chore: update linux building docs. Invert logic to prefer building with system dependencies

Author: Julusian

BUILDING.md

@@ -79,17 +79,22 @@ Before beginning, check the build options section below, to decide if you want t
 1. `git clone --single-branch --branch master https://github.com/CasparCG/server casparcg-server-master`
 2. `cd casparcg-server-master`
 3. Install dependencies, this can be done with `sudo ./tools/linux/install-dependencies`
-4. `mkdir build && cd build`
-5. `cmake ../src`
-6. If not using system ffmpeg, run `./_deps/ffmpeg-lib-src/ffmpeg/install-ffmpeg-dependencies` to install the dependencies needed by the ffmpeg build
-7. `make -j8`
+4. If not using system ffmpeg, run `./_deps/ffmpeg-lib-src/ffmpeg/install-ffmpeg-dependencies` to install the dependencies needed by the ffmpeg build
+5. If using system CEF, `sudo add-apt-repository ppa:casparcg/ppa` and `sudo apt-get install casparcg-cef-131-dev`
+6. `mkdir build && cd build`
+7. `cmake ../src`
+8. `make -j8`
 
 If all goes to plan, a folder called 'staging' has been created with everything you need to run CasparCG server.
 
 ## Build options
 
 -DENABLE_HTML=OFF - useful if you lack CEF, and would like to build without that module.
 
--DUSE_STATIC_BOOST=OFF - (Linux only) link against shared version of Boost.
+-DUSE_STATIC_BOOST=ON - (Linux only, default OFF) statically link against Boost.
 
--DUSE_SYSTEM_FFMPEG - (Linux only) use the version of ffmpeg from your OS.
+-DUSE_SYSTEM_FFMPEG=OFF - (Linux only, default ON) use the version of ffmpeg from your OS.
+
+-DUSE_SYSTEM_CEF=OFF - (Linux only, default ON) use the version of CEF from your OS. This expects to be using builds from https://launchpad.net/~casparcg/+archive/ubuntu/ppa
+
+-DDIAG_FONT_PATH - Specify an alternate path/font to use for the DIAG window. On linux, this will often want to be set to an absolute path of a font

src/CMakeModules/Bootstrap_Linux.cmake

@@ -12,8 +12,9 @@ if(POLICY CMP0167)
 endif()
 
 set(ENABLE_HTML ON CACHE BOOL "Enable CEF and HTML producer")
-set(USE_STATIC_BOOST ON CACHE BOOL "Use shared library version of Boost")
-set(USE_SYSTEM_FFMPEG OFF CACHE BOOL "Use the version of ffmpeg from your OS")
+set(USE_STATIC_BOOST OFF CACHE BOOL "Use shared library version of Boost")
+set(USE_SYSTEM_FFMPEG ON CACHE BOOL "Use the version of ffmpeg from your OS")
+set(USE_SYSTEM_CEF ON CACHE BOOL "Use the version of cef from your OS (only tested with Ubuntu)")
 
 # Determine build (target) platform
 SET (PLATFORM_FOLDER_NAME "linux")

tools/linux/Dockerfile

@@ -13,7 +13,7 @@ FROM docker.io/buildpack-deps:jammy as build-casparcg
 	ARG CXX
 	ARG GIT_HASH
 
-	RUN cmake -GNinja /source
+	RUN cmake -GNinja /source -DUSE_STATIC_BOOST=ON -DUSE_SYSTEM_FFMPEG=OFF -DUSE_SYSTEM_CEF=OFF
 
 	# ensure ffmpeg dependencies are installed
 	RUN apt-get update && ./_deps/ffmpeg-lib-src/ffmpeg/install-ffmpeg-dependencies