[Buildroot] [PATCH v7 4/5] package/compiler-rt: new package

Matt Weber matthew.weber at rockwellcollins.com
Wed May 1 19:40:31 UTC 2019


This patch adds support for the compiler-rt (CLANG runtime) library.
It builds a set of static libraries and installs them into the
CLANG/LLVM toolchain resource folder.

Signed-off-by: Matthew Weber <matthew.weber at rockwellcollins.com>
Cc: Romain Naour <romain.naour at smile.fr>
Cc: Ricardo Martincoski <ricardo.martincoski at gmail.com>
Cc: Valentin Korenblit <valentinkorenblit at gmail.com>
---
Changes
v1 -> v2
[Romain
 - Removed unnecessary host-cmake dependency

v2 -> v3
[Romain
 - Update to use COMPILER_RT_INSTALL_PATH for library install
[Ricardo
 - Fixed check-package extra line
 - Spelling in commit message

v3 -> v4
[Valentin
 - Pointed out that non-glibc libraries won't build. Further
   investigation shows that the lib asan support in compiler-rt
   doesn't have the libc checks yet to support multiple libraries.
   (https://patchwork.ozlabs.org/patch/339938/ was the best example
    I could find and it doesn't look like anything has changed in the
    recent codebase)

v4 -> v5
[Thomas P
 - Revisited staging install step and found a cleaner way to use the
   default and then a hook to setup the runtime library path

v6
 - Bumped to 7.0.1 to match current LLVM/Clang version

v7
 - Rebased on master for 8.0 LLVM/Clang version
 - Added comment about bumping verions of LLVM/Clang and Compiler-rt
   together
[Romain
 - Disabled test cases (-DCOMPILER_RT_INCLUDE_TESTS=OFF)
---
 DEVELOPERS                           |  1 +
 package/Config.in                    |  1 +
 package/clang/clang.mk               |  2 +-
 package/compiler-rt/Config.in        | 14 +++++++++++
 package/compiler-rt/compiler-rt.hash |  3 +++
 package/compiler-rt/compiler-rt.mk   | 36 ++++++++++++++++++++++++++++
 package/llvm/llvm.mk                 |  2 +-
 7 files changed, 57 insertions(+), 2 deletions(-)
 create mode 100644 package/compiler-rt/Config.in
 create mode 100644 package/compiler-rt/compiler-rt.hash
 create mode 100644 package/compiler-rt/compiler-rt.mk

