Merge branch 'master' into 'master'

Linux build script enhanced

See merge request Mr_Goldberg/goldberg_emulator!3

build_linux.sh

@@ -1,2 +1,43 @@
+#!/bin/sh
+HERE="$(dirname "$(readlink -f "${0}")")"
+
+# get distribution
+if [ -e "/etc/os-release" ]
+then
+    DISTRO=$(grep "^ID=" "/etc/os-release" | cut -d"=" -f2| sed 's/"//g')
+    DISTRO_VERSION=$(grep "^VERSION_ID=" "/etc/os-release" | cut -d"=" -f2)
+else
+    echo "Linux distribution not found."
+    echo "Maybe the file \"/etc/os-release\" is just missing."
+    echo "Or your linux distribution is too old. Cannot check requirements."
+    echo ""
+fi
+
+opensuse_requirements(){
+    if ! which "protoc" > /dev/null 2>&1
+    then
+        echo "protoc isn't installed."
+        echo "Please install \"protobuf-devel\" package and try again"
+        exit 1
+    fi
+    if ! which "clang++" > /dev/null 2>&1
+    then
+        echo "clang++ isn't installed."
+        echo "Please install \"clang5\" package and try again"
+        exit 1
+    fi
+}
+
+if [ -n "${DISTRO}" ]
+then
+    case "${DISTRO}" in
+        opensuse|opensuse-leap)
+            opensuse_requirements
+            ;;
+        *)
+            ;;
+    esac
+fi
+
 protoc -I./dll/ --cpp_out=./dll/ ./dll/*.proto
 clang++ -shared -fPIC -o libsteam_api.so dll/*.cpp dll/*.cc -g3 -Wno-return-type -fsanitize=address -lasan -lprotobuf-lite -std=c++14 && echo built