Adding upstream version 2:20.4+dfsg.upstream/2%20.4+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/cmake/scripts/common/DependencyOptions.cmake b/cmake/scripts/common/DependencyOptions.cmake
new file mode 100644
index 0000000..a45dcec
--- /dev/null
+++ b/cmake/scripts/common/DependencyOptions.cmake
@@ -0,0 +1,23 @@
+# Set Option varname based on USE_INTERNAL_LIBS status
+#
+# Alternative to cmake_dependent_option
+# cmake_dependent_option is restrictive, in the fact that we cannot override the 
+# set option value as a cache variable (-Dvar=foo)
+#
+# This allows us to have the same outcome as cmake_dependent_option whilst still allowing
+# user to override for platforms that would normally be forced ON
+#
+function(dependent_option varname optionmessage)
+
+  # If varname already set, accept that, as it was provided by the user
+  if(NOT DEFINED ${varname})
+    # Generally we only define USE_INTERNAL_LIBS as the exception for platforms
+    # we explicitly dont want to build internal libs (eg Linux/Freebsd)
+    if(NOT DEFINED USE_INTERNAL_LIBS)
+      option(${varname} ${optionmessage} ON)
+    else()
+      # Respect Value of USE_INTERNAL_LIBS for ON/OFF
+      option(${varname} ${optionmessage} ${USE_INTERNAL_LIBS})
+    endif()
+  endif()
+endfunction()