diff --git a/DEVELOPERS b/DEVELOPERS
index 6ccb0afaf6..72a635a81a 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1467,6 +1467,7 @@ F:	package/bridge-utils/
 F:	package/checkpolicy/
 F:	package/checksec/
 F:	package/cgroupfs-mount/
+F:	package/compiler-rt/
 F:	package/crda/
 F:	package/cunit/
 F:	package/dacapo/
diff --git a/package/Config.in b/package/Config.in
index f592e74a99..99fcf49a63 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -1652,6 +1652,7 @@ menu "Other"
 	source "package/clapack/Config.in"
 	source "package/classpath/Config.in"
 	source "package/cmocka/Config.in"
+	source "package/compiler-rt/Config.in"
 	source "package/cppcms/Config.in"
 	source "package/cracklib/Config.in"
 	source "package/dawgdic/Config.in"
diff --git a/package/clang/clang.mk b/package/clang/clang.mk
index 07e7fced2a..87a80ab258 100644
--- a/package/clang/clang.mk
+++ b/package/clang/clang.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-# LLVM and Clang should be version bumped together
+# LLVM, Compiler-rt and Clang should be version bumped together
 CLANG_VERSION = 8.0.0
 CLANG_SITE = http://llvm.org/releases/$(CLANG_VERSION)
 CLANG_SOURCE = cfe-$(CLANG_VERSION).src.tar.xz
diff --git a/package/compiler-rt/Config.in b/package/compiler-rt/Config.in
new file mode 100644
index 0000000000..9afc0d9d60
--- /dev/null
+++ b/package/compiler-rt/Config.in
@@ -0,0 +1,14 @@
+config BR2_PACKAGE_COMPILER_RT
+	bool "compiler-rt"
+	depends on BR2_PACKAGE_LLVM
+	depends on BR2_TOOLCHAIN_USES_GLIBC # asan lib requires
+	help
+	  A collection of runtime libraries primarily used by clang and
+	  llvm to provide builtins, sanitizer runtimes, and profiling
+	  at runtime.
+
+	  https://compiler-rt.llvm.org/
+
+comment "compiler-rt requires llvm to be enabled and a glibc toolchain"
+	depends on !BR2_PACKAGE_LLVM
+	depends on !BR2_TOOLCHAIN_USES_GLIBC
diff --git a/package/compiler-rt/compiler-rt.hash b/package/compiler-rt/compiler-rt.hash
new file mode 100644
index 0000000000..4b6bd1a75e
--- /dev/null
+++ b/package/compiler-rt/compiler-rt.hash
@@ -0,0 +1,3 @@
+# Locally computed:
+sha256 782edfc119ee172f169c91dd79f2c964fb6b248bd9b73523149030ed505bbe18  compiler-rt-7.0.1.src.tar.xz
+sha256 417541d990edb3f96327ac03cb67e52eac80fc5c3e7afc69213cd04d7c3b9b27  LICENSE.TXT
diff --git a/package/compiler-rt/compiler-rt.mk b/package/compiler-rt/compiler-rt.mk
new file mode 100644
index 0000000000..7eda3bc4fe
--- /dev/null
+++ b/package/compiler-rt/compiler-rt.mk
@@ -0,0 +1,36 @@
+################################################################################
+#
+# compiler-rt
+#
+################################################################################
+
+# Compiler-RT should be bumped together with LLVM and Clang as the run-time is
+# tied to the version of those tools
+COMPILER_RT_VERSION = 8.0.0
+COMPILER_RT_SOURCE = compiler-rt-$(COMPILER_RT_VERSION).src.tar.xz
+COMPILER_RT_SITE = http://llvm.org/releases/$(COMPILER_RT_VERSION)
+COMPILER_RT_LICENSE = NCSA MIT
+COMPILER_RT_LICENSE_FILES = LICENSE.TXT
+COMPILER_RT_DEPENDENCIES = host-clang llvm
+
+COMPILER_RT_INSTALL_STAGING = YES
+COMPILER_RT_INSTALL_TARGET = NO
+
+COMPILER_RT_CONF_OPTS=-DCOMPILER_RT_STANDALONE_BUILD=OFF \
+	-DCOMPILER_RT_STANDALONE_BUILD=ON \
+	-DCOMPILER_RT_DEFAULT_TARGET_TRIPLE=$(GNU_TARGET_NAME) \
+	-DLLVM_CONFIG_PATH=$(HOST_DIR)/usr/bin/llvm-config
+
+# The installation of the target runtime libraries defaults to DESTDIR, however
+# host-clang resources directory needs a link so Clang can find the runtime
+# libraries in the same location they would be if built as part of the Clang
+# build. The "resources" directory is loosely documented and seems to be
+# assumed, as compiler-rt is usually build at the same time as Clang and not
+# standalone.
+define COMPILER_RT_SETUP_RUNTIME_LIBS
+	mkdir -p $(HOST_DIR)/lib/clang/$(HOST_CLANG_VERSION)/lib
+	ln -sf ../../../../$(GNU_TARGET_NAME)/sysroot/usr/lib/linux $(HOST_DIR)/lib/clang/$(HOST_CLANG_VERSION)/lib/linux
+endef
+COMPILER_RT_POST_INSTALL_STAGING_HOOKS += COMPILER_RT_SETUP_RUNTIME_LIBS
+
+$(eval $(cmake-package))
diff --git a/package/llvm/llvm.mk b/package/llvm/llvm.mk
index 9d276c5190..cd07860068 100644
--- a/package/llvm/llvm.mk
+++ b/package/llvm/llvm.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-# LLVM and Clang should be version bumped together
+# LLVM, Compiler-rt and Clang should be version bumped together
 LLVM_VERSION = 8.0.0
 LLVM_SITE = http://llvm.org/releases/$(LLVM_VERSION)
 LLVM_SOURCE = llvm-$(LLVM_VERSION).src.tar.xz
-- 
2.17.1



More information about the buildroot mailing list