ENH: Add option to disable the server side searching

This enables github pages and local html to server the index for the
client to search.

Author: blowekamp

Utilities/Doxygen/CMakeLists.txt

@@ -53,6 +53,8 @@ cmake_dependent_option( ITK_DOXYGEN_LATEX "Doxygen will generate LaTeX output" O
 cmake_dependent_option( ITK_DOXYGEN_RTF "Doxygen will generate RTF output optimized for Word 97" OFF "ITK_BUILD_DOCUMENTATION" OFF)
 cmake_dependent_option( ITK_DOXYGEN_XML "Doxygen will generate XML output" OFF "ITK_BUILD_DOCUMENTATION" OFF)
 
+cmake_dependent_option( ITK_DOXYGEN_SERVER_BASED_SEARCH "Doxygen HTML will use PHP server based search." ON ITK_DOXYGEN_HTML OFF)
+
 mark_as_advanced( ITK_DOXYGEN_HTML
   ITK_DOXYGEN_DOCSET
   ITK_DOXYGEN_CHM
@@ -61,7 +63,8 @@ mark_as_advanced( ITK_DOXYGEN_HTML
   ITK_DOXYGEN_LATEX
   ITK_DOXYGEN_RTF
   ITK_DOXYGEN_XML
-)
+  ITK_DOXYGEN_SERVER_BASED_SEARCH
+  )
 
 find_package( Perl )
 

Utilities/Doxygen/DoxygenConfig.cmake

@@ -74,7 +74,11 @@ set(DOXYGEN_ECLIPSE_DOC_ID "org.itk.ITK")
 set(DOXYGEN_ENUM_VALUES_PER_LINE "1")
 set(DOXYGEN_USE_MATHJAX "YES")
 set(DOXYGEN_MATHJAX_RELPATH "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/")
-set(DOXYGEN_SERVER_BASED_SEARCH "YES")
+if (ITK_DOXYGEN_SERVER_BASED_SEARCH)
+  set(DOXYGEN_SERVER_BASED_SEARCH "YES")
+else()
+  set(DOXYGEN_SERVER_BASED_SEARCH "NO")
+endif()
 set(DOXYGEN_LATEX_CMD_NAME "latex")
 set(DOXYGEN_PAPER_TYPE "letter")
 set(DOXYGEN_EXTRA_PACKAGES "amsmath" "amsfonts")