configure.ac: add llvm_add_optional_component helper

We want to add "optional" components, which have been added with later
LLVM versions.

One such in-tree example is inteljitevents. Others are to follow
shortly.

v2: Use the correct function, add blank line between functions (Tobias)

Cc: [email protected]
Signed-off-by: Emil Velikov <[email protected]>
Reviewed-by: Tobias Droste <[email protected]>

1 files changed, 10 insertions, 3 deletions

diff --git a/configure.ac b/configure.ac
index 751f70a02ab..d22b522278c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -955,6 +955,15 @@ llvm_add_component() {
     fi
 }
 
+llvm_add_optional_component() {
+    new_llvm_component=$1
+    driver_name=$2
+
+    if $LLVM_CONFIG --components | grep -iqw $new_llvm_component ; then
+        LLVM_COMPONENTS="${LLVM_COMPONENTS} ${new_llvm_component}"
+    fi
+}
+
 llvm_add_default_components() {
     driver_name=$1
 
@@ -965,9 +974,7 @@ llvm_add_default_components() {
     llvm_add_component "mcjit" $driver_name
 
     # Optional default components
-    if $LLVM_CONFIG --components | grep -iqw inteljitevents ; then
-        LLVM_COMPONENTS="$LLVM_COMPONENTS inteljitevents"
-    fi
+    llvm_add_optional_component "inteljitevents" $driver_name
 }
 
 llvm_add_target() {