kealib: require GCC 6+

recipes/kealib/all/conanfile.py

@@ -5,6 +5,7 @@
 from conan.tools.build import check_min_cppstd
 from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
 from conan.tools.files import apply_conandata_patches, copy, export_conandata_patches, get, rmdir
+from conan.tools.scm import Version
 
 required_conan_version = ">=1.53.0"
 
@@ -28,6 +29,16 @@ class KealibConan(ConanFile):
         "fPIC": True,
     }
 
+    @property
+    def _min_cppstd(self):
+        return 11
+
+    @property
+    def _compilers_minimum_version(self):
+        return {
+            "gcc": "6",
+        }
+
     def export_sources(self):
         export_conandata_patches(self)
 
@@ -49,7 +60,12 @@ def requirements(self):
 
     def validate(self):
         if self.settings.compiler.cppstd:
-            check_min_cppstd(self, 11)
+            check_min_cppstd(self, self._min_cppstd)
+        minimum_version = self._compilers_minimum_version.get(str(self.settings.compiler), False)
+        if minimum_version and Version(self.settings.compiler.version) < minimum_version:
+            raise ConanInvalidConfiguration(
+                f"{self.ref} requires C++{self._min_cppstd}, which your compiler does not support."
+            )
         hdf5_opts = self.dependencies["hdf5"].options
         if not (hdf5_opts.enable_cxx and hdf5_opts.hl):
             raise ConanInvalidConfiguration("kealib requires hdf5 with cxx and hl enabled.")