3 files changed, 49 insertions, 25 deletions
diff --git a/cmake/check_reqs.cmake b/cmake/check_reqs.cmake
new file mode 100644
index 0000000..ad12ca7
--- /dev/null
+++ b/cmake/check_reqs.cmake
@@ -0,0 +1,12 @@
+set(HAVE_LIBSODIUM FALSE)
+
+get_property(nacl_required GLOBAL PROPERTY NACL_REQUIRED)
+if(${nacl_required})
+  if("${NACL_LIBRARIES}" STREQUAL "")
+    message(FATAL_ERROR "NaCl is not available, but a selected module needs it")
+  endif()
+
+  if(USE_LIBSODIUM)
+    set(HAVE_LIBSODIUM TRUE)
+  endif(USE_LIBSODIUM)
+endif(${nacl_required})
diff --git a/cmake/deps.cmake b/cmake/deps.cmake
index fa3cb03..c3936af 100644
--- a/cmake/deps.cmake
+++ b/cmake/deps.cmake
@@ -17,24 +17,30 @@ set(NACL_LIBRARIES "")
 set(NACL_LDFLAGS_OTHER "")
 
 if(USE_LIBSODIUM)
-  pkg_check_modules(SODIUM REQUIRED libsodium)
-
-  set(NACL_INCLUDE_DIRS "${SODIUM_INCLUDE_DIRS}")
-  foreach(dir "${SODIUM_INCLUDEDIR}" ${SODIUM_INCLUDE_DIRS})
-    list(APPEND NACL_INCLUDE_DIRS "${dir}/sodium")
-  endforeach(dir)
-
-  set(NACL_CFLAGS_OTHER "${SODIUM_CFLAGS_OTHER}")
-  set(NACL_LIBRARY_DIRS "${SODIUM_LIBRARY_DIRS}")
-  set(NACL_LIBRARIES "${SODIUM_LIBRARIES}")
-  set(NACL_LDFLAGS_OTHER "${SODIUM_LDFLAGS_OTHER}")
+  pkg_check_modules(SODIUM libsodium)
+
+  if(SODIUM_FOUND)
+    set(NACL_INCLUDE_DIRS "${SODIUM_INCLUDE_DIRS}")
+    foreach(dir "${SODIUM_INCLUDEDIR}" ${SODIUM_INCLUDE_DIRS})
+      list(APPEND NACL_INCLUDE_DIRS "${dir}/sodium")
+    endforeach(dir)
+
+    set(NACL_CFLAGS_OTHER "${SODIUM_CFLAGS_OTHER}")
+    set(NACL_LIBRARY_DIRS "${SODIUM_LIBRARY_DIRS}")
+    set(NACL_LIBRARIES "${SODIUM_LIBRARIES}")
+    set(NACL_LDFLAGS_OTHER "${SODIUM_LDFLAGS_OTHER}")
+  endif(SODIUM_FOUND)
 else(USE_LIBSODIUM)
-  find_package(NaCl REQUIRED)
+  find_package(NaCl)
 
-  set(NACL_INCLUDE_DIRS "${NACL_INCLUDE_DIR}")
-  set(NACL_LIBRARIES "${NACL_LIBRARY}")
+  if(NACL_FOUND)
+    set(NACL_INCLUDE_DIRS "${NACL_INCLUDE_DIR}")
+    set(NACL_LIBRARIES "${NACL_LIBRARY}")
+  endif(NACL_FOUND)
 endif(USE_LIBSODIUM)
 
+set_property(GLOBAL PROPERTY NACL_REQUIRED FALSE)
+
 
 if(WITH_CAPABILITIES)
   find_package(CAP REQUIRED)
diff --git a/cmake/fastd_module.cmake b/cmake/fastd_module.cmake
index d18719a..d1b6d3b 100644
--- a/cmake/fastd_module.cmake
+++ b/cmake/fastd_module.cmake
@@ -1,9 +1,13 @@
-function(fastd_module type enabled_var info name)
+macro(_fastd_module_handle_name)
   string(TOUPPER "${type}" TYPE)
 
   string(REPLACE - _ name_ "${name}")
   string(REPLACE " " _ name_ "${name_}")
   string(TOUPPER "${name_}" NAME)
+endmacro(_fastd_module_handle_name)
+
+function(fastd_module type enabled_var info name)
+  _fastd_module_handle_name()
 
   set(WITH_${TYPE}_${NAME} TRUE CACHE BOOL "Include the ${name} ${info}")
 
@@ -21,11 +25,7 @@ function(fastd_module type enabled_var info name)
 endfunction(fastd_module)
 
 function(fastd_module_include_directories type name)
-  string(TOUPPER "${type}" TYPE)
-
-  string(REPLACE - _ name_ "${name}")
-  string(REPLACE " " _ name_ "${name_}")
-  string(TOUPPER "${name_}" NAME)
+  _fastd_module_handle_name()
 
   if(WITH_${TYPE}_${NAME})
     target_include_directories(${type}_${name_} PRIVATE ${ARGN})
@@ -33,13 +33,19 @@ function(fastd_module_include_directories type name)
 endfunction(fastd_module_include_directories)
 
 function(fastd_module_link_libraries type name)
-  string(TOUPPER "${type}" TYPE)
-
-  string(REPLACE - _ name_ "${name}")
-  string(REPLACE " " _ name_ "${name_}")
-  string(TOUPPER "${name_}" NAME)
+  _fastd_module_handle_name()
 
   if(WITH_${TYPE}_${NAME})
     target_link_libraries(${type}_${name_} ${ARGN})
   endif(WITH_${TYPE}_${NAME})
 endfunction(fastd_module_link_libraries)
+
+function(fastd_module_require type name)
+  _fastd_module_handle_name()
+
+  if(WITH_${TYPE}_${NAME})
+    foreach(req ${ARGN})
+      set_property(GLOBAL PROPERTY ${req}_REQUIRED TRUE)
+    endforeach(req)
+  endif(WITH_${TYPE}_${NAME})
+endfunction(fastd_module_require)