Add recipe for Perfetto

Perfetto (https://perfetto.dev/) is a system profiling, app tracing
and trace analysis framework.

We started using Perfetto for studying a few performance-related
problems for OpenBMC-based systems (both the BMC and the host)
and we feel it would be good if Perfetto is included into
OpenEmbedded, since embedded systems are usually expected to have
predictable performance characteristics, and having a good set of
performance analysis tools would make this work easier.

Tested: bitbake compile, devtool extract and override

Signed-off-by: Sui Chen <[email protected]>

meta-oe/recipes-devtools/perfetto/files/0001-Remove-check_build_deps-build-steps.patch

@@ -0,0 +1,71 @@
+From 3b7091243ec03054ca8800b51b85a1c09e7e3075 Mon Sep 17 00:00:00 2001
+From: Sui Chen <[email protected]>
+Date: Mon, 13 Jun 2022 17:46:49 +0000
+Subject: [PATCH] Remove "check_build_deps" build steps
+
+When building with Bitbake, we want Bitbake to manage our dependencies,
+so we remove the "check_build_deps" steps from Perfetto.
+
+Also setting "is_cross_compiling" to true, so that the host-side tools
+(such as protoc) will always be generated using the native toolchain,
+rather than the Bitbake-generated one.
+
+Signed-off-by: Sui Chen <[email protected]>
+---
+ gn/BUILD.gn                  |  1 -
+ gn/standalone/BUILD.gn       | 12 ++++++------
+ gn/standalone/BUILDCONFIG.gn |  5 +++--
+ 3 files changed, 9 insertions(+), 9 deletions(-)
+
+diff --git a/gn/BUILD.gn b/gn/BUILD.gn
+index 8a7ca72a8..e4a2d39f0 100644
+--- a/gn/BUILD.gn
++++ b/gn/BUILD.gn
+@@ -111,7 +111,6 @@ group("default_deps") {
+   deps = [ ":gen_buildflags" ]
+   if (perfetto_build_standalone) {
+     public_deps = [
+-      "//gn/standalone:check_build_deps",
+       "//gn/standalone/libc++:deps",
+       "//gn/standalone/sanitizers:deps",
+     ]
+diff --git a/gn/standalone/BUILD.gn b/gn/standalone/BUILD.gn
+index 582e9b867..9c77ac64c 100644
+--- a/gn/standalone/BUILD.gn
++++ b/gn/standalone/BUILD.gn
+@@ -441,10 +441,10 @@ config("android_liblog") {
+ }
+
+ # Checks that tools/install-build-deps has been run since it last changed.
+-perfetto_check_build_deps("check_build_deps") {
+-  args = []
+-}
++#perfetto_check_build_deps("check_build_deps") {
++#  args = []
++#}
+
+-perfetto_check_build_deps("check_build_deps_android") {
+-  args = [ "--android" ]
+-}
++#perfetto_check_build_deps("check_build_deps_android") {
++#  args = [ "--android" ]
++#}
+diff --git a/gn/standalone/BUILDCONFIG.gn b/gn/standalone/BUILDCONFIG.gn
+index 6f32686c1..c041989b0 100644
+--- a/gn/standalone/BUILDCONFIG.gn
++++ b/gn/standalone/BUILDCONFIG.gn
+@@ -59,8 +59,9 @@ declare_args() {
+   # the ossfuzz sanitizer overrides this to true. In that config the
+   # host/target cpu and arch are identical, but we want to build only the
+   # targets with the sanitizer/fuzzer flags
+-  is_cross_compiling =
+-      target_cpu != host_cpu || target_os != host_os || target_triplet != ""
++
++  # for Bitbake build
++  is_cross_compiling = true
+ }
+ default_configs = [
+   "//gn/standalone:debug_symbols",
+-- 
+2.37.1
+

