From b0986d91ff1616eb9f76d3797312892a892d1c1f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ga=C3=ABtan=20Harter?= <gaetan.harter@fu-berlin.de>
Date: Mon, 6 Aug 2018 14:56:51 +0200
Subject: [PATCH] pkg/ccn-lite: check for minimal cmake version

ccn-lite does not build with cmake < 3.6.0. This checks for a minimal version
instead of failing to compile.

    cmake version 3.5.2 is not >= to minimal required 3.6.0

    Makefile:25: recipe for target '..cmake_version_supported' failed

Tested with versions 3.5.2, 3.6.0-rc1, 3.6.0, 3.6.3, 3.7.0-rc1, 3.7.0.

Note: the check used does not consider '-rcX' as 'sort -V' does not handle them
properly.
---
 pkg/ccn-lite/Makefile | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/pkg/ccn-lite/Makefile b/pkg/ccn-lite/Makefile
index bc63c1fb94..58ee622b60 100644
--- a/pkg/ccn-lite/Makefile
+++ b/pkg/ccn-lite/Makefile
@@ -3,7 +3,10 @@ PKG_URL=https://github.com/cn-uofbasel/ccn-lite/
 PKG_VERSION=f85a2a055db92b5978f2d4f92b830b5b6b9acb42
 PKG_LICENSE=ISC
 
-.PHONY: all
+.PHONY: all ..cmake_version_supported
+
+CMAKE_MINIMAL_VERSION = 3.6.0
+
 
 RIOT_CFLAGS = $(INCLUDES)
 
@@ -17,10 +20,18 @@ $(PKG_BUILDDIR)/src/Makefile: $(TOOLCHAIN_FILE)
 	cd $(PKG_BUILDDIR)/src && \
 	cmake -DCMAKE_TOOLCHAIN_FILE=$(TOOLCHAIN_FILE) \
 		  -DCCNL_RIOT=1 -DRIOT_CFLAGS="$(RIOT_CFLAGS)" -DBUILD_TESTING=OFF .
-
 $(TOOLCHAIN_FILE): git-download
 	$(RIOTTOOLS)/cmake/generate-xcompile-toolchain.sh > $(TOOLCHAIN_FILE)
 
+git-download: | ..cmake_version_supported
+
+..cmake_version_supported:
+	@ # Remove '-rcX' from version as they are not well handled
+	$(Q)\
+	CMAKE_VERSION=$$(cmake --version | sed -n '1 {s/cmake version //;s/-rc.*//;p;}'); \
+	$(RIOTTOOLS)/has_minimal_version/has_minimal_version.sh "$${CMAKE_VERSION}" "$(CMAKE_MINIMAL_VERSION)" cmake
+
+
 include $(RIOTBASE)/pkg/pkg.mk
 ifneq (,$(filter -Wformat-nonliteral -Wformat=2, $(CFLAGS)))
   CFLAGS += -Wno-format-nonliteral