add justbuild package (#33689)

var/spack/repos/builtin/packages/justbuild/package.py

@@ -0,0 +1,82 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+import os
+
+from spack.package import *
+
+
+class Justbuild(Package):
+    "just, a generic build tool"
+
+    git = "https://github.com/just-buildsystem/justbuild.git"
+
+    homepage = "https://github.com/just-buildsystem/justbuild"
+
+    tags = ["build-tools"]
+
+    executables = ["^just$"]
+
+    maintainers = ["asartori86"]
+
+    version("master", branch="master")
+
+    depends_on("python@3:", type=("build", "run"))
+    depends_on("wget", type=("build", "run"))
+
+    sanity_check_is_file = [join_path("bin", "just"), join_path("bin", "just-mr")]
+
+    def setup_build_environment(self, env):
+        ar = which("ar")
+        if self.spec.satisfies("%gcc@10:"):
+            gcc = which("gcc")
+            gpp = which("g++")
+            env.set(
+                "JUST_BUILD_CONF",
+                "  {"
+                + '  "CC":"{0}"'.format(gcc.path)
+                + ', "CXX":"{0}"'.format(gpp.path)
+                + ', "AR":"{0}"'.format(ar.path)
+                + ', "COMPILER_FAMILY":"unknown"'
+                + ', "ENV":{'
+                + '    "PATH":"{0}"'.format(os.environ["PATH"])
+                + "   }"
+                + "}",
+            )
+        elif self.spec.satisfies("%clang@11:") or spec.satisfies("%apple-clang@11:"):
+            clang = which("clang")
+            clangpp = which("clang++")
+            env.set(
+                "JUST_BUILD_CONF",
+                "  {"
+                + '  "CC":"{0}"'.format(clang.path)
+                + ', "CXX":"{0}"'.format(clangpp.path)
+                + ', "AR":"{0}"'.format(ar.path)
+                + ', "COMPILER_FAMILY":"unknown"'
+                + ', "ENV":{'
+                + '    "PATH":"{0}"'.format(os.environ["PATH"])
+                + "   }"
+                + "}",
+            )
+        else:
+            raise InstallError("please use gcc >= 10 or clang >= 11")
+
+    def install(self, spec, prefix):
+        python = which("python3")
+        python(os.path.join("bin", "bootstrap.py"), ".", prefix)
+        mkdirp(prefix.bin)
+        install(os.path.join(prefix, "out", "bin", "just"), prefix.bin)
+        install(os.path.join("bin", "just-mr.py"), os.path.join(prefix.bin, "just-mr"))
+
+    @classmethod
+    def determine_version(cls, exe):
+        import json
+
+        try:
+            s = os.popen(exe + " version").read()
+            d = json.loads(s)
+            return ".".join(map(str, d["version"])) + d["suffix"].replace("~", "-")
+        except Exception:
+            return None