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package/boinc: fix build with autoconf >= 2.70

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Fix the following build failure raised since bump of autoconf to version
2.71 in commit ecd54b65c1 and
http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commit;h=ec90049dfcf4538750e61d675d885157fa5ca7f8:

checking for /home/buildroot/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc options needed to detect all undeclared functions... cannot detect
configure: error: in `/home/buildroot/autobuild/instance-0/output-1/build/boinc-7.16.18':
configure: error: cannot make /home/buildroot/autobuild/instance-0/output-1/host/bin/mips-linux-gnu-gcc report undeclared builtins

This error raised because AC_CHECK_DECLS returns an error due to -mavx
flag:

mips-linux-gnu-gcc: error: unrecognized command line option '-mavx'

To fix this build failure, hard code ac_cv_c_undeclared_builtin_options
to 'none needed' as removing '-mavx' from CPPFLAGS will hinder the
detection of xgetbv, xgetbv, __xgetbv, cpuid, _cpuid and __cpuid

Fixes:
 - http://autobuild.buildroot.org/results/4b468a5d3bfbff9638316ca930ef791867774aef

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Fabrice Fontaine 2021-10-07 18:41:12 +02:00 committed by Thomas Petazzoni
parent 23a2ff949e
commit be5e0230c6
1 changed files with 9 additions and 1 deletions
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10
package/boinc/boinc.mk
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@ -14,7 +14,15 @@ BOINC_CPE_ID_VENDOR = rom_walton
BOINC_SELINUX_MODULES = boinc
BOINC_DEPENDENCIES = host-pkgconf libcurl openssl
BOINC_AUTORECONF = YES
BOINC_CONF_ENV = ac_cv_path__libcurl_config=$(STAGING_DIR)/usr/bin/curl-config
# The ac_cv_c_undeclared_builtin_options value is to help
# AC_CHECK_DECLS realize that it doesn't need any particular compiler
# option to get an error when building a program that uses undeclared
# symbols. Otherwise, AC_CHECK_DECLS is confused by the configure
# script unconditionally passing -mavx, which only exists on x86, and
# therefore causes a failure on all other architectures.
BOINC_CONF_ENV = \
ac_cv_c_undeclared_builtin_options='none needed' \
ac_cv_path__libcurl_config=$(STAGING_DIR)/usr/bin/curl-config
BOINC_CONF_OPTS = \
--disable-apps \
--disable-boinczip \