set option variables for dependencies as cache variables

Author: daantimmer

CMakeLists.txt

@@ -25,7 +25,7 @@ option(CCR_FETCH_DEPS "Fetch dependencies via FetchContent." On )
 option(CCR_BUILD_TESTS "Enable build of the tests" ${CCR_DEFAULTOPT})
 option(CCR_ENABLE_COVERAGE "Enable compiler flags for code coverage measurements" Off)
 
-set(BUILD_SHARED_LIBS OFF)
+set(BUILD_SHARED_LIBS  Off CACHE STRING "")
 
 add_compile_options(-fsanitize=address)
 add_link_options(-fsanitize=address)

external/jbeder/yaml-cpp/CMakeLists.txt

@@ -3,5 +3,7 @@ FetchContent_Declare(
   GIT_REPOSITORY https://github.com/jbeder/yaml-cpp.git
   GIT_TAG 2f86d13775d119edbb69af52e5f566fd65c6953b # Unreleased
 )
-set(YAML_ENABLE_PIC OFF)
+
+set(YAML_ENABLE_PIC OFF CACHE STRING "")
+
 FetchContent_MakeAvailable(yaml-cpp)

external/jupyter-xeus/cpp-terminal/CMakeLists.txt

@@ -11,9 +11,9 @@ add_compile_options(
     -Wno-unused-but-set-variable
 )
 
-set(CPPTERMINAL_BUILD_EXAMPLES Off)
-set(CPPTERMINAL_ENABLE_INSTALL Off)
-set(CPPTERMINAL_ENABLE_TESTING Off)
-set(CPPTERMINAL_ENABLE_DOCS Off)
+set(CPPTERMINAL_BUILD_EXAMPLES Off CACHE STRING "")
+set(CPPTERMINAL_ENABLE_INSTALL Off CACHE STRING "")
+set(CPPTERMINAL_ENABLE_TESTING Off CACHE STRING "")
+set(CPPTERMINAL_ENABLE_DOCS Off CACHE STRING "")
 
 FetchContent_MakeAvailable(cpp-terminal)