feat: add build option to enable or disable docs targets

New option: ASAP_BUILD_DOCS. When ON, doxygen and sphinx targets will be
added and the detection of the required tools is done.

CMakeLists.txt

@@ -82,6 +82,7 @@ asap_push_project(${META_PROJECT_NAME})
 # cmake-format: off
 option(BUILD_SHARED_LIBS "Build shared instead of static libraries." ON)
 option(ASAP_BUILD_TESTS "Setup target to build and run tests." OFF)
+option(ASAP_BUILD_EXAMPLES "Setup target to build the examples." OFF)
 option(ASAP_BUILD_DOCS "Setup target to build the doxygen and sphinx docs." ON)
 option(ASAP_WITH_GOOGLE_ASAN "Instrument code with address sanitizer" OFF)
 option(ASAP_WITH_GOOGLE_UBSAN "Instrument code with undefined behavior sanitizer" OFF)
@@ -146,13 +147,15 @@ configure_file(.clangd.in ${CMAKE_SOURCE_DIR}/.clangd @ONLY)
 # Documentation - doxygen, sphinx/breathe/exhale
 # ------------------------------------------------------------------------------
 
-# Doxygen
-set(DOXYGEN_BUILD_DIR "${CMAKE_BINARY_DIR}/dox")
-include(DoxGeneration)
+if (ASAP_BUILD_DOCS)
+ # Doxygen
+ set(DOXYGEN_BUILD_DIR "${CMAKE_BINARY_DIR}/dox")
+ include(DoxGeneration)
 
-# Sphinx/breathe/exhale
-set(SPHINX_BUILD_DIR "${CMAKE_BINARY_DIR}/sphinx")
-include(SphinxGeneration)
+ # Sphinx/breathe/exhale
+ set(SPHINX_BUILD_DIR "${CMAKE_BINARY_DIR}/sphinx")
+ include(SphinxGeneration)
+endif()
 
 # ------------------------------------------------------------------------------
 # Testing