-## This file is part of the coreboot project.
--- This file is part of the coreboot project.
-/* This file is part of the coreboot project */
-/* This file is part of the coreboot project. */
-;## This file is part of the coreboot project.
-# This file is part of the coreboot project. It originated in the
- * This file is part of the coreinfo project.
-## This file is part of the coreinfo project.
- * This file is part of the depthcharge project.
-/* This file is part of the depthcharge project. */
-/* This file is part of the ectool project. */
- * This file is part of the GNU C Library.
- * This file is part of the libpayload project.
-## This file is part of the libpayload project.
-/* This file is part of the Linux kernel. */
-## This file is part of the superiotool project.
-/* This file is part of the superiotool project */
-/* This file is part of uio_usbdebug */
Change-Id: I82d872b3b337388c93d5f5bf704e9ee9e53ab3a9
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41194
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Split common flags that are not specific to the C language out of
$CFLAGS_GCC into $FLAGS_GCC. This way, we can test for C specific
flags, too, without adding them to $ADAFLAGS_*. Currently this is
done for `-Wno-address-of-packed-member` which only applies to C.
Change-Id: Ib793c62656efb07b6e5b3385f1ed1c96a40efd1d
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39633
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Arthur Heymans
Nico Huber
Felix Singer
Elyes Haouas
Felix Held
Paul Menzel
Patrick Georgi
Yu-Ping Wu
Patrick Georgi
rnhmjoj
Patrick Rudolph