From 9481976d8020f593220a79531bc2dd56a17539f3 Mon Sep 17 00:00:00 2001
From: Alexander Kanavin <alex.kanavin@gmail.com>
Date: Thu, 7 Apr 2022 19:00:15 +0200
Subject: [PATCH] llvm: use default install paths

There was a very brittle sed hack against cpp source code
that allowed installing multiple llvm versions into the same
target/sysroot. Patching with sed is prone to silent
regressions as it can change both too little and too much,
and it indeed it broke with llvm 14. It's also difficult to tell
what the 'right' change should look like.

If this feature is actually needed somewhere, please do it properly:
proper patch and upstream first.

(From OE-Core rev: 974f67b18a2f1a15c76785d69e7234594af97a88)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 meta/recipes-devtools/llvm/llvm_git.bb | 58 +++++++-------------------
 meta/recipes-graphics/mesa/mesa.inc    |  2 +-
 2 files changed, 17 insertions(+), 43 deletions(-)

diff --git a/meta/recipes-devtools/llvm/llvm_git.bb b/meta/recipes-devtools/llvm/llvm_git.bb
index 13f7fb763e..e10348a7f2 100644
--- a/meta/recipes-devtools/llvm/llvm_git.bb
+++ b/meta/recipes-devtools/llvm/llvm_git.bb
@@ -24,7 +24,6 @@ PV = "14.0.0"
 MAJOR_VERSION = "${@oe.utils.trim_version("${PV}", 1)}"
 
 LLVM_RELEASE = "${PV}"
-LLVM_DIR = "llvm${LLVM_RELEASE}"
 
 BRANCH = "release/${MAJOR_VERSION}.x"
 SRCREV = "329fda39c507e8740978d10458451dcdb21563be"
@@ -91,13 +90,6 @@ EXTRA_OECMAKE:append:class-nativesdk = "\
                   -DLLVM_CONFIG_PATH=${STAGING_BINDIR_NATIVE}/llvm-config${PV} \
                  "
 
-do_configure:prepend() {
-# Fix paths in llvm-config
-	sed -i "s|sys::path::parent_path(CurrentPath))\.str()|sys::path::parent_path(sys::path::parent_path(CurrentPath))).str()|g" ${S}/tools/llvm-config/llvm-config.cpp
-	sed -ri "s#/(bin|include|lib)(/?\")#/\1/${LLVM_DIR}\2#g" ${S}/tools/llvm-config/llvm-config.cpp
-	sed -ri "s#lib/${LLVM_DIR}#${baselib}/${LLVM_DIR}#g" ${S}/tools/llvm-config/llvm-config.cpp
-}
-
 # patch out build host paths for reproducibility
 do_compile:prepend:class-target() {
         sed -i -e "s,${WORKDIR},,g" ${B}/tools/llvm-config/BuildVariables.inc
@@ -112,34 +104,17 @@ do_compile:class-native() {
 }
 
 do_install() {
-	DESTDIR=${LLVM_INSTALL_DIR} ninja -v install
-	install -D -m 0755 ${B}/bin/llvm-config ${D}${libdir}/${LLVM_DIR}/llvm-config
+	DESTDIR=${D} ninja -v install
 
-	install -d ${D}${bindir}/${LLVM_DIR}
-	cp -r ${LLVM_INSTALL_DIR}${bindir}/* ${D}${bindir}/${LLVM_DIR}/
+        # llvm harcodes usr/lib as install path, so this corrects it to actual libdir
+        mv -T -n ${D}/${prefix}/lib ${D}/${libdir} || true
 
-	install -d ${D}${includedir}/${LLVM_DIR}
-	cp -r ${LLVM_INSTALL_DIR}${includedir}/* ${D}${includedir}/${LLVM_DIR}/
+        # Remove opt-viewer: https://llvm.org/docs/Remarks.html
+        rm -rf ${D}${datadir}/opt-viewer
+        rmdir ${D}${datadir}
 
