busses/pci/x86: add
Other add-ons are in following commits.
Change-Id: I7a77bfaef0e8995917b4b54c8369d7075533ec26
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6220
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
* Assists on early boot platforms to install / upgrade when
no network is available.
* Doesn't introduce any additional dependencies
* Creates shine-though directories too.
Change-Id: I11dd207b2ffbae1768bab7a118a51034df238878
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6185
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Tested-by: Automation <automation@haiku-os.org>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
We shouldn't be doing these crazy things.
The only usage of this is the NextID rule which computes an unique
number by incrementing a variable. This is used for example to generate
names for the extra files used in xattr emulation.
But we certainly don't need multiplication, division, etc. That's better
done in scripts (Python, for example) in rule actions. So keep just
enough of this for NextID to work, and we could probably make it even
simpler.
Change-Id: Id06d4f5e236205203fe8d604de440753b63801bc
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6088
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Reviewed-by: waddlesplash <waddlesplash@gmail.com>
* We depend on FDT passed to the bootloader now
from EFI or u-boot via fdt_addr_r now
* We leave an fdt path within the boot partition
(for now) to allow / encourage users to optionally
plug in their own DTB's for troubleshooting. (only
on u-boot loader)
Change-Id: I3f2d81b60d46f388f333d5caa27aa77e6e36447d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6081
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: X512 <danger_mail@list.ru>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Tested-by: Automation <automation@haiku-os.org>
Define a dedicated OnDiskData structure for each on-disk structure. This
must match the on-disk layout, except for endianness, which is handled
by _SwapEndian methods. These structure are "plain old data" so we can
use offsetof on them. They are wrapped in an easier to use C++ API.
This resolves a lot of problems with the previous code: warnings caused
by the use of offsetof as well as a much simpler instanciation of the
objects from on-disk data.
Also fixed another problem with UUIDs, where the UUIDs were handled by
pointers in a lot of place where it was not necessary. Use references
instead. The V4 structures which don't have an UUID will return a "null"
(zero-filled) one.
Change-Id: Ifb2bf6ab94906ca50410dd3446d3566615392ca2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6021
Reviewed-by: Raghav Sharma <raghavself28@gmail.com>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
It was used only for playing CDs via SCSI commands, which is what
CDPlayer also did; but this is not really much supported anymore,
so CDPlayer was removed years ago, and now this is too.
Its source code lives on at HaikuArchives.
Fixes #18236.
the type lists are hardcoded for now.
Change-Id: Iae89046ee52d3812354de619bfd9625217479c49
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5597
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
This will allow proper operation of POSIX SHM API (shm_open etc.).
Now memory files are stored fully in memory and do not affect disk
storage (except swap if enabled).
Change-Id: Iae3ce1afa968df72e82198e598a273cbf7cb0269
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5802
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Previously it was spread all around the tree, and was not defined
consistently for all boot objects (there were a number of boot modules
which did not define it, but did include headers which checked for it.)
Now, as it is handled in SetupBoot which is invoked for all boot objects,
it will be applied consistently throughout. We can thus drop the manual
additions of it from all Jamfiles.
the entropy source is read every second and pushed to the PRNG.
the PCI device is tested, not the ACPI.
Change-Id: I9bb6b21c7189b28a1d8a624d83b33ff6682152dc
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5825
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
tested on Zen2 (Ryzen 3 5300U)
This support was submitted in October for inclusion in Linux.
Haiku supports only two profiles. We could probably add some more, and let the driver says which it supports.
Change-Id: Id7754b445bc32a691d58a1e4af630351562abc22
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5826
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
* The if statements now "make sense"
* 1.4 GiB release images easily fit a "mini single layer DVD"
* Our source build is around 1.1GiB
* 200 MiB of "space" in our read-only image allows
a little room for live-media shenanigans
* Empty space is compressed anyway in release zip files
Change-Id: I5ad017e3f80d5977ca9604f5bf200684796fc7b9
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5818
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Change-Id: Ib21a3fb8c26a25d84b0b3dd298c22618a53cb7d1
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5817
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: Niels Sascha Reedijk <niels.reedijk@gmail.com>
They are now created from a separate repository and via HaikuPorts.
Since the HaikuPorts packages are not yet in the BuildPackageRepository,
the actual section that adds the packages is commented out (but it only
runs for release-* targets anyway.)
