Draft: Eisvogel integration

This doesn't do anything yet, but demonstrates linking against, and calling into, the Eisvogel radio signal calculator.

Goes along with its mirror image at https://github.com/eisvogel-project/Eisvogel/pull/33

Please ignore for now until more interesting things happen here (opening the PR just so that we have a place for discussion, and to get a link).

applications/CMakeLists.txt

@@ -13,3 +13,24 @@ endif()
 install (
   TARGETS c8_air_shower DESTINATION bin
 )
+
+# -------------------------------------------------------------------------
+# To have `cmake` pick up the Eisvogel installation
+# export PKG_CONFIG_PATH=/path/to/eisvogel-install/pkgconfig:${PKG_CONFIG_PATH}
+
+find_package(PkgConfig REQUIRED) 
+pkg_check_modules(EISVOGEL REQUIRED IMPORTED_TARGET eisvogel-corsika)
+
+add_executable (c8_ice_shower c8_ice_shower.cpp)
+target_link_libraries (c8_ice_shower CORSIKA8 PkgConfig::EISVOGEL)
+
+install (
+  TARGETS c8_ice_shower DESTINATION bin
+)
+
+add_executable (c8_air_ice_shower c8_air_ice_shower.cpp)
+target_link_libraries (c8_air_ice_shower CORSIKA8 PkgConfig::EISVOGEL)
+
+install (
+  TARGETS c8_air_ice_shower DESTINATION bin
+)