Allowed to build html documentation without pdf documentation.

CMakeLists.txt

@@ -1702,8 +1702,12 @@ endif()
 status("")
 status("  Documentation:")
 status("    Sphinx:"              HAVE_SPHINX                                      THEN "${SPHINX_BUILD} (ver ${SPHINX_VERSION})" ELSE NO)
-status("    PdfLaTeX compiler:"   BUILD_DOCS AND PDFLATEX_COMPILER                 THEN "${PDFLATEX_COMPILER}" ELSE NO)
-status("    Build Documentation:" BUILD_DOCS AND PDFLATEX_COMPILER AND HAVE_SPHINX THEN YES ELSE NO)
+status("    PdfLaTeX compiler:"   PDFLATEX_COMPILER                 THEN "${PDFLATEX_COMPILER}" ELSE NO)
+if (BUILD_DOCS AND HAVE_SPHINX)
+    status("    Build Documentation:" PDFLATEX_COMPILER THEN YES ELSE "YES (HTML only)")
+else()
+    status("    Build Documentation:" NO)
+endif()
 
 # samples and tests
 status("")

doc/CMakeLists.txt

@@ -7,7 +7,7 @@ file(GLOB FILES_DOC_VS vidsurv/*.doc)
 file(GLOB FILES_TEX *.tex *.sty *.bib)
 file(GLOB FILES_TEX_PICS pics/*.png pics/*.jpg)
 
-if(BUILD_DOCS AND PDFLATEX_COMPILER AND HAVE_SPHINX)
+if(BUILD_DOCS AND HAVE_SPHINX)
 
 project(opencv_docs)
 
@@ -20,6 +20,7 @@ file(GLOB_RECURSE OPENCV_FILES_TUT_PICT tutorials/*.png tutorials/*.jpg)
 set(OPENCV_DOC_DEPS conf.py ${OPENCV_FILES_REF} ${OPENCV_FILES_REF_PICT}
           ${OPENCV_FILES_UG} ${OPENCV_FILES_TUT} ${OPENCV_FILES_TUT_PICT})
 
+if (PDFLATEX_COMPILER)
 add_custom_target(docs
                   ${SPHINX_BUILD}
                     -b latex -c ${CMAKE_CURRENT_SOURCE_DIR}
@@ -38,6 +39,8 @@ add_custom_target(docs
                   WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
                   COMMENT "Generating the PDF Manuals")
                   
+endif()
+
 add_custom_target(html_docs
                 ${SPHINX_BUILD}
                   -b html -c ${CMAKE_CURRENT_SOURCE_DIR}