path: root/meta/recipes-support
diff options
authorAndré Draszik <>2017-09-04 10:42:44 +0100
committerRichard Purdie <>2017-09-05 14:58:36 +0100
commit41f1e44fce976c4140cda62a41349e91e69d04ef (patch)
treef3554b8f89138faa1667105686e8c491d8080ff9 /meta/recipes-support
parentdd75644db2f662f0d88529a068bbfb599c9790a9 (diff)
curl: enable threaded resolver
Multi-threaded applications using libcurl crash on DNS timeouts when built using OE. The reason is as follows: By default, libcurl implements DNS timeouts using a timer (alarm()) and a pair of setjmp()/longjmp(). This approach is unsafe in multi-threaded applications for various reasons, as e.g. explained in the relevant man-pages. To avoid this, libcurl can be compiled with a built-in threaded resolver, or against the c-ares asynchronous resolver library. To keep extra dependencies to a minimum, and to mimic other distributions (debian at least), and because c-ares is not available in OE-core, add a PACKAGECONFIG to be able to enable use of of the built-in threaded resolver and enable it by default. Signed-off-by: André Draszik <> Signed-off-by: Richard Purdie <>
Diffstat (limited to 'meta/recipes-support')
1 files changed, 4 insertions, 3 deletions
diff --git a/meta/recipes-support/curl/ b/meta/recipes-support/curl/
index f42582a9f0..5c8072fc65 100644
--- a/meta/recipes-support/curl/
+++ b/meta/recipes-support/curl/
@@ -20,9 +20,9 @@ SRC_URI[sha256sum] = "fdfc4df2d001ee0c44ec071186e770046249263c491fcae48df0e1a3ca
CVE_PRODUCT = "libcurl"
inherit autotools pkgconfig binconfig multilib_header
-PACKAGECONFIG ??= "${@bb.utils.filter('DISTRO_FEATURES', 'ipv6', d)} gnutls proxy zlib"
-PACKAGECONFIG_class-native = "ipv6 proxy ssl zlib"
-PACKAGECONFIG_class-nativesdk = "ipv6 proxy ssl zlib"
+PACKAGECONFIG ??= "${@bb.utils.filter('DISTRO_FEATURES', 'ipv6', d)} gnutls proxy threaded-resolver zlib"
+PACKAGECONFIG_class-native = "ipv6 proxy ssl threaded-resolver zlib"
+PACKAGECONFIG_class-nativesdk = "ipv6 proxy ssl threaded-resolver zlib"
PACKAGECONFIG[dict] = "--enable-dict,--disable-dict,"
PACKAGECONFIG[gnutls] = "--with-gnutls,--without-gnutls,gnutls"
@@ -42,6 +42,7 @@ PACKAGECONFIG[smtp] = "--enable-smtp,--disable-smtp,"
PACKAGECONFIG[ssl] = "--with-ssl --with-random=/dev/urandom,--without-ssl,openssl"
PACKAGECONFIG[telnet] = "--enable-telnet,--disable-telnet,"
PACKAGECONFIG[tftp] = "--enable-tftp,--disable-tftp,"
+PACKAGECONFIG[threaded-resolver] = "--enable-threaded-resolver,--disable-threaded-resolver"
PACKAGECONFIG[zlib] = "--with-zlib=${STAGING_LIBDIR}/../,--without-zlib,zlib"
PACKAGECONFIG[krb5] = "--with-gssapi,--without-gssapi,krb5"