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If the Linux kernel has CONFIG_WERROR enabled, and openafs is configured
with --disable-checking, the libafs kernel module fails to build:
/src/libafs/MODLOAD-5.14.0-305.el9.x86_64-MP/evp.c:501:9:
error: cast between incompatible function types from
‘void (*)(void *)’ to ‘int (*)(EVP_MD_CTX *)’ {aka
‘int (*)(struct hc_EVP_MD_CTX *)’} [-Werror=cast-function-type]
501 | (hc_evp_md_init)null_Init,
| ^
The openafs commit:
Linux-5.17: Kernel build uses -Wcast-function-type (6bdfa97673)
fixed above error when the Linux kernel has CONFIG_WERROR enabled and
openafs is configured with --enable-checking. But we will still fail
when CONFIG_WERROR is enabled and openafs is configured with
--disable-checking (which is the default).
Update osconf.m4 to always set CFLAGS_NOCAST_FUNCTION_TYPE, so that it
can be used to avoid the above compiler check even when checking is
disabled.
NOTE: The only use of CFLAGS_NOCAST_FUNCTION_TYPE is to correct the
warnings flagged in external/heimdal/hcrypto/evp.c and evp-algs.c.
NOTE: --enable-checking=all can be used to bypass setting the define.
Reviewed-on: https://gerrit.openafs.org/15417
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
(cherry picked from commit 2357ac6ae59ad1908b14b5e76e5931c7071ee9a2)
Change-Id: I96ccf89a7316449a0492d08dbfc0e625e143d933
Reviewed-on: https://gerrit.openafs.org/15507
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
AFS is a distributed file system that enables users to share and access all of the files stored in a network of computers as easily as they access the files stored on their local machines. The file system is called distributed for this exact reason: files can reside on many different machines, but are available to users on every machine. OpenAFS 1.0 was originally released by IBM under the terms of the IBM Public License 1.0 (IPL10). For details on IPL10 see the LICENSE file in this directory. The current OpenAFS distribution is licensed under a combination of the IPL10 and many other licenses as granted by the relevant copyright holders. The LICENSE file in this directory contains more details, thought it is not a comprehensive statement. See INSTALL for information about building and installing OpenAFS on various platforms. See CODING for developer information and guidelines. See NEWS for recent changes to OpenAFS.