[oe-commits] [meta-openembedded] 14/15: BCC: Add build recipe

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commit 4c6737552e20e7c7c2283caf905dfdf6667f5dcd
Author: Sumit Garg <sumit.garg at linaro.org>
AuthorDate: Tue Feb 18 13:25:43 2020 +0800

    BCC: Add build recipe
    
    BPF Compiler Collection (BCC) is a toolkit for creating efficient kernel
    tracing and manipulation programs, and includes versatile tools and
    examples which based on eBPF.  This tool is very widely used on server
    section, but we also can use it for embedded system, e.g. use its
    function trace utilities (trace.py and argdist.py) to trace kernel
    function parameters and return values.
    
    This patch adds recipe for BCC version 0.12.0.  This patch also contains
    a patch to change cmake file so can look for libraries and headers which
    are installed in target sysroot-recipe path for cross compilation.
    
    Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
    Co-developed-by: Leo Yan <leo.yan at linaro.org>
    Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
 ...build-with-OE-LLVM-cross-compiled-package.patch | 32 +++++++++++++++++++
 meta-oe/recipes-devtools/bcc/bcc_0.12.0.bb         | 37 ++++++++++++++++++++++
 2 files changed, 69 insertions(+)

diff --git a/meta-oe/recipes-devtools/bcc/bcc/0001-Allow-to-build-with-OE-LLVM-cross-compiled-package.patch b/meta-oe/recipes-devtools/bcc/bcc/0001-Allow-to-build-with-OE-LLVM-cross-compiled-package.patch
new file mode 100644
index 0000000..b5acadc
--- /dev/null
+++ b/meta-oe/recipes-devtools/bcc/bcc/0001-Allow-to-build-with-OE-LLVM-cross-compiled-package.patch
@@ -0,0 +1,32 @@
+From 93cf25ba663e68a6a6f4237fbe0ef8349b3f37ef Mon Sep 17 00:00:00 2001
+From: Sumit Garg <sumit.garg at linaro.org>
+Date: Fri, 14 Feb 2020 07:40:11 +0000
+Subject: [PATCH] Allow to build with OE LLVM cross compiled package
+
+The default LLVM cmake package requires all libraries, headers and tools
+to be present but in case of cross compilation, OE only provides
+target specific libraries and headers and requires native llvm tools.
+
+So instead of looking for a complete llvm package, look for libraries and
+headers which are installed in target sysroot-recipe path.
+
+Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
+---
+ CMakeLists.txt | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 7bd0f3b2..6f1f12c0 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -39,8 +39,6 @@ endif()
+ if(NOT PYTHON_ONLY AND ENABLE_CLANG_JIT)
+ find_package(BISON)
+ find_package(FLEX)
+-find_package(LLVM REQUIRED CONFIG)
+-message(STATUS "Found LLVM: ${LLVM_INCLUDE_DIRS} ${LLVM_PACKAGE_VERSION}")
+ find_package(LibElf REQUIRED)
+
+ # clang is linked as a library, but the library path searching is
+--
+2.17.1
diff --git a/meta-oe/recipes-devtools/bcc/bcc_0.12.0.bb b/meta-oe/recipes-devtools/bcc/bcc_0.12.0.bb
new file mode 100644
index 0000000..687fb64
--- /dev/null
+++ b/meta-oe/recipes-devtools/bcc/bcc_0.12.0.bb
@@ -0,0 +1,37 @@
+SUMMARY = "BPF Compiler Collection (BCC)"
+HOMEPAGE = "https://github.com/iovisor/bcc"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE.txt;md5=e3fc50a88d0a364313df4b21ef20c29e"
+
+DEPENDS += "bison-native \
+            ninja-native \
+            elfutils-native \
+            flex-native \
+            ${MLPREFIX}elfutils \
+            ${MLPREFIX}binutils \
+            ${MLPREFIX}flex \
+            luajit \
+            clang \
+            "
+
+RDEPENDS_${PN} += "bash python"
+
+SRC_URI = "git://github.com/iovisor/bcc \
+           file://0001-Allow-to-build-with-OE-LLVM-cross-compiled-package.patch \
+           "
+SRCREV = "368a5b0714961953f3e3f61607fa16cb71449c1b"
+
+S = "${WORKDIR}/git"
+
+inherit cmake
+
+EXTRA_OECMAKE = " \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DENABLE_LLVM_SHARED=ON \
+    -DENABLE_CLANG_JIT=ON \
+    -DENABLE_MAN=OFF \
+    -DLLVM_PACKAGE_VERSION=${LLVMVERSION} \
+    -DPYTHON_CMD=python3 \
+"
+
+FILES_${PN} += "${libdir}/python*/dist-packages"

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