From ea888066a3d1d7503137fa0615f246739f8ec4a8 Mon Sep 17 00:00:00 2001
From: Doug Goldstein <cardoe@cardoe.com>
Date: Wed, 2 Nov 2016 16:25:14 -0500
Subject: [PATCH 1/3] rust-llvm: convert to cmake build

Future versions of LLVM require cmake to build so it will be easier to
prove that out on a known good build and to allow future versions to use
this as common code.
---
 .../0001-Don-t-build-unittests.patch          | 34 ---------------
 recipes-devtools/rust/rust-llvm.inc           | 42 +++++++++----------
 2 files changed, 19 insertions(+), 57 deletions(-)
 delete mode 100644 recipes-devtools/rust/files/rust-llvm/0001-Don-t-build-unittests.patch

diff --git a/recipes-devtools/rust/files/rust-llvm/0001-Don-t-build-unittests.patch b/recipes-devtools/rust/files/rust-llvm/0001-Don-t-build-unittests.patch
deleted file mode 100644
index 7a297d3..0000000
--- a/recipes-devtools/rust/files/rust-llvm/0001-Don-t-build-unittests.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-From eee79cc95f57434c4b530da96c88494e9b5d056b Mon Sep 17 00:00:00 2001
-From: Steven Walter <stevenrwalter@gmail.com>
-Date: Sat, 27 Aug 2016 13:20:48 -0400
-Subject: [PATCH] Don't build unittests
-
----
- Makefile | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/Makefile b/Makefile
-index 2b9468a..2bb30f6 100644
---- a/Makefile
-+++ b/Makefile
-@@ -31,7 +31,7 @@ ifeq ($(BUILD_DIRS_ONLY),1)
-   OPTIONAL_DIRS := tools/clang/utils/TableGen
- else
-   DIRS := lib/Support lib/TableGen utils lib/IR lib tools/llvm-shlib \
--          tools/llvm-config tools docs cmake unittests
-+          tools/llvm-config tools docs cmake
-   OPTIONAL_DIRS := projects bindings
- endif
- 
-@@ -39,7 +39,7 @@ ifeq ($(BUILD_EXAMPLES),1)
-   OPTIONAL_DIRS += examples
- endif
- 
--EXTRA_DIST := test unittests llvm.spec include win32 Xcode
-+EXTRA_DIST := test llvm.spec include win32 Xcode
- 
- include $(LEVEL)/Makefile.config
- 
--- 
-2.7.4
-
diff --git a/recipes-devtools/rust/rust-llvm.inc b/recipes-devtools/rust/rust-llvm.inc
index 201b1d0..880e3ec 100644
--- a/recipes-devtools/rust/rust-llvm.inc
+++ b/recipes-devtools/rust/rust-llvm.inc
@@ -3,25 +3,33 @@ LICENSE = "NCSA"
 
 SRC_URI = "\
 	https://static.rust-lang.org/dist/rustc-${PV}-src.tar.gz;name=rust \
-	file://rust-llvm/0001-Don-t-build-unittests.patch \
 "
 
 S = "${WORKDIR}/rustc-${PV}/src/llvm"
 
 LIC_FILES_CHKSUM = "file://LICENSE.TXT;md5=4c0bc17c954e99fd547528d938832bfa"
 
-inherit autotools
+inherit cmake pythonnative
 
-EXTRA_OECONF += "--enable-targets=x86,x86_64,arm,aarch64,mips,powerpc"
-EXTRA_OECONF += "--enable-optimized"
-EXTRA_OECONF += "--disable-assertions"
-EXTRA_OECONF += "--disable-docs"
-EXTRA_OECONF += "--enable-bindings=none"
-EXTRA_OECONF += "--disable-terminfo"
-EXTRA_OECONF += "--disable-zlib"
-EXTRA_OECONF += "--disable-libffi"
+EXTRA_OECMAKE = " \
+    -DLLVM_TARGETS_TO_BUILD='X86;ARM;AArch64;PowerPC' \
+    -DLLVM_ENABLE_ASSERTIONS=OFF \
+    -DLLVM_BUILD_DOCS=OFF \
+    -DLLVM_ENABLE_TERMINFO=OFF \
+    -DLLVM_ENABLE_ZLIB=OFF \
+    -DLLVM_ENABLE_FFI=OFF \
+    -DLLVM_INSTALL_UTILS=ON \
+    -DLLVM_BUILD_TOOLS=ON \
+    -DLLVM_BUILD_EXAMPLES=OFF \
+    -DLLVM_INCLUDE_EXAMPLES=OFF \
+    -DLLVM_BUILD_TESTS=OFF \
+    -DLLVM_INCLUDE_TESTS=OFF \
+    -DLLVM_TARGET_ARCH=${TARGET_ARCH} \
+"
 