The "welcome", "userguide", and "quicktour" scripts, which are symlinked
from the desktop in release builds, are added to the Haiku package's
"regular" profile instead (they do not actually require the other packages
to be installed but will detect if they are not and launch the online
versions instead.)
Building EFI partition for 32-bit anyboot ISO image was disabled
in hrev52443 to fix issue #14656.
As haiku_loader.efi is now available for the x86 architecture
since hrev55917, we can re-enable building EFI system partition
for the 32-bit ISO.
We can also remove the build rules related to HAIKU_ANYBOOT_LEGACY
as it is not used any more.
Change-Id: I9c2c272bcd0f9c1a98ee6cea300374dc26b4818d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5716
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
* "egrep: warning: egrep is obsolescent; using grep -E"
* egrep on haiku is a shell script calling grep -E
* given the warnings in the latest egrep, lets get
ahead of the curve and migrate to grep -E
Change-Id: I0fc2b936c7a9c52f87caf97d8e9ac42516fee014
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5718
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
...as was already added to the regular (userland) StaticLibrary some
time ago. Shaves off double-digit percentages of the file size of
e.g. FreeBSD and OpenBSD network drivers.
compiler generates a warning regarding using offsetof() function on a non - POD type class
disabling Werror will not break build due to this warning
Change-Id: Ic72210f92a257e80ad8de9327892cfca7454076e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5538
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
Newer versions of u-boot support EFI natively, which is what we
have been making use of instead.
There may be some use for the "native" u-boot loader still on PowerPC,
but otherwise the EFI support is much more advanced and even in u-boot
supports as or more features than "native" loaders, so there is no
reason to keep this around.
* Nothing uses the plural forms anymore, so drop them.
* Nothing uses the "PACKAGE" field, so drop it.
Once the Marvell driver is migrated to use a package instead of the
archive, we can drop even more of this related to HAIKU_WIFI_FIRMWARE_DO_EXTRACT.
The WiFi firmware rules are only needed for a few very old drivers.
Any devices we are going to bootstrap on will use one of the wifi_firmwares
packages instead.
Recently we introduced Spleen as a larger font for KDL for high
resolution displays. However, it looks quite different from our original
font. I designed an enlarged version of our original font (designed by
Brian J. Swetland and also found in NewOS, LK and Fuchsia) to use
instead.
Change-Id: I10872e407d45b906f8b6c7ba44b2f993dcd19bff
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5382
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
* Use with --sysroot /path/to/sysroot; useful for CI
environments and cross-building.
Change-Id: I27a93a5d209cd5324591587e85fce9b47c18172d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5318
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
These were output to the root of the generated directory. There should
be nothing there except the final Haiku image.
Fixes #16750.
Change-Id: I132de939c70197c3f7cc306ac371965a0b7f38b3
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5346
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
* This is a temporary workaround for #17468. Using the older
riscv64 icu-57 package (compiled with gcc 8.x) removes
the userspace hang on startup of Haiku.
* Thanks to X512 for the workaround.
* icu66, icu70 compiled with gcc 11.2.0 exhibits the
userspace hang at startup.
* We have a lot of bootstrap work to do, and this gives us
a riscv64 image which boots for testing + building software
in a native environment.
Change-Id: I503a1e99ff38450628c0863100450c883139a25a
This patch will fix almost all warnings we have in xfs code.
There are some which I haven't fixed yet, I added comments on
part of code which is giving error and its type as well.
I tested all the changes on xfs_shell and everything is
working fine.
Change-Id: I1af1d09e7eab7f2c2397193bd5a584c5d40c424c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5257
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Based on usb_ecm and other native USB ethernet drivers which share a
similar structure.
References used to implement this:
- FreeBSD urndis driver
- [MS-RNDIS].pdf v20140501
- Microsoft list of RNDIS OIDs
TODO:
- Better handling of "request id" field to make sure the replies we get
match up with the requests we sent, and it could allow to have
multiple requests in flight. However, the FreeBSD driver doesn't
bother to implement this, if you only ever have one request in flight
and wait for a reply before sending another, this isn't really needed.
- Endian safety, this code will only work on little endian systems for
now. Several structures sent/received to/from the device must be little
endian, so on big endian platforms a lot of byteswapping will be needed,
or the code rewritten to use some smarter object and not a plain
struct for all of these.
- Investigate if it's possible to send/receive multiple ethernet frames
in a single USB transaction for better performance. Our driver
structure doesn't really allow for it unless the driver implements
some buffering on its own.
