diff mbox series

[v5,4/7] package/clang: new package

Message ID 20180404163124.27934-5-valentin.korenblit@smile.fr
State Changes Requested
Headers show
Series llvm for mesa3d | expand

Commit Message

Valentin Korenblit April 4, 2018, 4:31 p.m. UTC 
This patch provides Clang tools and libraries for the host and libclang
for the target.

Clang is needed to build libclc, which is also provided in a follup patch.

We need libclang for the target because it is used by most of OpenCL implementations.

A later patch in this series will enable Clover, the OpenCl implementation part
of Mesa3D, which requires libclang.

clang-tblgen must be copied to HOST_DIR as it is not installed by default but is needed
for cross-compilation: http://lists.llvm.org/pipermail/cfe-dev/2015-June/043318.html

Signed-off-by: Valentin Korenblit <valentin.korenblit@smile.fr>
---
 DEVELOPERS               |  1 +
 package/Config.in        |  1 +
 package/clang/Config.in  |  9 ++++++
 package/clang/clang.hash |  3 ++
 package/clang/clang.mk   | 71 ++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 85 insertions(+)
 create mode 100644 package/clang/Config.in
 create mode 100644 package/clang/clang.hash
 create mode 100644 package/clang/clang.mk

Comments

Matt Weber April 5, 2018, 7:36 p.m. UTC | #1 
All,

On Wed, Apr 4, 2018 at 11:31 AM, Valentin Korenblit
<valentin.korenblit@smile.fr> wrote:
> This patch provides Clang tools and libraries for the host and libclang
> for the target.
>
> Clang is needed to build libclc, which is also provided in a follup patch.
>

Unsure of interest but we've been looking at using this concept below
which depends on clang.  I'm still working on completing what the
integration looks like with the additional clang libraries but thanks
again for sending this patchset out!

https://github.com/google/fuzzer-test-suite/blob/master/tutorial/libFuzzerTutorial.md
diff mbox series

Patch

diff --git a/DEVELOPERS b/DEVELOPERS
index 78be8256bc..72303992c2 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1888,6 +1888,7 @@  F:	package/dropwatch/
 F:	package/tstools/
 
 N:	Valentin Korenblit <valentin.korenblit@smile.fr>
+F:	package/clang/
 F:	package/llvm/
 