meta-oe/recipes-devtools/perfetto/perfetto.bb

@@ -0,0 +1,150 @@
+LICENSE = "Apache-2.0 & BSD-3-Clause & MIT & Zlib"
+
+LIC_FILES_CHKSUM = "file://LICENSE;md5=f87516e0b698007e9e75a1fe1012b390 \
+                    file://buildtools/libcxx/LICENSE.TXT;md5=55d89dd7eec8d3b4204b680e27da3953 \
+                    file://buildtools/libcxx/utils/google-benchmark/LICENSE;md5=3b83ef96387f14655fc854ddc3c6bd57 \
+                    file://buildtools/libcxxabi/LICENSE.TXT;md5=7b9334635b542c56868400a46b272b1e \
+                    file://buildtools/libunwind/LICENSE.TXT;md5=f66970035d12f196030658b11725e1a1 \
+                    file://buildtools/protobuf/LICENSE;md5=37b5762e07f0af8c74ce80a8bda4266b \
+                    file://buildtools/zlib/LICENSE;md5=f09575dbfb09420642318b413159496f \
+                    file://debian/copyright;md5=4e08364c82141f181de69d0a2b89d612 \
+                    file://python/LICENSE;md5=c602a632c34ade9c78a976734077bce7"
+
+SRC_URI = "git://github.com/google/perfetto.git;branch=master;protocol=https;name=perfetto \
+           git://github.com/protocolbuffers/protobuf.git;branch=3.9.x;protocol=https;destsuffix=git/buildtools/protobuf;name=protobuf \
+           git://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxx.git;protocol=https;destsuffix=git/buildtools/libcxx;branch=main;name=libcxx \
+           git://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxxabi.git;protocol=https;destsuffix=git/buildtools/libcxxabi;branch=main;name=libcxxabi \
+           git://chromium.googlesource.com/external/github.com/llvm/llvm-project/libunwind.git;protocol=https;destsuffix=git/buildtools/libunwind;branch=main;name=libunwind \
+           git://android.googlesource.com/platform/external/zlib.git;branch=master;protocol=https;destsuffix=git/buildtools/zlib;name=zlib \
+           https://storage.googleapis.com/perfetto/gn-linux64-1968-0725d782;subdir=git/buildtools/;name=gn \
+           file://0001-Remove-check_build_deps-build-steps.patch "
+
+SRCREV_perfetto = "5bd3f582c075d0d026c5fe0b5e291d34dee0d976"
+SRCREV_protobuf = "6a59a2ad1f61d9696092f79b6d74368b4d7970a3"
+SRCREV_libcxx = "d9040c75cfea5928c804ab7c235fed06a63f743a"
+SRCREV_libcxxabi = "196ba1aaa8ac285d94f4ea8d9836390a45360533"
+SRCREV_libunwind = "d999d54f4bca789543a2eb6c995af2d9b5a1f3ed"
+SRCREV_zlib = "5c85a2da4c13eda07f69d81a1579a5afddd35f59"
+SRC_URI[gn.sha256sum] = "f706aaa0676e3e22f5fc9ca482295d7caee8535d1869f99efa2358177b64f5cd"
+
+DEPENDS += " ninja-native"
+
+COMPATIBLE_HOST = "(i.86|x86_64|aarch64|arm).*-linux*"
+
+FILES:${PN}:append = " \
+  ${bindir}/tracebox \
+  "
+
+S = "${WORKDIR}/git"
+B = "${WORKDIR}/build"
+
+# Run the GN (Generate Ninja) script, and replace the compiler flags where applicable
+do_configure () {
+    # Configuration needs to be done from the source directory
+    cd ${S}
+    # Rename a few build tools if they have not been renamed
+    cd buildtools
+    x="gn-linux64-1968-0725d782"
+    [ -f $x ] && mkdir linux64 && mv $x linux64/gn
+    chmod +x linux64/gn
+    cd ..
+
+    CC_BIN=`echo $CC | awk '{print $1}'`
+    CXX_BIN=`echo $CXX | awk '{print $1}'`
+    STRIP_BIN=`echo $STRIP | awk '{print $1}'`
+
+    ARGS="is_debug=false "  # Tell gn to use release mode
+
+    if [ -z `echo ${TOOLCHAIN} | grep clang` ]; then
+        ARGS=$ARGS" is_clang=false"
+    else
+        ARGS=$ARGS" is_clang=true"
+    fi
+
+    # Architecture parameter accepted by Perfetto
