Fix incorrect task dependencies from ${B}

Some tasks may reference ${B} for llvm-source which in general would not exist.
It has dependencies on HOST_SYS and TARGET_SYS which are not appropriate for a
shared recipe like llvm-source. This causes problems for the archiver and
multiconfigs in particlar.

Set B to something else to avoid these task hash issues.

Fixes issues #885

Signed-off-by: Khem Raj <[email protected]>

recipes-devtools/clang/common.inc

@@ -50,7 +50,7 @@ SRC_URI = "\
 GCCPIE ??= ""
 
 S = "${TMPDIR}/work-shared/llvm-project-source-${PV}-${PR}/llvm-project-${PV}.src"
-B = "${WORKDIR}/llvm-project-source-${PV}/build.${HOST_SYS}.${TARGET_SYS}"
+B ?= "${WORKDIR}/llvm-project-source-${PV}/build.${HOST_SYS}.${TARGET_SYS}"
 
 # We need to ensure that for the shared work directory, the do_patch signatures match
 # The real WORKDIR location isn't a dependency for the shared workdir.

recipes-devtools/clang/llvm-project-source.inc

@@ -25,6 +25,8 @@ TARGET_OS = "linux"
 baselib = "lib"
 PACKAGE_ARCH = "all"
 
+B = "${WORKDIR}/build"
+
 # space separated list of additional distro vendor values we want to support e.g.
 # "yoe webos" or "-yoe -webos" '-' is optional
 CLANG_EXTRA_OE_VENDORS ?= "${TARGET_VENDOR} ${SDK_VENDOR}"