 N:	Vanya Sergeev <vsergeev@gmail.com>
diff --git a/package/Config.in b/package/Config.in
index 82c5c40531..b358e39c3f 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -1479,6 +1479,7 @@  menu "Other"
 	source "package/bctoolbox/Config.in"
 	source "package/bdwgc/Config.in"
 	source "package/boost/Config.in"
+	source "package/clang/Config.in"
 	source "package/clapack/Config.in"
 	source "package/classpath/Config.in"
 	source "package/cppcms/Config.in"
diff --git a/package/clang/Config.in b/package/clang/Config.in
new file mode 100644
index 0000000000..269766da1e
--- /dev/null
+++ b/package/clang/Config.in
@@ -0,0 +1,9 @@ 
+config BR2_PACKAGE_CLANG
+	bool "clang"
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
+	select BR2_PACKAGE_LLVM
+	help
+	  Clang is a C/C++, Objective C/C++ and OpenCL C front-end
+	  for the LLVM compiler.
+
+	  http://clang.llvm.org
diff --git a/package/clang/clang.hash b/package/clang/clang.hash
new file mode 100644
index 0000000000..a5bf909814
--- /dev/null
+++ b/package/clang/clang.hash
@@ -0,0 +1,3 @@ 
+# locally calculated
+sha256 135f6c9b0cd2da1aff2250e065946258eb699777888df39ca5a5b4fe5e23d0ff cfe-5.0.1.src.tar.xz
+sha256 de4c79665f0f5688b0ace17cba6f8e0343925bb95e0949d66d47bbd4527310d6 LICENSE.TXT
diff --git a/package/clang/clang.mk b/package/clang/clang.mk
new file mode 100644
index 0000000000..7535782436
--- /dev/null
+++ b/package/clang/clang.mk
@@ -0,0 +1,71 @@ 
+################################################################################
+#
+# clang
+#
+################################################################################
+
+CLANG_VERSION = 5.0.1
+CLANG_SITE = http://llvm.org/releases/$(CLANG_VERSION)
+CLANG_SOURCE = cfe-$(CLANG_VERSION).src.tar.xz
+CLANG_LICENSE = NCSA
+CLANG_LICENSE_FILES = LICENSE.TXT
+CLANG_SUPPORTS_IN_SOURCE_BUILD = NO
+CLANG_INSTALL_STAGING = YES
+
+HOST_CLANG_DEPENDENCIES = host-llvm host-libxml2
+CLANG_DEPENDENCIES = llvm host-clang
+
+# This option is needed. Otherwise multiple shared libs (libclangAST.so,
+# libclangBasic.so, libclangFrontend.so, etc.) will be generated. As a final
+# shared lib containing all these components (libclang.so) is also generated, this
+# resulted in the following error when trying to use tools that use libclang:
+# $ CommandLine Error: Option 'track-memory' registered more than once!
+# $ LLVM ERROR: inconsistency in registered CommandLine options
+# By setting BUILD_SHARED_LIBS to OFF, we generate multiple static libraries
+# (the same way as host's clang build) and finally libclang.so to be installed on the
+# target.
+CLANG_CONF_OPTS += -DBUILD_SHARED_LIBS=OFF
+
+# Default is Debug build, which requires considerably more disk space and
+# build time. Release build is selected for host and target because the linker
+# can run out of memory in Debug mode.
+HOST_CLANG_CONF_OPTS += -DCMAKE_BUILD_TYPE=Release
+CLANG_CONF_OPTS += -DCMAKE_BUILD_TYPE=Release
+
+CLANG_CONF_OPTS += -DCMAKE_CROSSCOMPILING=1
+
+# We need to build tools because libclang is a tool
+HOST_CLANG_CONF_OPTS += -DCLANG_BUILD_TOOLS=ON
+CLANG_CONF_OPTS += -DCLANG_BUILD_TOOLS=ON
+
+HOST_CLANG_CONF_OPTS += \
+	-DCLANG_BUILD_EXAMPLES=OFF \
+	-DCLANG_INCLUDE_DOCS=OFF \
+	-DCLANG_INCLUDE_TESTS=OFF
+
+CLANG_CONF_OPTS += \
+	-DCLANG_BUILD_EXAMPLES=OFF \
+	-DCLANG_INCLUDE_DOCS=OFF \
+	-DCLANG_INCLUDE_TESTS=OFF
+
+HOST_CLANG_CONF_OPTS += -DLLVM_CONFIG:FILEPATH=$(HOST_DIR)/bin/llvm-config
+CLANG_CONF_OPTS += -DLLVM_CONFIG:FILEPATH=$(STAGING_DIR)/usr/bin/llvm-config \
+	-DCLANG_TABLEGEN:FILEPATH=$(HOST_DIR)/usr/bin/clang-tblgen
+
+# Clang can't be used as compiler on the target since there are no development files
+# (headers) and other build tools. So remove clang binaries from target.
+define CLANG_DELETE_BINARIES_FROM_TARGET
+	rm -f $(TARGET_DIR)/usr/bin/clang*
+endef
+CLANG_POST_INSTALL_TARGET_HOOKS += CLANG_DELETE_BINARIES_FROM_TARGET
+
+# clang-tblgen is not installed by default, however it is necessary for
+# cross-compiling clang
+define HOST_CLANG_INSTALL_CLANG_TBLGEN
+	$(INSTALL) -D -m 0755 $(HOST_CLANG_BUILDDIR)/bin/clang-tblgen \
+		$(HOST_DIR)/usr/bin/clang-tblgen
+endef
+HOST_CLANG_POST_INSTALL_HOOKS = HOST_CLANG_INSTALL_CLANG_TBLGEN
+
+$(eval $(cmake-package))
+$(eval $(host-cmake-package))