crow: new package (#50009)

Co-authored-by: Tahmid A. Khan <60913202+tahmid-khan@users.noreply.github.com>

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

@@ -0,0 +1,53 @@
+# Copyright Spack Project Developers. See COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class Crow(CMakePackage):
+    """Crow is a C++ microframework for creating HTTP and WebSocket services.  It uses routing
+    similar to Python's Flask, which makes it easy to use.  It is also extremely fast, beating
+    many other C++ and non-C++ web frameworks."""
+
+    homepage = "https://crowcpp.org"
+    url = "https://github.com/CrowCpp/Crow/archive/refs/tags/v1.2.1.2.tar.gz"
+
+    maintainers("ta7mid")
+
+    license("BSD-3-Clause")
+
+    version("1.2.1.2", sha256="dc008515f64c9054250909a16bf0d9173af845d2c6d4e49ed6d3f0f32dfdc747")
+    version("1.2.0", sha256="c80d0b23c6a20f8aa6fe776669dc8a9fb984046891d2f70bfc0539d16998164b")
+
+    variant(
+        "asio",
+        default="standalone",
+        description="Asio variant to use: the non-boost Asio or Boost.Asio",
+        values=("standalone", "boost"),
+    )
+    variant(
+        "ssl",
+        default=False,
+        description="Enable support for HTTPS and encrypted WebSocket connections using OpenSSL",
+    )
+    variant(
+        "compression", default=False, description="Enable support for HTTP compression using zlib"
+    )
+
+    depends_on("c", type="build")
+    depends_on("cxx", type="build")
+
+    depends_on("asio", when="asio=standalone")
+    depends_on("boost+system+date_time", when="asio=boost")
+    depends_on("openssl", when="+ssl")
+    depends_on("zlib", when="+compression")
+
+    def cmake_args(self):
+        return [
+            self.define("CROW_BUILD_EXAMPLES", False),
+            self.define("CROW_BUILD_TESTS", False),
+            self.define("CROW_USE_BOOST", self.spec.satisfies("asio=boost")),
+            self.define_from_variant("CROW_ENABLE_SSL", "ssl"),
+            self.define_from_variant("CROW_ENABLE_COMPRESSION", "compression"),
+        ]