-	install -d ${D}${libdir}/${LLVM_DIR}
-
-	# The LLVM sources have "/lib" embedded and so we cannot completely rely on the ${libdir} variable
-	if [ -d ${LLVM_INSTALL_DIR}${libdir}/ ]; then
-		cp -r ${LLVM_INSTALL_DIR}${libdir}/* ${D}${libdir}/${LLVM_DIR}/
-	elif [ -d ${LLVM_INSTALL_DIR}${prefix}/lib ]; then
-		cp -r ${LLVM_INSTALL_DIR}${prefix}/lib/* ${D}${libdir}/${LLVM_DIR}/
-	elif [ -d ${LLVM_INSTALL_DIR}${prefix}/lib64 ]; then
-		cp -r ${LLVM_INSTALL_DIR}${prefix}/lib64/* ${D}${libdir}/${LLVM_DIR}/
-	fi
-
-	# Remove unnecessary cmake files
-	rm -rf ${D}${libdir}/${LLVM_DIR}/cmake
-
-	ln -s ${LLVM_DIR}/libLLVM-${MAJOR_VERSION}${SOLIBSDEV} ${D}${libdir}/libLLVM-${MAJOR_VERSION}${SOLIBSDEV}
-
-	# We'll have to delete the libLLVM.so due to multiple reasons...
-	rm -rf ${D}${libdir}/${LLVM_DIR}/libLLVM.so
-	rm -rf ${D}${libdir}/${LLVM_DIR}/libLTO.so
+        # reproducibility
+        sed -i -e 's,${WORKDIR},,g' ${D}/${libdir}/cmake/llvm/LLVMConfig.cmake
 }
 
 do_install:class-native() {
@@ -152,34 +127,33 @@ PACKAGES =+ "${PN}-bugpointpasses ${PN}-llvmhello ${PN}-libllvm ${PN}-liboptrema
 RRECOMMENDS:${PN}-dev += "${PN}-bugpointpasses ${PN}-llvmhello ${PN}-liboptremarks"
 
 FILES:${PN}-bugpointpasses = "\
-    ${libdir}/${LLVM_DIR}/BugpointPasses.so \
+    ${libdir}/BugpointPasses.so \
 "
 
 FILES:${PN}-libllvm = "\
-    ${libdir}/${LLVM_DIR}/libLLVM-${MAJOR_VERSION}.so \
     ${libdir}/libLLVM-${MAJOR_VERSION}.so \
 "
 
 FILES:${PN}-liblto += "\
-    ${libdir}/${LLVM_DIR}/libLTO.so.* \
+    ${libdir}/libLTO.so.* \
 "
 
 FILES:${PN}-liboptremarks += "\
-    ${libdir}/${LLVM_DIR}/libRemarks.so.* \
+    ${libdir}/libRemarks.so.* \
 "
 
 FILES:${PN}-llvmhello = "\
-    ${libdir}/${LLVM_DIR}/LLVMHello.so \
+    ${libdir}/LLVMHello.so \
 "
 
 FILES:${PN}-dev += " \
-    ${libdir}/${LLVM_DIR}/llvm-config \
-    ${libdir}/${LLVM_DIR}/libRemarks.so \
-    ${libdir}/${LLVM_DIR}/libLLVM-${PV}.so \
+    ${libdir}/llvm-config \
+    ${libdir}/libRemarks.so \
+    ${libdir}/libLLVM-${PV}.so \
 "
 
 FILES:${PN}-staticdev += "\
-    ${libdir}/${LLVM_DIR}/*.a \
+    ${libdir}/*.a \
 "
 
 INSANE_SKIP:${PN}-libllvm += "dev-so"
diff --git a/meta/recipes-graphics/mesa/mesa.inc b/meta/recipes-graphics/mesa/mesa.inc
index e8c07a4563..21fa1a6a9e 100644
--- a/meta/recipes-graphics/mesa/mesa.inc
+++ b/meta/recipes-graphics/mesa/mesa.inc
@@ -52,7 +52,7 @@ ANY_OF_DISTRO_FEATURES:class-target = "opengl vulkan"
 
 PLATFORMS ??= "${@bb.utils.filter('PACKAGECONFIG', 'x11 wayland', d)}"
 
-export YOCTO_ALTERNATE_EXE_PATH = "${STAGING_LIBDIR}/llvm${MESA_LLVM_RELEASE}/llvm-config"
+export YOCTO_ALTERNATE_EXE_PATH = "${STAGING_LIBDIR}/llvm-config"
 export YOCTO_ALTERNATE_MULTILIB_NAME = "${base_libdir}"
 export LLVM_CONFIG = "${STAGING_BINDIR_NATIVE}/llvm-config${MESA_LLVM_RELEASE}"
 export WANT_LLVM_RELEASE = "${MESA_LLVM_RELEASE}"