Moving so3 to conan-center

Author: mdavezac

.github/workflows/conan.yml

@@ -11,30 +11,44 @@ option(conan_deps "Download ssht using conan" ON)
 if(NOT WIN32)
   option(fPIC "Enable position independent code" ON)
 endif()
+if(conan_deps AND download_ssht)
+  message(
+    FATAL_ERROR "conan_deps and download_ssht options are mutually exclusive.")
+endif()
 
 if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE "Debug")
 endif()
 
-list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
-if(conan_deps)
-  include("conan_dependencies")
-  set(SSHT_TARGET CONAN_PKG::ssht)
+if(tests)
+  enable_testing()
+endif()
+if(conan_deps OR CONAN_EDITABLE_MODE)
+  include("${PROJECT_SOURCE_DIR}/cmake/conan_dependencies.cmake")
+endif()
+if(EXISTS "${PROJECT_BINARY_DIR}/conan_paths.cmake")
+  include("${PROJECT_BINARY_DIR}/conan_paths.cmake")
+elseif(EXISTS "${PROJECT_BINARY_DIR}/FindFFTW3.cmake")
+  list(APPEND CMAKE_MODULE_PATH "${PROJECT_BINARY_DIR}")
 else()
-  find_package(Ssht REQUIRED)
-  set(SSHT_TARGET ssht)
+  list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
+endif()
+find_package(ssht REQUIRED)
+if(ssht_FOUND AND NOT TARGET ssht::ssht)
+  message(FATAL_ERROR "NOT FOUND ${SSHT_LIBRARIES}")
 endif()
+find_package(FFTW3 REQUIRED)
+find_library(MATH_LIBRARY m)
 
 add_subdirectory(src/c)
 if(tests)
-  enable_testing()
-  include("fetch_cmocka")
+  include("${PROJECT_SOURCE_DIR}/cmake/fetch_cmocka.cmake")
   add_subdirectory(tests)
 endif()
 
-if(NOT SKBUILD)
-  include("exporting")
-else()
+if(NOT SKBUILD AND NOT CONAN_EXPORTED)
+  include("${PROJECT_SOURCE_DIR}/cmake/exporting.cmake")
+elseif(NOT CONAN_EXPORTED)
   find_package(PythonExtensions REQUIRED)
   find_package(Cython REQUIRED)
   find_package(NumPy REQUIRED)