Change-Id: I2c6dacf0c1aeb6c7c1c112e9b16a63e586ea979a
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5281
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
-tar fs buffer upgraded to 9Mb
-adding some kernel addons
With this settings i was able to fully boot a gcc2hybrid.
The x86_64 started up to the rocket, but could'nt go into Tracker.
Change-Id: I8f9e1f803f4a918419305bce3068ffce027d2548
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5295
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
It doesn't seem to work anymore, and it doesn't look to be particularly
maintained on FreeBSD's side of things. I think kallisti5 was the only
person who ever even attempted to use it.
- All servers are now Werror
- All bus_managers are now Werror
- All input_server add-ons are now Werror
- Some more things in bin/ are Werror
Only tested on x86_64, I'll let the buildbot test on x86_gcc2 and RISC-V
Change-Id: I5ec86512eac729c862828a45d8431f85c4ec422b
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5226
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
This makes it a little simpler to build FUSE software with userlandfs.
Change-Id: I2a7e5494b7dc8db01e4c150de3fcdb99506ce119
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5197
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
It depends on config_manager and was still part of x86 build
Change-Id: I88680bfc5adb5cf3d6d55f514c1f193bffea3963
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5219
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
* The private keys are in possession of Haiku, Inc.
Change-Id: I3b5b004e1dce0102f8a65f6d682f7e428845efe8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4936
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Change-Id: If7feffafea4fc6d295d04f696127c8f0fbd8fb9d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4704
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
The use of the "register" keyword is harmless, though we should eventually
remove it.
Taking addresses of packed members is "mostly harmless" on x86 where
unaligned accesses are OK. It's less harmless on other architectures,
but we sometimes use packed structures when manually aligning things.
Unfortunately GCC throws this warning even when the actual pointer would
be aligned, not merely when it's unaligned, making the warning far too
noisy and not really that useful.
"Found" by GCC 11.
This is one more change to prepare for the transition to soft-float for the ARM EFI bootloader.
We need this change to remove the kernel compiler flags from .S files for the bootloader. Otherwise there would be hard-float and soft-float flags at the same time, giving a compile error.
Change-Id: I0b66c3c16937228eb76351e359160187d3ab826b
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4690
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
* Move assets to new boot directory
* -hfsplus not valid anymore on cdrtools 3.02
* Throw down some forth I saw in an *old* fedora 12
chrp script. If we ever target ppc64 it might be
handy someday. The text output also lets you know
the cd booted successfully.
Change-Id: I169d887fe8373de1719b98305d01b714f6f6bcbe
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4681
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>
libtermcap was deprecated in favor of terminfo in 2013; the library was
removed then, and this file was only left because not all optional
packages had yet been rebuilt against ncurses. Well, that has now
long been completed, and indeed all applications continue to function
even after removing /etc/termcap.
In case any legacy applications that I have missed still do need it,
it should be provided by HaikuPorts and not Haiku itself.
On Sparc Openboot, we get allocated a stack of only 8 kilobytes, and
each called function costs at least 176 bytes for the stack frame.
This means we need to be more careful than usual about stack usage. Move
some large-ish allocations off the stack by either making them static,
or allocated dynamically.
Add a compiler flag to error on functions which use too much stack. The
threshold is at 1023 bytes, because that's what allowed me to find the
two functions that were causing a stack overflow (open_from and
_ParseActivatedPackagesFile)
Change-Id: Ia0d13a9247e1a3fff4ce654bdffd6edb16e7cbc7
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2371
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Most importantly include zstd, which is a new requirement for the
bootstrap build.
Change-Id: I981401e7d70fb7e1befaf7fc37f2fddc6d7e327d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4635
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
This is an internal ICU library, used by their command line tools only.
libbe (or anything in Haiku sources) does not need to link to it.
Change-Id: Id322572c6833c225d5501a7e9520dd3dc82934f8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4634
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
The other Atheros drivers are "atheros813x" and "atheroswifi",
so renaming this one (which is the oldest of the set) to match
the other two makes sense.
This reverts commit a0db7ef272.
This reverts commit 40cdf7d607.
This reverts commit 2ff22d6734.
This reverts commit b9eacd390d.
This partially reverts commit 5ae7ac5fd9.
This was all added in the run-up to the removal of the framebuffer driver,
or was added since then to enhance framebuffer-only support in that driver.
