[Buildroot] [git commit branch/2018.02.x] cryptsetup: fix build with old host kernel headers

[Buildroot] [git commit branch/2018.02.x] cryptsetup: fix build with old host kernel headers

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=6ed746824500f76a4401f78514c41d3869a21664
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2018.02.x

By default cryptsetup configure fails when the if_alg.h kernel header is
not available. Kernels older than 2.6.38, like the one in RHEL 6 hosts,
do not provide this header. Since we don't need the kernel crypto
feature for host tools, just disable this feature to allow successful
completion of the configure script.

While at it, fix a typo in the --with-crypto_backend option (hyphen ->
underscore).

Should fix:
http://autobuild.buildroot.net/results/ffd/ffda2579b215b53161025b7bc703091cb30ef95d/
http://autobuild.buildroot.net/results/c48/c48015f76b13fec38f650f66824e7b986eb28572/
http://autobuild.buildroot.net/results/be6/be621f71bf9da8719bf7fc943eccc9b4dc2cc43e/

Cc: Martin Hicks <mort@bork.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit bef1786475a743bd2cf76484b5d6a3158c0d7bc5)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 package/cryptsetup/cryptsetup.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/cryptsetup/cryptsetup.mk b/package/cryptsetup/cryptsetup.mk
index d5ab022b77..d81aa7b341 100644
--- a/package/cryptsetup/cryptsetup.mk
+++ b/package/cryptsetup/cryptsetup.mk
@@ -36,7 +36,8 @@ HOST_CRYPTSETUP_DEPENDENCIES = \
 	host-json-c \
 	host-openssl
 
-HOST_CRYPTSETUP_CONF_OPTS = --with-crypto-backend=openssl
+HOST_CRYPTSETUP_CONF_OPTS = --with-crypto_backend=openssl \
+	--disable-kernel_crypto
 
 $(eval $(autotools-package))
 $(eval $(host-autotools-package))