Signed-off-by: Michał Górny <mgorny@gentoo.org>
---
eclass/llvm-utils.eclass | 27 ++++++++++++++++++++++++---
1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/eclass/llvm-utils.eclass b/eclass/llvm-utils.eclass
index 1ae3295484c8..b105e169fbc4 100644
--- a/eclass/llvm-utils.eclass
+++ b/eclass/llvm-utils.eclass
@@ -113,17 +113,38 @@ llvm_fix_tool_path() {
}

# @FUNCTION: llvm_prepend_path
-# @USAGE: <slot>
+# @USAGE: [-b|-d] <slot>
# @DESCRIPTION:
# Prepend the path to the specified LLVM slot to PATH variable,
# and reexport it.
+#
+# With no option or "-d", the path is prefixed by ESYSROOT. LLVM
+# dependencies should be in DEPEND then.
+#
+# With "-b" option, the path is prefixed by BROOT. LLVM dependencies
+# should be in BDEPEND then.
llvm_prepend_path() {
debug-print-function ${FUNCNAME} "$@"

- [[ ${#} -ne 1 ]] && die "Usage: ${FUNCNAME} <slot>"
+ local prefix
+ case ${1--d} in
+ -d)
+ prefix=${ESYSROOT}
+ shift
+ ;;
+ -b)
+ prefix=${BROOT}
+ shift
+ ;;
+ -*)
+ die "${FUN