sparse{i,c}: use LLVM_CONFIG to find llc and lli

Some systems have multiple llvm versions installed, and have prefixed
executables ("<exec>-<version>"). While we could require the user to
specify a variable for each executable (LLC, LLI), using llvm-config
--bindir to locate them and allowing them to override using LLVM_CONFIG
makes much less work.

Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Christopher Li <sparse@chrisli.org>

2 files changed, 4 insertions, 2 deletions

diff --git a/sparsec b/sparsec
index 9c90b305..9dc96c95 100755
--- a/sparsec
+++ b/sparsec
@@ -34,7 +34,9 @@ TMPFILE=`mktemp -t tmp.XXXXXX`".o"
 
 $DIRNAME/sparse-llvm $SPARSEOPTS > $TMPLLVM
 
-llc -o - $TMPLLVM | as -o $TMPFILE
+LLC=`"${LLVM_CONFIG:-llvm-config}" --bindir`/llc
+
+$LLC -o - $TMPLLVM | as -o $TMPFILE
 
 if [ $NEED_LINK -eq 1 ]; then
 	if [ -z $OUTFILE ]; then
diff --git a/sparsei b/sparsei
index 46321542..3431a9f0 100755
--- a/sparsei
+++ b/sparsei
@@ -3,7 +3,7 @@
 set +e
 
 DIRNAME=`dirname $0`
-LLI=`llvm-config --bindir`/lli
+LLI=`"${LLVM_CONFIG:-llvm-config}" --bindir`/lli
 
 if [ $# -eq 0 ]; then
   echo "`basename $0`: no input files"