qt5-creator: Make clang a PACKAGECONFIG - enabled for clang toolchain

Test case:
* meta-clang in layers
* gcc toolchain
* build qttools with PACKAGECONFIG[clang] enabled to get (native) help tools.

After setting clang PACKAGECONFIG at qttools, qt5-creator builds failed due to
linker errors: Linker tried to link against native clang tools. Avoid that in
the same way as clang-toolchain did but use PACKAGECONFIG.

* clang-toolchain builds remain unchanged
* a hint was dropped in the recipe to support users failing for same issue

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>

1 files changed, 12 insertions, 6 deletions

diff --git a/recipes-qt/qt5/qt5-creator_git.bb b/recipes-qt/qt5/qt5-creator_git.bb
index 0dd9c234..39f202d6 100644
--- a/recipes-qt/qt5/qt5-creator_git.bb
+++ b/recipes-qt/qt5/qt5-creator_git.bb
@@ -15,7 +15,6 @@ LIC_FILES_CHKSUM = " \
 inherit qmake5 mime-xdg
 
 DEPENDS += "qtbase qtscript qtxmlpatterns qtx11extras qtdeclarative qttools qttools-native qtsvg chrpath-replacement-native zlib"
-DEPENDS_append_toolchain-clang = " clang llvm-common"
 DEPENDS_append_libc-musl = " libexecinfo"
 
 SRCREV = "501e7c2fddec6b93e273dadcac389cd8c934cf00"
@@ -34,6 +33,13 @@ EXTRA_QMAKEVARS_PRE += "IDE_LIBRARY_BASENAME=${baselib}${QT_DIR_NAME}"
 
 EXTRANATIVEPATH += "chrpath-native"
 
+PACKAGECONFIG ??= ""
+PACKAGECONFIG_append_toolchain-clang = " clang"
+
+# Important note: In case clang was added to qttools' PACKAGECONFIG, it has to
+# be added here too - otherwise build fails trying to link native clang libraries
+PACKAGECONFIG[clang] = ",,clang llvm-common"
+
 COMPATIBLE_HOST_toolchain-clang_riscv32 = "null"
 COMPATIBLE_HOST_toolchain-clang_riscv64 = "null"
 
@@ -50,11 +56,11 @@ do_configure_append() {
 
 do_install() {
     oe_runmake install INSTALL_ROOT=${D}${prefix}
-}
-do_install_append_toolchain-clang () {
-    # Remove RPATHs embedded in bins
-    chrpath --delete ${D}${libdir}/qtcreator/plugins/libClang*
-    chrpath --delete ${D}${libexecdir}/qtcreator/clang*
+    if [ "${@bb.utils.contains("PACKAGECONFIG", "clang", "1", "0", d)}" = "1" ]; then
+        # Remove RPATHs embedded in bins
+        chrpath --delete ${D}${libdir}/qtcreator/plugins/libClang*
+        chrpath --delete ${D}${libexecdir}/qtcreator/clang*
+    fi
 }
 
 FILES_${PN} += " \