llvm: make llvm-config wrapper error message more understandable

The llvm-config wrapper has an error message that is quite abrupt, expand it so
it helps the user.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/meta-oe/recipes-core/llvm/llvm-common/llvm-config b/meta-oe/recipes-core/llvm/llvm-common/llvm-config
index a9a416d93..b0f33c8d6 100644
--- a/meta-oe/recipes-core/llvm/llvm-common/llvm-config
+++ b/meta-oe/recipes-core/llvm/llvm-common/llvm-config
@@ -4,7 +4,8 @@
 if [ $WANT_LLVM_RELEASE ]; then
         exec `dirname $0`/${TARGET_PREFIX}llvm-config$WANT_LLVM_RELEASE ${@}
 else
-  echo "The variable WANT_LLVM_RELEASE is not defined and exported"
-        echo "by your build recipe. Go figure."
-  exit 1
+        echo "To use llvm-common WANT_LLVM_RELEASE needs to be exported."
+        echo "For example if this is being called through a recipe:"
+        echo "export WANT_LLVM_RELEASE=\"3.3\""
+        exit 1
 fi