Upgrade premake in preparation for .NET Core (#1298)

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

.travis.yml

@@ -21,7 +21,7 @@ install:
   - source build/InstallMono.sh
   - build/InstallNugets.sh  
   - if [ "$TRAVIS_OS_NAME" = "linux" ] && [ "$CXX" = "g++" ]; then export CXX="g++-7" CC="gcc-7"; fi
-  - if [ "$TRAVIS_OS_NAME" = "linux" ]; then PREMAKE=build/premake5-linux-64; else PREMAKE=build/premake5-osx; fi
+  - if [ "$TRAVIS_OS_NAME" = "linux" ]; then PREMAKE=build/premake5-linux; else PREMAKE=build/premake5-osx; fi
   - $PREMAKE --file=build/scripts/LLVM.lua download_llvm
 
 script: |

build/Compile.sh

@@ -19,7 +19,7 @@ done
 if [ "$(uname)" == "Darwin" ]; then
 	PREMAKE=$CUR_DIR/premake5-osx;
 elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
-	PREMAKE=$CUR_DIR/premake5-linux-64;
+	PREMAKE=$CUR_DIR/premake5-linux;
 fi
 
 MONO=mono

build/InstallMono.sh

@@ -8,5 +8,5 @@ elif [ "$OS" == "Linux" ]; then
 	sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
 	echo "deb https://download.mono-project.com/repo/ubuntu stable-focal main" | sudo tee /etc/apt/sources.list.d/mono-official-stable.list
 	sudo apt-get update -qq
-	sudo apt-get install -y --force-yes mono-mcs libmono-system-runtime4.0-cil
+	sudo apt-get install -y --force-yes mono-mcs mono-roslyn libmono-system-runtime4.0-cil
 fi

docs/BuildingLLVM.md

@@ -26,7 +26,7 @@ $PREMAKE --file=scripts/LLVM.lua build_llvm
 $PREMAKE --file=scripts/LLVM.lua package_llvm
 ```
 
-`$PREMAKE` should be replaced with `premake5.exe`, `premake5-osx` or `premake5-linux-64` depending on environment.
+`$PREMAKE` should be replaced with `premake5.exe`, `premake5-osx` or `premake5-linux` depending on environment.
 
 You can specify an `--arch=x86` or `--arch=x64` flag to the invocations above to specify an explicit build architecture.  
 

docs/GettingStarted.md

@@ -33,7 +33,7 @@ The dependencies can be automatically downloaded by running:
 cd <CppSharp>\build
 premake5 --file=scripts/LLVM.lua download_llvm # on Windows
 premake5-osx --file=scripts/LLVM.lua download_llvm # on OSX
-premake5-linux-64 --file=scripts/LLVM.lua download_llvm # on Linux
+premake5-linux --file=scripts/LLVM.lua download_llvm # on Linux
 ```
 
 Alternatively, if on Windows, just run `<CppSharp>/build/DownloadDeps.bat` from a Visual Studio command prompt
@@ -80,7 +80,7 @@ If the above script fails, you can try these equivalent manual steps:
 
 ```
 ./premake5-osx gmake # if on OSX
-./premake5-linux-64 gmake # if on Linux
+./premake5-linux gmake # if on Linux
 ```
 
 2. Build the generated makefiles: