![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>
22 lines
614 B
Plaintext
22 lines
614 B
Plaintext
config BR2_PACKAGE_VPNC
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bool "vpnc"
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depends on BR2_PACKAGE_LIBGPG_ERROR_ARCH_SUPPORTS # libgcrypt
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depends on !BR2_STATIC_LIBS # gnutls
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depends on BR2_USE_MMU # fork()
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depends on BR2_USE_WCHAR # gnutls
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select BR2_PACKAGE_LIBGCRYPT
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select BR2_PACKAGE_LIBGPG_ERROR
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select BR2_PACKAGE_GNUTLS
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help
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Client for Cisco VPN concentrator
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3000 Series VPN Concentrator
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IOS Routers
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PIX/ASA Zecurity Appliances
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Juniper/Netscreen
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http://www.unix-ag.uni-kl.de/~massar/vpnc
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comment "vpnc needs a toolchain w/ wchar, dynamic library"
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depends on BR2_USE_MMU
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depends on !BR2_USE_WCHAR || BR2_STATIC_LIBS
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