add +pic and +shared variants

see #13

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

@@ -12,15 +12,21 @@ class Cpr(CMakePackage):
     homepage = "https://docs.libcpr.org/"
     url = "https://github.com/libcpr/cpr/archive/refs/tags/1.10.4.tar.gz"
 
+    maintainers("prudhomm")
     license("MIT")
 
+    version("1.11.0", sha256="fdafa3e3a87448b5ddbd9c7a16e7276a78f28bbe84a3fc6edcfef85eca977784")
+    version("1.10.5", sha256="c8590568996cea918d7cf7ec6845d954b9b95ab2c4980b365f582a665dea08d8")
     version("1.10.4", sha256="88462d059cd3df22c4d39ae04483ed50dfd2c808b3effddb65ac3b9aa60b542d")
     version("1.9.2", sha256="3bfbffb22c51f322780d10d3ca8f79424190d7ac4b5ad6ad896de08dbd06bf31")
 
+    variant("pic", default=True, description="Position independent code")
+    variant("shared", default=True, description="Build shared library")
+
     depends_on("cxx", type="build")
 
     depends_on("curl")
-    depends_on("git", type="build")
+    depends_on("git", type="build")    
 
     def cmake_args(self):
         _force = "_FORCE" if self.spec.satisfies("@:1.9") else ""
@@ -29,4 +35,6 @@ def cmake_args(self):
             self.define("CPR_USE_SYSTEM_GTEST", True),
             self.define(f"CPR{_force}_USE_SYSTEM_CURL", True),
             self.define("CPR_ENABLE_SSL", True),
-        ]
+            self.define_from_variant("BUILD_SHARED_LIBS", "shared"),
+            self.define_from_variant("CMAKE_POSITION_INDEPENDENT_CODE", "pic"),
+        ]