1 files changed, 82 insertions, 0 deletions

diff --git a/project/cmake/scripts/common/addoptions.cmake b/project/cmake/scripts/common/addoptions.cmake
new file mode 100644
index 0000000..0ebb823
--- /dev/null
+++ b/project/cmake/scripts/common/addoptions.cmake
@@ -0,0 +1,82 @@
+# - Add options without repeating them on the command line
+#
+# Synopsis:
+#
+#       add_options (lang build opts)
+#
+# where:
+#
+#       lang       Name of the language whose compiler should receive the
+#                  options, e.g. CXX. If a comma-separated list is received
+#                  then the option is added for all those languages. Use the
+#                  special value ALL_LANGUAGES for these languages: CXX, C
+#                  and Fortran
+#
+#       build      Kind of build to which this options should apply,
+#              such as DEBUG and RELEASE. This can also be a comma-
+#                  separated list. Use the special value ALL_BUILDS to apply
+#                  to all builds.
+#
+#       opts       List of options to add. Each should be quoted.
+#
+# Example:
+#
+#       add_options (CXX RELEASE "-O3" "-DNDEBUG" "-Wall")
+
+function (add_options langs builds)
+  # special handling of empty language specification
+  if ("${langs}" STREQUAL "ALL_LANGUAGES")
+        set (langs CXX C Fortran)
+  endif ("${langs}" STREQUAL "ALL_LANGUAGES")
+  foreach (lang IN LISTS langs)
+        # prepend underscore if necessary
+        foreach (build IN LISTS builds)
+          if (NOT ("${build}" STREQUAL "ALL_BUILDS"))
+                set (_bld "_${build}")
+                string (TOUPPER "${_bld}" _bld)
+          else (NOT ("${build}" STREQUAL "ALL_BUILDS"))
+                set (_bld "")
+          endif (NOT ("${build}" STREQUAL "ALL_BUILDS"))
+          foreach (_opt IN LISTS ARGN)
+                set (_var "CMAKE_${lang}_FLAGS${_bld}")
+                #message (STATUS "Adding \"${_opt}\" to \${${_var}}")
+                # remove it first
+                string (REPLACE "${_opt}" "" _without "${${_var}}")
+                string (STRIP "${_without}" _without)
+                # we need to strip this one as well, so they are comparable
+                string (STRIP "${${_var}}" _stripped)
+                # if it wasn't there, then add it at the end
+                if ("${_without}" STREQUAL "${_stripped}")
+                  # don't add any extra spaces if no options yet are set
+                  if (NOT ${_stripped} STREQUAL "")
+                        set (${_var} "${_stripped} ${_opt}")
+                  else (NOT ${_stripped} STREQUAL "")
+                        set (${_var} "${_opt}")
+                  endif (NOT ${_stripped} STREQUAL "")
+                  set (${_var} "${${_var}}" PARENT_SCOPE)
+                endif ("${_without}" STREQUAL "${_stripped}")
+          endforeach (_opt)
+        endforeach (build)
+  endforeach (lang)
+endfunction (add_options lang build)
+
+# set varname to flag unless user has specified something that matches regex
+function (set_default_option varname flag regex)
+  if (NOT "$ENV{CXXFLAGS}" MATCHES "${regex}"
+          AND NOT "${CMAKE_CXX_FLAGS}" MATCHES "${regex}"
+          AND NOT "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}}" MATCHES "${regex}")
+        set (${varname} ${flag} PARENT_SCOPE)
+  else (NOT "$ENV{CXXFLAGS}" MATCHES "${regex}"
+          AND NOT "${CMAKE_CXX_FLAGS}" MATCHES "${regex}"
+          AND NOT "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}}" MATCHES "${regex}")
+        set (${varname} PARENT_SCOPE)
+  endif (NOT "$ENV{CXXFLAGS}" MATCHES "${regex}"
+        AND NOT "${CMAKE_CXX_FLAGS}" MATCHES "${regex}"
+        AND NOT "${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}}" MATCHES "${regex}")
+endfunction (set_default_option)
+
+# note: this must be called before project()
+macro (no_default_options)
+  # prevent the platform probe to set options
+  set (CMAKE_NOT_USING_CONFIG_FLAGS TRUE)
+endmacro (no_default_options)