================
@@ -0,0 +1,23 @@
+! Check -B driver option.
+!
+! Target triple prefix is not detected for -B.
+! RUN: %flang %s -### -o %t.o -target i386-unknown-linux \
+! RUN: -B %S/Inputs/B_opt_tree/dir1 -fuse-ld=ld 2>&1 \
+! RUN: | FileCheck --check-prefix=CHECK-B-OPT-TRIPLE %s
+! CHECK-B-OPT-TRIPLE-NOT:
"{{.*}}/Inputs/B_opt_tree/dir1{{/|\\\\}}i386-unknown-linux-ld"
+!
+! RUN: %flang %s -### -o %t.o -target i386-unknown-linux \
+! RUN: -B %S/Inputs/B_opt_tree/dir2 -fuse-ld=ld 2>&1 \
+! RUN: | FileCheck --check-prefix=CHECK-B-OPT-DIR %s
+! CHECK-B-OPT-DIR: "{{.*}}/Inputs/B_opt_tree/dir2{{/|\\\\}}ld"
+!
+! RUN: %flang %s -### -o %t.o -target i386-unknown-linux \
+! RUN: -B %S/Inputs/B_opt_tree/dir3/prefix- -fuse-ld=ld 2>&1 \
+! RUN: | FileCheck --check-prefix=CHECK-B-OPT-PREFIX %s
+! CHECK-B-OPT-PREFIX: "{{.*}}/Inputs/B_opt_tree/dir3{{/|\\\\}}prefix-ld"
+!
+! RUN: %flang %s -### -o %t.o -target i386-unknown-linux \
+! RUN: -B %S/Inputs/B_opt_tree/dir3/prefix- \
+! RUN: -B %S/Inputs/B_opt_tree/dir2 2>&1 -fuse-ld=ld \
+! RUN: | FileCheck --check-prefix=CHECK-B-OPT-MULT %s
+! CHECK-B-OPT-MULT: "{{.*}}/Inputs/B_opt_tree/dir3{{/|\\\\}}prefix-ld"
----------------
tblah wrote:
It is a bit surprising that we take the first version of `-B`. Most things use
the last argument.
But if this is just copied from clang, it is better to mimic clang's behavior,
and I don't think this would be safe to fix in clang because it could break
existing build scripts.
https://github.com/llvm/llvm-project/pull/109965
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