![Bernd Kuhls](/assets/img/avatar_default.png)
The gnutils code uses __attribute__((constructor)) and
__attribute__((destructor)) to call constructor/desctructor when a
shared library is loaded.
Constructor/desctructor are not used when a static library is used
(except when if -Wl,--whole-archive -lgnutls -Wno-whole-archive is
used, not tested).
Even if gnutls initialization (_gnutls_global_init()) may be
called manually, the gnutls maintainer said it's not supported [1].
"Note that static linking applications with gnutls is not something
supported. gnutls relies on library constructors and destructors
which are not loaded when linking statically."
Now the gnutls script warns about static linking [2].
So disable gnutls statically by adding "depends on !BR2_STATIC_LIBS"
at Kconfig level and --disable-static in GNUTLS_CONF_OPTS.
Fixes:
[taskd] http://autobuild.buildroot.net/results/c2d/c2dd5c1c9dc87d2943c15e58ee56e67d7375368c
[ffmpeg] http://autobuild.buildroot.net/results/892/8926d319d6d1cd1ee72239ad7d9ca869d2355628
[sngrep] http://autobuild.buildroot.net/results/f7f/f7fb42d3742f6f01000a0d181e0c785640284405
[1] https://gitlab.com/gnutls/gnutls/issues/203
[2] 6b74888679
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
[Romain: merge our two patches together
add some option comment
disable static libgnutls.a
add sngrep autobuilder reference]
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Tested-by: Bernd Kuhls <bernd.kuhls@t-online.de>
[Thomas: do not disable libgnutls.a]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
29 lines
771 B
Plaintext
29 lines
771 B
Plaintext
config BR2_PACKAGE_GNUTLS
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bool "gnutls"
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# https://gitlab.com/gnutls/gnutls/issues/203
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depends on !BR2_STATIC_LIBS
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depends on BR2_USE_WCHAR
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select BR2_PACKAGE_LIBTASN1
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select BR2_PACKAGE_LIBUNISTRING
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select BR2_PACKAGE_NETTLE
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select BR2_PACKAGE_PCRE
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help
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GnuTLS is a secure communications library implementing the SSL
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and TLS protocols and technologies around them.
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http://www.gnutls.org
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if BR2_PACKAGE_GNUTLS
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config BR2_PACKAGE_GNUTLS_TOOLS
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bool "install tools"
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select BR2_PACKAGE_ARGP_STANDALONE \
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if BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_MUSL
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help
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Install GnuTLS command line tools for various cryptographic tasks.
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endif
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comment "gnutls needs a toolchain w/ wchar, dynamic library"
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depends on !BR2_USE_WCHAR || BR2_STATIC_LIBS
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