-EXTRA_OECONF += "--enable-keep-symbols"
+# The debug symbols are huge here (>2GB) so suppress them since they
+# provide almost no value. If you really need them then override this
+INHIBIT_PACKAGE_DEBUG_SPLIT = "1"
 
 PACKAGES += "${PN}-data"
 
@@ -29,16 +37,4 @@ PACKAGES += "${PN}-data"
 FILES_${PN}-data = "${datadir}"
 FILES_${PN}-dev += "${libdir}"
 
-do_install_append () {
-	# Remove the debug info (>2 GB) as part of normal operation
-	rm -rf ${D}${bindir}/.debug
-
-	cd ${D}${bindir} || bbfatal "failed to cd ${D}${bindir}"
-	for i in *-llvm-* *-llc *-lli *-FileCheck; do
-		link=$(echo $i | sed -e "s/${TARGET_SYS}-\(.*\)/\1/")
-		[ -e "${i}" ] || bbfatal "no such file to symlink to ${i}"
-		ln -sf "$i" "${link}" || bbfatal "failed to symlink ${link} to ${i}"
-	done
-}
-
 BBCLASSEXTEND = "native"

From 404cbe3dccba9475ca6aaca9ad318bfe6b2682d9 Mon Sep 17 00:00:00 2001
From: Doug Goldstein <cardoe@cardoe.com>
Date: Thu, 3 Nov 2016 10:29:50 -0500
Subject: [PATCH 2/3] rust-llvm: cmake build bits from openswitch

Grabbed this chunk from
http://git.openswitch.net/cgit/openswitch/ops-build/tree/yocto/openswitch/meta-foss-openswitch/recipes-core/llvm/llvm.inc
The cmake.bbclass that poky ships with does not generate the proper
values for native builds so this is necessary to fix that up.
---
 recipes-devtools/rust/rust-llvm.inc | 74 +++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/recipes-devtools/rust/rust-llvm.inc b/recipes-devtools/rust/rust-llvm.inc
index 880e3ec..c8800b6 100644
--- a/recipes-devtools/rust/rust-llvm.inc
+++ b/recipes-devtools/rust/rust-llvm.inc
@@ -31,6 +31,80 @@ EXTRA_OECMAKE = " \
 # provide almost no value. If you really need them then override this
 INHIBIT_PACKAGE_DEBUG_SPLIT = "1"
 