+    arch=${TARGET_ARCH}
+    if [ $arch = "i686" ]; then
+        arch="x86"
+    elif [ $arch = "x86_64" ]; then
+        arch="x64"
+    elif [ $arch = "aarch64" ]; then
+        arch="arm64"
+    fi
+
+    # For ARM32 with hardware floating point using clang and musl, we need to
+    # specify -mfloat-abi=hard to make the ABI settings of the linker and the
+    # compiler match. The linker would use hardware float ABI. The compiler does
+    # not. As a result we need to force the compiler to do so by adding
+    # -mfloat-abi=hard to compilation flags.
+    FLOAT_ABI=""
+    if [[ "${@bb.utils.contains('TUNE_FEATURES', 'callconvention-hard', 'true', 'false', d)}" == "true" ]]; then
+      FLOAT_ABI="-mfloat-abi=hard"
+    fi
+
+    ARGS=$ARGS" target_os=\"linux\""
+    ARGS=$ARGS" target_cpu=\"$arch\""
+    ARGS=$ARGS" target_cc=\"$CC_BIN ${FLOAT_ABI}\""
+    ARGS=$ARGS" target_cxx=\"$CXX_BIN -std=c++11 ${FLOAT_ABI}\""
+    ARGS=$ARGS" target_strip=\"$STRIP_BIN\"" #
+    ARGS=$ARGS" target_sysroot=\"${RECIPE_SYSROOT}\""
+    ARGS=$ARGS" target_linker=\"$CC_BIN ${FLOAT_ABI} ${LDFLAGS}\""
+    ARGS=$ARGS" target_ar=\"$AR\""
+    ARGS="'$ARGS'"
+    cmd="tools/gn gen --args=$ARGS ${B}"
+
+    echo $cmd
+    # Use eval, not just call $cmd, due to escaping of single quotation marks
+    eval $cmd
+
+    cd ${B}
+    # Eliminate a few incompatible build flags
+    REPLACES="s/-Wl,--icf=all//g"
+    REPLACES=$REPLACES";s/-Werror//g"
+    REPLACES=$REPLACES";s/-mfpu=neon//g"
+    REPLACES=$REPLACES";s/-fcolor-diagnostics//g"
+    REPLACES=$REPLACES";s/=format-security//g"
+    REPLACES=$REPLACES";s/-fdiagnostics-show-template-tree//g"
+    REPLACES=$REPLACES";s/-D_FORTIFY_SOURCE=2//g"
+    REPLACES=$REPLACES";s/-fuse-ld=\S*//g"
+
+    find . -name "*.ninja" | xargs sed $REPLACES -i
+
+    # If using the clang toolchain: use the clang host-side binaries built by Bitbake
+    if [ "${TOOLCHAIN}" = "clang" ]; then
+        BB_CLANGXX="${BUILD_CXX} ${BUILD_LDFLAGS} ${FLOAT_ABI}"
+        BB_CLANG="${BUILD_CC} ${FLOAT_ABI}"
+        BB_LLVM_OBJCOPY="${RECIPE_SYSROOT_NATIVE}/usr/bin/llvm-objcopy"
+
+        HOST_CLANGXX="${STAGING_DIR_NATIVE}/usr/bin/clang++ -stdlib=libc++ -rtlib=libgcc -unwindlib=libgcc ${FLOAT_ABI}"
+        HOST_CLANG="${STAGING_DIR_NATIVE}/usr/bin/clang ${FLOAT_ABI}"
+        HOST_LLVM_OBJCOPY="${STAGING_DIR_NATIVE}/usr/bin/llvm-objcopy"
+
+        cd gcc_like_host
+        REPLACES="s:\S*clang++ :$HOST_CLANGXX :g"
+        REPLACES=$REPLACES";s:\S*clang :$HOST_CLANG :g"
+        REPLACES=$REPLACES";s:\S*llvm-objcopy :$HOST_LLVM_OBJCOPY :g"
+        find . -name "*.ninja" | xargs sed "$REPLACES" -i
+        cd ..
+    fi
+
+    # Done processing the Ninja files
+    if [ "${TCLIBC}" = "musl" ]; then
+        sed -e 's/strtoll_l(__a, \&__p2, __base, _LIBCPP_GET_C_LOCALE)/strtoll(__a, \&__p2, __base)/g' \
+            -e 's/strtoull_l(__a, \&__p2, __base, _LIBCPP_GET_C_LOCALE)/strtoull(__a, \&__p2, __base)/g' \
+            ${S}/buildtools/libcxx/include/locale -i
+    fi
+}
+
+# Perfetto generates a few different binaries, such as traced and traced_probes and perfetto.
+# The "tracebox" is a busybox that combines the 3 above and provides a single stop for trace capture, so we only build "tracebox" here.
+do_compile () {
+    cd ${B}
+    ninja -C . tracebox
+}
+
+do_install () {
+    BIN_DIR=${D}${bindir}
+
+    install -d -m0755 $BIN_DIR
+    install ${B}/tracebox $BIN_DIR/tracebox
+}