gnutls: explicitly set --with-librt-prefix

* it will try to link with librt from host and if you have it on host (libc6-dev-i386 in ubuntu)
  it fails with:
  /usr/lib32/librt.so: error: undefined reference to '__clock_settime', version 'GLIBC_PRIVATE'
  /usr/lib32/librt.so: error: undefined reference to '__clock_getcpuclockid', version 'GLIBC_PRIVATE'
  /usr/lib32/librt.so: error: undefined reference to '__clock_getres', version 'GLIBC_PRIVATE'
  /usr/lib32/librt.so: error: undefined reference to '__clock_nanosleep', version 'GLIBC_PRIVATE'
  collect2: error: ld returned 1 exit status

  in older 3.6.14 it was using /usr/lib32/librt.so from host as well, but without do_compile
  failing

  configure:17539: checking for librt
  configure:17563: i686-oe-linux-gcc  -m32 -march=core2 -mtune=core2 -msse3 -mfpmath=sse -fstack-protector-strong  -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security -Werror=return-type --sysroot=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.14-r0/recipe-sysroot -o conftest  -O2 -pipe -g -feliminate-unused-debug-types -fmacro-prefix-map=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.14-r0=/usr/src/debug/gnutls/3.6.14-r0                      -fdebug-prefix-map=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.14-r0=/usr/src/debug/gnutls/3.6.14-r0                      -fdebug-prefix-map=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.14-r0/recipe-sysroot=                      -fdebug-prefix-map=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.14-r0/recipe-sysroot-native=    -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-z,relro,-z,now conftest.c /usr/lib32/librt.so  >&5
  configure:17563: $? = 0
  configure:17573: result: yes
  configure:17580: checking how to link with librt
  configure:17582: result: /usr/lib32/librt.so

  with --with-librt-prefix passed, it finds the right one as shown in build/config.log:

  configure:17551: checking for librt
  configure:17575: i686-oe-linux-gcc  -m32 -march=core2 -mtune=core2 -msse3 -mfpmath=sse -fstack-protector-strong  -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security -Werror=return-type --sysroot=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.15-r0/recipe-sysroot -o conftest  -O2 -pipe -g -feliminate-unused-debug-types -fmacro-prefix-map=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.15-r0=/usr/src/debug/gnutls/3.6.15-r0                      -fdebug-prefix-map=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.15-r0=/usr/src/debug/gnutls/3.6.15-r0                      -fdebug-prefix-map=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.15-r0/recipe-sysroot=                      -fdebug-prefix-map=/tmpdir/work/qemux86-oe-linux/gnutls/3.6.15-r0/recipe-sysroot-native=   -I/tmpdir/work/qemux86-oe-linux/gnutls/3.6.15-r0/recipe-sysroot/usr/include -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-z,relro,-z,now conftest.c /tmpdir/work/qemux86-oe-linux/gnutls/3.6.15-r0/recipe-sysroot/usr/lib/librt.so  >&5
  configure:17575: $? = 0
  configure:17585: result: yes
  configure:17592: checking how to link with librt
  configure:17594: result: /tmpdir/work/qemux86-oe-linux/gnutls/3.6.15-r0/recipe-sysroot/usr/lib/librt.so

(From OE-Core rev: d355cd38904460f3add2b0b9477e8ddfd42b22e1)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/recipes-support/gnutls/gnutls_3.6.15.bb b/meta/recipes-support/gnutls/gnutls_3.6.15.bb
index 71118bd389..b936db50d1 100644
--- a/meta/recipes-support/gnutls/gnutls_3.6.15.bb
+++ b/meta/recipes-support/gnutls/gnutls_3.6.15.bb
@@ -43,6 +43,7 @@ EXTRA_OECONF = " \
     --enable-local-libopts \
     --enable-openssl-compatibility \
     --with-libpthread-prefix=${STAGING_DIR_HOST}${prefix} \
+    --with-librt-prefix=${STAGING_DIR_HOST}${prefix} \
     --with-default-trust-store-file=${sysconfdir}/ssl/certs/ca-certificates.crt \
 "