[ptxdist] [PATCH v2 2/6] chrony: nettle authentication support

[Bruno Thomsen <bruno.thomsen@gmail.com>]

Use nettle crypto lib for stronger time packet
authentication support.

Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
---
Changes since version 1:
- Replace ptx/ifdef with ptx/endis and ptx/wwo for explicit options.
  This outputs unrecognized options, but we still get expected result.
  Unrecognized option :  --enable-sechash
  Unrecognized option :  --with-nettle

 rules/chrony.in   | 8 ++++++++
 rules/chrony.make | 4 ++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/rules/chrony.in b/rules/chrony.in
index 1f5e241c9..c81eba868 100644
--- a/rules/chrony.in
+++ b/rules/chrony.in
@@ -6,6 +6,7 @@ menuconfig CHRONY
 	prompt "chrony                        "
 	select LIBC_M
 	select LIBCAP
+	select NETTLE	if CHRONY_USE_NETTLE
 	help
 	  This will install the Chrony NTPD Daemon (chronyd)
 	  Chrony is a pair of programs which are used to maintain
@@ -21,6 +22,13 @@ menuconfig CHRONY
 
 if CHRONY
 
+config CHRONY_USE_NETTLE
+	bool
+	prompt "Use nettle crypto library"
+	help
+	  Use nettle crypto library for stronger keys than MD5 in
+	  NTP authentication.
+
 comment "install options   ---"
 
 config CHRONY_INSTALL_CHRONY_COMMAND
diff --git a/rules/chrony.make b/rules/chrony.make
index 06fc7fd9a..c7571cfc8 100644
--- a/rules/chrony.make
+++ b/rules/chrony.make
@@ -39,8 +39,8 @@ CHRONY_CONF_OPT		:= \
 	$(CROSS_AUTOCONF_USR) \
 	--disable-readline \
 	--without-editline \
-	--disable-sechash \
-	--without-nettle \
+	--$(call ptx/endis, PTXCONF_CHRONY_USE_NETTLE)-sechash \
+	--$(call ptx/wwo, PTXCONF_CHRONY_USE_NETTLE)-nettle \
 	--without-nss \
 	--without-tomcrypt \
 	--disable-cmdmon \
-- 
2.26.2


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