+EXTRA_OECMAKE_append_class-target = "\
+  -DCROSS_TOOLCHAIN_FLAGS_NATIVE='-DCMAKE_TOOLCHAIN_FILE=${WORKDIR}/native_toolchain.cmake' \
+"
+
+do_generate_native_toolchain_file() {
+        cat > ${WORKDIR}/native_toolchain.cmake <<EOF
+set( CMAKE_SYSTEM_NAME `echo ${BUILD_OS} | sed -e 's/^./\u&/' -e 's/^\(Linux\).*/\1/'` )
+set( CMAKE_SYSTEM_PROCESSOR ${BUILD_ARCH} )
+set( CMAKE_C_COMPILER ${BUILD_CC} )
+set( CMAKE_CXX_COMPILER ${BUILD_CXX} )
+set( CMAKE_ASM_COMPILER ${BUILD_AS} )
+set( CMAKE_AR ${BUILD_AR} CACHE FILEPATH "Archiver" )
+set( CMAKE_C_FLAGS "${BUILD_CC_ARCH} ${BUILD_CFLAGS}" CACHE STRING "CFLAGS" )
+set( CMAKE_CXX_FLAGS "${BUILD_CC_ARCH} ${BUILD_CXXFLAGS}" CACHE STRING "CXXFLAGS" )
+set( CMAKE_ASM_FLAGS "${BUILD_CC_ARCH} ${BUILD_CFLAGS}" CACHE STRING "ASM FLAGS" )
+set( CMAKE_C_FLAGS_RELEASE "${SELECTED_OPTIMIZATION} ${BUILD_CFLAGS} -DNDEBUG" CACHE STRING "CFLAGS for release" )
+set( CMAKE_CXX_FLAGS_RELEASE "${SELECTED_OPTIMIZATION} ${BUILD_CXXFLAGS} -DNDEBUG" CACHE STRING "CXXFLAGS for release" )
+set( CMAKE_ASM_FLAGS_RELEASE "${SELECTED_OPTIMIZATION} ${BUILD_CFLAGS} -DNDEBUG" CACHE STRING "ASM FLAGS for release" )
+set( CMAKE_C_LINK_FLAGS "${BUILD_CC_ARCH} ${BUILD_CPPFLAGS} ${BUILD_LDFLAGS}" CACHE STRING "LDFLAGS" )
+set( CMAKE_CXX_LINK_FLAGS "${BUILD_CC_ARCH} ${BUILD_CXXFLAGS} ${BUILD_LDFLAGS}" CACHE STRING "LDFLAGS" )
+
+# only search in the paths provided so cmake doesnt pick
+# up libraries and tools from the native build machine
+set( CMAKE_FIND_ROOT_PATH ${STAGING_DIR_HOST} ${STAGING_DIR_NATIVE} ${CROSS_DIR} ${OECMAKE_PERLNATIVE_DIR} ${OECMAKE_EXTRA_ROOT_PATH} ${EXTERNAL_TOOLCHAIN})
+set( CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY )
+set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
+set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
+
+# Use native cmake modules
+set( CMAKE_MODULE_PATH ${STAGING_DATADIR}/cmake/Modules/ )
+
+# add for non /usr/lib libdir, e.g. /usr/lib64
+set( CMAKE_LIBRARY_PATH ${libdir} ${base_libdir})
+
+EOF
+}
+
+addtask generate_native_toolchain_file after do_patch before do_configure
+
+do_configure_prepend_class-native() {
+    # Use host paths for native tools
+    sed -i -e '/CMAKE_FIND_ROOT_PATH_MODE/d' ${WORKDIR}/toolchain.cmake
+}
+
+do_compile_prepend_class-target() {
+    # 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" ${S}/tools/llvm-config/llvm-config.cpp
+
+    # Fix the hardcoded libdir in llvm-config
+    sed -i 's:/lib\>:/${baselib}:g' ${S}/tools/llvm-config/llvm-config.cpp
+}
+
+do_compile() {
+    oe_runmake
+}
+
+do_install_append_class-target() {
+    # Disable checks on the native tools, since these should came from the native recipe
+    sed -i -e 's/\(.*APPEND.*_IMPORT_CHECK_FILES_FOR_.*{_IMPORT_PREFIX}\/bin\/.*\)/#\1/' ${D}/usr/share/llvm/cmake/LLVMExports-noconfig.cmake
+}
+
+SYSROOT_PREPROCESS_FUNCS_append_class-target = " llvm_sysroot_preprocess"
+SYSROOT_PREPROCESS_FUNCS_append_class-native = " llvm_native_sysroot_preprocess"
+
+llvm_sysroot_preprocess() {
+    install -d ${SYSROOT_DESTDIR}${bindir}
+    cp ${B}/NATIVE/bin/llvm-config ${SYSROOT_DESTDIR}/${bindir} || bbfatal "missing llvm-config"
+    cp ${B}/NATIVE/bin/llvm-tblgen ${SYSROOT_DESTDIR}/${bindir} || bbfatal "missing llvm-tblgen"
+}
+
+llvm_native_sysroot_preprocess() {
+    sysroot_stage_dir ${D}${STAGING_DIR_NATIVE}/usr/libexec ${SYSROOT_DESTDIR}${bindir}
+}
+
 PACKAGES += "${PN}-data"
 
 # Add the extra locations to avoid the complaints about unpackaged files

From 3b28ddab2b0a1f1440055b6cf8822d9194cbeeda Mon Sep 17 00:00:00 2001
From: Doug Goldstein <cardoe@cardoe.com>
Date: Thu, 3 Nov 2016 22:22:58 -0500
Subject: [PATCH 3/3] rust-llvm: fix up generated packages

Avoid issues with non-native builds by splitting up the packages a
little closer to how they should be while still leaving the main package
containing everything Rust uses. This makes it possible to build
rust-llvm for the target, hopefully improving issue #81.
---
 recipes-devtools/rust/rust-llvm.inc | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/recipes-devtools/rust/rust-llvm.inc b/recipes-devtools/rust/rust-llvm.inc
index c8800b6..fba8b22 100644
--- a/recipes-devtools/rust/rust-llvm.inc
+++ b/recipes-devtools/rust/rust-llvm.inc
@@ -105,10 +105,13 @@ llvm_native_sysroot_preprocess() {
     sysroot_stage_dir ${D}${STAGING_DIR_NATIVE}/usr/libexec ${SYSROOT_DESTDIR}${bindir}
 }
 
-PACKAGES += "${PN}-data"
+PACKAGES =+ "${PN}-bugpointpasses ${PN}-llvmhello ${PN}-liblto"
 
 # Add the extra locations to avoid the complaints about unpackaged files
-FILES_${PN}-data = "${datadir}"
-FILES_${PN}-dev += "${libdir}"
+FILES_${PN} += "${libdir}/libLLVM*.so"
+FILES_${PN}-dev += "${datadir}/llvm"
+FILES_${PN}-bugpointpasses = "${libdir}/BugpointPasses.so"
+FILES_${PN}-llvmhello = "${libdir}/LLVMHello.so"
+FILES_${PN}-liblto = "${libdir}/libLTO.so"
 
 BBCLASSEXTEND = "native"