configure: provide llvm_as helper variable

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewer: Aaron Watry
llvm-svn: 347663

libclc/configure.py

@@ -86,6 +86,7 @@ def llvm_config(args):
 llvm_libdir = llvm_config(['--libdir'])
 
 llvm_clang = os.path.join(llvm_bindir, 'clang')
+llvm_as = os.path.join(llvm_bindir, 'llvm-as')
 llvm_link = os.path.join(llvm_bindir, 'llvm-link')
 llvm_opt = os.path.join(llvm_bindir, 'opt')
 
@@ -133,8 +134,7 @@ def llvm_config(args):
 
 b = metabuild.from_name(options.g)
 
-b.rule("LLVM_AS", "%s -o $out $in" % os.path.join(llvm_bindir, "llvm-as"),
-       'LLVM-AS $out')
+b.rule("LLVM_AS", "%s -o $out $in" % llvm_as, 'LLVM-AS $out')
 b.rule("LLVM_LINK", command = llvm_link + " -o $out $in",
        description = 'LLVM-LINK $out')
 b.rule("OPT", command = llvm_opt + " -O3 -o $out $in",