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William rightfully reported that not supporting =0 to disable a USE_xxx
option is sometimes painful (e.g. a script might do USE_xxx=$(command)).
It's not that difficult to handle actually, we just need to consider the
value 0 as empty at the few places that test for an empty string in
options.mk, and in each "ifneq" test in the main Makefile, so let's do
that. We even take care of preserving the original value in the build
options string so that building with USE_OPENSSL=0 will be reported
as-is in haproxy -vv, and with "-OPENSSL" in the feature list.
This adds a new option for the Makefile USE_OPENSSL_AWSLC, and
update the documentation with instructions to use HAProxy with
AWS-LC.
Update the type of the OCSP callback retrieved with
SSL_CTX_get_tlsext_status_cb with the actual type for
libcrypto versions greater than 1.0.2. This doesn't affect
OpenSSL which casts the callback to void* in SSL_CTX_ctrl.
Let's make clear which commands goes into the wolfSSL directory and
which one in the haproxy directory. Also, let's add a paragraph in the
QUIC section explaining how to proceed with wolfSSL.
In the errors and warnings section about common issues, it's useful to
mention the strict-aliasing warning that was happening with gcc-4.4 that
may still be found on old systems, especially since it will probably take
ages to build there and the warning is harmless.
Gcc 13 is known to work, OpenSSL 3.1 and wolfSSL as well. Add a few
hints about build errors when using QUIC + OpenSSL and warnings about
the dramatic OpenSSL 3.x performance regression.
OpenSSL 3.0 is now supported but was not mentioned. Also, it was
found that OpenSSL 0.9.8 doesn't build anymore since 2.5 due to
some of the functions used in the JWT token processing, and since
nobody complained, it seems it's not worth fixing it so support for
it was removed.
It turns out that gcc-3.4 doesn't build anymore (and it has probably been
the case since 2.4 or so). gcc-4.2 does build fine though, let's mark it
as the oldest supported one. Now that gcc-12 works, also update the most
recently known-to-work version.
SSL engines used to be built by default for a long time but they're now
disabled consecutive to the API change that makes OpenSSL 3.0 spew plenty
of warnings. Support may still be enabled by passing USE_ENGINE=1.
This enumerates a few of the options that are expected to have an effect
on the process' self-checks at the expense of more or less performance,
and how to choose sets of options for different deployments.
With a single process, we don't need to USE_PRIVATE_CACHE, USE_FUTEX
nor USE_PTHREAD_PSHARED anymore. Let's only keep the basic spinlock
to lock between threads.
This adds the following CPUs to the makefile:
- armv81 : modern ARM cores (Cortex A55/A75/A76/A78/X1, Neoverse, Graviton2)
- a72 : ARM Cortex-A72 or A73 (e.g. RPi4, Odroid N2, VIM3, AWS Graviton)
- a53 : ARM Cortex-A53 or any of its successors in 64-bit mode (e.g. RPi3)
- armv8-auto: both older and newer ARMv8 cores, with a minor runtime penalty
The reasons for these ones are:
- a53 is the common denominator of all of its successors, and does
support CRC32 which is used by the gzip compression, that the generic
armv8-a does not ;
- a72 supports the same features but is an out-of-order one that deserves
better optimizations; it's found in a number of high-performance
multi-core CPUs mainly oriented towards I/O and network processing
(Armada 8040, NXP LX2160A, AWS Graviton), and more recently the
Raspberry Pi 4. The A73 found in VIM3 and Odroid-N2 can use the same
optimizations ;
- armv81 is for generic ARMv8.1-A and above, automatically enables LSE
atomics which are way more scalable, and CRC32. This one covers modern
ARMv8 cores such as Cortex A55/A75/A76/A77/A78/X1 and the Neoverse
family such as found in AWS's Graviton2. The LSE instructions are
essential for large numbers of cores (8 and above).
- armv8-auto dynamically enables support for LSE extensions when
detected while still being compatible with older cores. There is a
small performance penalty in doing this (~3%) but a same executable
will perform optimally on a wider range of hardware. This should be
the best option for distros. It requires gcc-10 or gcc-9.4 and above.
When no CPU is specified, GCC version 10.2 and above will automatically
implement the wrapper used to detect the LSE extensions.
Now that SLZ is merged, let's update the makefile and compression
files to use it. As a result, SLZ_INC and SLZ_LIB are neither defined
nor used anymore.
USE_SLZ is enabled by default ("USE_SLZ=default") and can be disabled
by passing "USE_SLZ=" or by enabling USE_ZLIB=1.
The doc was updated to reflect the changes.
Solaris 9 (released 2002) added support for closefrom().
I bumped the version in the comment to 10 as the default feature
flags already has event ports enabled which were introduced in
Solaris 10.