Change-Id: I32ab8199f22cf6846545ae19e943c98012b2a1d0
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4615
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
The bootloader is larger after adding zstd and needs more space now.
384 is the value used already on PPC and SPARC. Fixes generating
floppyboot archives for anyboot images following recent changes.
- All network add-ons are now built with Werror, collapse the list to a
single entry
- Add a few busses add-ons that were not listed (to be checked and fixed if
needed)
Add one missing include and change variable declaration types to match comparison type.
Part of #9460
Change-Id: I95a12e5db11f95c2fd7c1906eaabdc5e21236cf1
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4567
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Done as part of #9460
Warnings related to comparison of integer expressions of different signedness
Change-Id: If5543db951b11aab1858a18a057b7d2e08ee2b42
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4503
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
* Works a bit better with dark themes
* Has some interesting alternative design elements
* MIT licensed
Change-Id: I6cfd1d4d05016fb014d515d94cff3b8c8d0298b2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4508
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Only one code change: for some reason, GCC chokes on the cr3 functions
as macros (throwing errors about invalid registers.) The BSDs have them
as inline functions instead, so they are converted to that here.
Tested and working. There seems to be about a 10% decrease in CPU time
on some compilation benchmarks that I briefly tried.
Change-Id: I31666297394d7619f83fca6ff5f933ddd6f07420
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4515
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
On x86_64, the KERNEL_ARCH should really be "x86_64", but it was "x86"
as the architecture sources/headers directory is shared between 32 and 64 bit.
Should not be a functional change on any platform outside x86_64.
The static asserts are broken on GCC2 and so did not catch this. It appears
nobody has ever tried to use this structure on 32-bit plaforms in the upstream
libraries or SPDK/DPDK?
Fixes #15212.
Translators and media-plugins are the main source of dependencies in haiku.hpkg,
and thus the main source of packages being pulled into chroots, especially
HaikuPorter chroots. (FFmpeg pulls in a rather large array of sub-
dependencies, itself.) So, here we break all the translators into their
own sub-package.
For now, haiku.hpkg is declared to depend on haiku_datatranslators,
so that users will not suddenly update and have no translators.
In the future, this will be dropped.
Note that this is only done for the primary arch at present.
Secondary architecture translators remain in the main secondary package
for now.
Change-Id: Id0b352f34f7110b79ec7787792bf3ae0edab4054
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4477
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Part of #9460
Change-Id: Ibcc30af0c2d351742cbedd6df15b2880b92edfee
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4513
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Change-Id: I44211b3533f99338d7246e88593fc8838628904c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4485
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
This fix is for ticket #9460 to enable -Werror for ext2.
- Unused functions are removed.
- The ASSERT macro was redefining a different ASSERT macro from the included files. Now it gets undefined first.
- One comparison side was cast to ptrdiff_t because X86_gcc2 complained about signed/unsigned comparison
Change-Id: Ib0caade2f83de34c04acc0fc6aa5ed50712daec4
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4453
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
* This helps with creating a sysroot, otherwise extracted package
links refer to /system, which is outside of the sysroot.
* Should have no functional impact on Haiku, as these are already
symlinks
Change-Id: I29f719dc2c0839dd090e7f33eea0b8f98e0d6355
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4218
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Only on non-GCC2 for now, as GCC2 does not have -fvisibility.
An opt-out is left as a possibility, and is unfortunately necessary
for libshared and libicon, as these two are used even in WebKit instead
of linking to the .a. However, libcolumnlistview, libagg, and a whole
bunch of others are now no longer exported, so this is already a major
improvement on what symbols we were leaking.
This may provide performance differences for consumers of these APIs,
as GCC and the linker are now free to merge and directly use functions
that previously could have been semantically interposed. AGG usage in
app_server, especially, may benefit.
We can also now remove the addition from libnetservices, so do that.
That is, it will now pull in NEEDLIBS and LINKLIBS set by LinkAgainst
from static libraries also built by Jam. This allows specifying what
libraries other static libraries need only once (in most cases;
occasionally things are not evaluated in a sane order and then
this does not quite work.)
Use this for libnetservices.a, which needs libshared.a, so that
dependencies on it do not have to be declared within most in-tree
consumers of libnetservices (e.g. Package Kit, http_streamer, etc.)
It seems GCC has the same behavior as Clang now, so we can ignore
errors generated while preprocessing. (Previously we did anyway,
before the recent commit adding -e to JAMSHELL flags, so this
just continues previous behavior.)
