new easyblock for LLVM

easybuild/easyblocks/l/llvm.py

@@ -0,0 +1,80 @@
+##
+# Copyright 2020 Ghent University
+#
+# This file is part of EasyBuild,
+# originally created by the HPC team of Ghent University (http://ugent.be/hpc/en),
+# with support of Ghent University (http://ugent.be/hpc),
+# the Flemish Supercomputer Centre (VSC) (https://www.vscentrum.be),
+# Flemish Research Foundation (FWO) (http://www.fwo.be/en)
+# and the Department of Economy, Science and Innovation (EWI) (http://www.ewi-vlaanderen.be/en).
+#
+# https://github.com/easybuilders/easybuild
+#
+# EasyBuild is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation v2.
+#
+# EasyBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with EasyBuild.  If not, see <http://www.gnu.org/licenses/>.
+##
+"""
+EasyBuild support for building and installing LLVM, implemented as an easyblock
+
+@author: Simon Branford (University of Birmingham)
+"""
+from easybuild.easyblocks.clang import CLANG_TARGETS, DEFAULT_TARGETS_MAP
+from easybuild.easyblocks.generic.cmakemake import CMakeMake
+from easybuild.framework.easyconfig import CUSTOM
+from easybuild.tools.build_log import EasyBuildError
+from easybuild.tools.systemtools import get_cpu_architecture
+
+
+class EB_LLVM(CMakeMake):
+    """
+    Support for building and installing LLVM
+    """
+
+    @staticmethod
+    def extra_options():
+        extra_vars = CMakeMake.extra_options()
+        extra_vars.update({
+            'build_targets': [None, "Build targets for LLVM (host architecture if None). Possible values: " +
+                                    ', '.join(CLANG_TARGETS), CUSTOM],
+            'enable_rtti': [True, "Enable RTTI", CUSTOM],
+        })
+        return extra_vars
+
+    def configure_step(self):
+        """
+        Install extra tools in bin/ and enable zlib; optionally enable rtti; and set the build target
+        """
+        self.cfg.update('configopts', '-DLLVM_INSTALL_UTILS=ON')
+        self.cfg.update('configopts', '-DLLVM_ENABLE_ZLIB=ON')
+
+        if self.cfg["enable_rtti"]:
+            self.cfg.update('configopts', '-DLLVM_ENABLE_RTTI=ON')
+
+        build_targets = self.cfg['build_targets']
+        if build_targets is None:
+            arch = get_cpu_architecture()
+            default_targets = DEFAULT_TARGETS_MAP.get(arch, None)
+            if default_targets:
+                self.cfg['build_targets'] = build_targets = default_targets
+                self.log.debug("Using %s as default build targets for CPU architecture %s.", default_targets, arch)
+            else:
+                raise EasyBuildError("No default build targets defined for CPU architecture %s.", arch)
+
+        unknown_targets = [target for target in build_targets if target not in CLANG_TARGETS]
+
+        if unknown_targets:
+            raise EasyBuildError("Some of the chosen build targets (%s) are not in %s.",
+                                 ', '.join(unknown_targets), ', '.join(CLANG_TARGETS))
+
+        self.cfg.update('configopts', '-DLLVM_TARGETS_TO_BUILD="%s"' % ';'.join(build_targets))
+
+        super(EB_LLVM, self).configure_step()