From: Bruce Richardson <bruce.richardson@intel.com>
Date: Thu, 29 Mar 2018 13:54:35 +0000 (+0100)
Subject: examples: improve error report for missing meson deps
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=273d2325b682e9e3a511093162c77529c22b28d3;p=dpdk.git

examples: improve error report for missing meson deps

When a required library is missing on a platform, rather than having
meson report an error about the missing variable, catch the problem
earlier and provide a more readable message.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Harry van Haaren <harry.van.haaren@intel.com>
---

diff --git a/examples/meson.build b/examples/meson.build
index 16c3ab0052..3d15684970 100644
--- a/examples/meson.build
+++ b/examples/meson.build
@@ -32,8 +32,11 @@ foreach example: examples
 	if build
 		dep_objs = ext_deps
 		foreach d:deps
-			dep_objs += [get_variable(
-				get_option('default_library') + '_rte_' + d)]
+			var_name = get_option('default_library') + '_rte_' + d
+			if not is_variable(var_name)
+				error('Missing dependency "@0@" for example "@1@"'.format(d, name))
+			endif
+			dep_objs += [get_variable(var_name)]
 		endforeach
 		if allow_experimental_apis
 			cflags += '-DALLOW_EXPERIMENTAL_API'