Merge pull request #5729 from rudi-c/build_docs_and_fixes

Build docs and dependency fixes

BUILD.md

@@ -53,6 +53,8 @@ Create a build directory in the root of your checkout and then run the CMake bui
     cd build
     cmake ..
 
+If cmake gives you the same error message repeatedly after the build fails (e.g. you had a typo in the QT_CMAKE_PREFIX_PATH that you fixed but the `.cmake` files still cannot be found), try removing `CMakeCache.txt`.
+
 ####Variables
 Any variables that need to be set for CMake to find dependencies can be set as ENV variables in your shell profile, or passed directly to CMake with a `-D` flag appended to the `cmake ..` command.
 

BUILD_LINUX.md

@@ -1,6 +1,6 @@
-Please read the [general build guide](BUILD.md) for information on dependencies required for all platforms. Only Linux specific instructions are found in this file. 
+Please read the [general build guide](BUILD.md) for information on dependencies required for all platforms. Only Linux specific instructions are found in this file.
 
 ###Qt5 Dependencies
 Should you choose not to install Qt5 via a package manager that handles dependencies for you, you may be missing some Qt5 dependencies. On Ubuntu, for example, the following additional packages are required:
 
-    libasound2 libxmu-dev libxi-dev freeglut3-dev libasound2-dev libjack-dev libxrandr-dev
+    libasound2 libxmu-dev libxi-dev freeglut3-dev libasound2-dev libjack0 libjack-dev libxrandr-dev libudev-dev

assignment-client/CMakeLists.txt

@@ -13,10 +13,6 @@ link_hifi_libraries(
   physics
 )
 
-if (UNIX)
-  target_link_libraries(${TARGET_NAME} ${CMAKE_DL_LIBS})
-endif (UNIX)
-
 include_application_version()
 
 copy_dlls_beside_windows_executable()

domain-server/CMakeLists.txt

@@ -31,5 +31,10 @@ include_directories(SYSTEM "${OPENSSL_INCLUDE_DIR}")
 # append OpenSSL to our list of libraries to link
 target_link_libraries(${TARGET_NAME} ${OPENSSL_LIBRARIES})
 
+# libcrypto uses dlopen in libdl
+if (UNIX)
+  target_link_libraries(${TARGET_NAME} ${CMAKE_DL_LIBS})
+endif (UNIX)
+
 include_application_version()
 copy_dlls_beside_windows_executable()

libraries/networking/CMakeLists.txt

@@ -27,6 +27,11 @@ include_directories(SYSTEM "${OPENSSL_INCLUDE_DIR}")
 # append OpenSSL to our list of libraries to link
 target_link_libraries(${TARGET_NAME} ${OPENSSL_LIBRARIES} ${TBB_LIBRARIES})
 
+# libcrypto uses dlopen in libdl
+if (UNIX)
+  target_link_libraries(${TARGET_NAME} ${CMAKE_DL_LIBS})
+endif (UNIX)
+
 # append tbb includes to our list of includes to bubble
 target_include_directories(${TARGET_NAME} SYSTEM PUBLIC ${TBB_INCLUDE_DIRS})
 include_application_version()