cmake: remove non-working externalproject detection

Author: scivision

.github/workflows/ci_linux.yml

@@ -3,10 +3,14 @@ name: ci_linux
 on:
   push:
     paths:
+      - "**.build"
+      - "**.txt"
       - "**.f90"
       - ".github/workflows/ci_linux.yml"
   pull_request:
     paths:
+      - "**.build"
+      - "**.txt"
       - "**.f90"
       - ".github/workflows/ci_linux.yml"
 

.github/workflows/ci_mac.yml

@@ -3,10 +3,14 @@ name: ci_mac
 on:
   push:
     paths:
+      - "**.build"
+      - "**.txt"
       - "**.f90"
       - ".github/workflows/ci_mac.yml"
   pull_request:
     paths:
+      - "**.build"
+      - "**.txt"
       - "**.f90"
       - ".github/workflows/ci_mac.yml"
 

CMakeLists.txt

@@ -16,9 +16,4 @@ include(cmake/hdf5.cmake)
 
 add_subdirectory(src)
 
-# skip tests if used as ExternalProject
-if(NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
-  return()
-endif()
-
 add_subdirectory(src/tests)