initial support of clang based front end clang2whirl. Refer osprey/clang2whirl/README.md for instructions to build and use clang front end.

Author: jianxin.lai

HOWTO-INSTALL-OPEN64

@@ -29,7 +29,8 @@ In order to compile Open64 successfully, you should meet the following
 requirements:
 
     * Linux based OS
-      Currently, Open64 is intensively tested on Linux on IA64/X86_64/IA32.
+      Currently, Open64 is intensively tested on Linux on IA64/X86_64/IA32. The
+      recommended OS is Ubuntu 16.04 LTS.
 
     * IA32/x86_64/IA64 based machine
       In this release, Open64 is supported and tested for the Itanium 2 and
@@ -42,10 +43,8 @@ requirements:
       Makefile.
 
     * GCC (GNU Compiler Collection)
-      In order to compile the Open64 source code, you need GCC 3.3.x - 4.2.x.
-      Support for GCC 2.x has been dropped since release 1.0. If you don't have
-      any of the suggested GCC versions above, we recommend that you to install
-      GCC 4.1.x.
+      In order to compile the Open64 source code, you need GCC 5.x - 7.x. The
+      recommended GCC version is GCC 5.4.0 available on Ubuntu 16.04 LTS.
 
 
 Obtaining the Source Code
@@ -56,25 +55,25 @@ To compile Open64 you need to obtain the source code first.
 There are two ways:
 
     * Obtain the Source Code as Archive
-      You can download the source code from Sourceforge.net
-      You will find the links to the different versions in our download section.
-      (http://www.open64.net/download.html)
+      You can download the source code from github.com. You can download
+      different versions from github.com. The master zip file is available
+      at:
+        https://github.com/open64-compiler/open64/archive/master.zip
 
-      Extract the source code and the prebuild binaries/libraries
+      Extract the source code:
 
-        tar xzf open64-4.2.tar.gz
+        unzip master.zip
 
     * Obtain the Source Code from our Subversion Repository
       You can also obtain the latest version of our source code from the sub-
       version repository.
       To get the latest version issue the following command:
 
-        svn export https://svn.open64.net/svnroot/open64/trunk open64
+        git clone https://github.com/open64-compiler/open64.git open64
 
       This will copy the latest code to the directory open64.
 
-      You can also surf through our subversion repository online.
-      (http://svn.open64.net)
+      You can also surf through the git repository online on github.com.
 
 Compiling
 ---------
@@ -85,6 +84,9 @@ necessary to set variables on the make command to control the build;
 MACHINE_TYPE, BUILD_OPTIMIZE, and TOOLROOT arguments were passed to the
 make command to control what type of open64 compiler to build.
 
+To build open64 with CLANG front end, please check and follow the instructions
+available in osprey/clang2whirl/README.md.
+
 In the new build process, these arguments are passed to the configure
 script (using a different syntax) and then the 'make all' and 'make
 install' commands are run without any arguments.

Makefile.in

@@ -130,6 +130,7 @@ endif
 
 GNU4_FE_COMPONENTS = \
                 $(NATIVE_BUILD_DIR)/wgen/wgen42 \
+                $(NATIVE_BUILD_DIR)/clang2whirl/clangfe \
                 $(GNUFE_BUILD_SUBDIR)/gcc/cc1 \
                 $(GNUFE_BUILD_SUBDIR)/gcc/cc1plus
 
@@ -236,6 +237,9 @@ $(NATIVE_BUILD_DIR)/g++fe/gfecc gfecc: libiberty libcomutil libcmplrs
 $(NATIVE_BUILD_DIR)/wgen/wgen42 wgen42: libiberty libcomutil libcmplrs $(NATIVE_BUILD_DIR)/libspin_4_2_0/libgspin42.a
 	$(MAKE) -C $(NATIVE_BUILD_DIR)/wgen
 
+$(NATIVE_BUILD_DIR)/clang2whirl/clangfe clangfe: include libiberty libcomutil libcmplrs
+	$(MAKE) -C $(NATIVE_BUILD_DIR)/clang2whirl
+
 ifeq ($(BUILD_TYPE), SHARED)
 
 $(NATIVE_BUILD_DIR)/be/be be: be.so 
@@ -436,6 +440,7 @@ clobber: clean
 clean: $(CLEAN_LIB)
 	$(MAKE) -C $(NATIVE_BUILD_DIR)/driver clobber 
 	$(MAKE) -C $(NATIVE_BUILD_DIR)/wgen clobber 
+	$(MAKE) -C $(NATIVE_BUILD_DIR)/clang2whirl clobber
 ifeq ($(BUILD_GNU3), YES)
 	$(MAKE) -C $(NATIVE_BUILD_DIR)/gccfe clobber 
 	$(MAKE) -C $(NATIVE_BUILD_DIR)/g++fe clobber

README

@@ -9,13 +9,12 @@ that objects produced by the Open64 compilers can link with objects
 produced by other ABI compliant compilers.
 
 The latest information and updates for the Open64 compilers will
-eventually be found at http://www.open64.net. The latest code in 
-development can be obtained via SVN at http://svn.open64.net. 
-The downloadable packages of sources or binaries can be found at
-http://www.sf.net/projects/open64.
+eventually be found at https://github.com/open64-compiler/open64. The
+latest code in development can be obtained via GIT at:
+https://github.com/open64-compiler/open64
 
 Please send problem reports to the mailing list described to the
-BugZilla system at https://bugs.open64.net
+BugZilla system at https://github.com/open64-compiler/open64
 
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