diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..30d9e7c
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,34 @@
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+name: "Build"
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-20.04
+          - windows-2019
+          - macos-10.15
+    env:
+      ARCHIVE: 1
+
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v2
+
+      - name: "Compile"
+        run: make release
+
+      - name: "Upload artifacts"
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ runner.os }}
+          path: bspc*
diff --git a/Makefile b/Makefile
index f5fe36f..4284db5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,55 @@
+#
+# bspc Makefile
+#
+# GNU Make required
+#
+COMPILE_PLATFORM=$(shell uname | sed -e 's/_.*//' | tr '[:upper:]' '[:lower:]' | sed -e 's/\//_/g')
+COMPILE_ARCH=$(shell uname -m | sed -e 's/i.86/x86/' | sed -e 's/^arm.*/arm/')
+
+ifeq ($(COMPILE_PLATFORM),sunos)
+  # Solaris uname and GNU uname differ
+  COMPILE_ARCH=$(shell uname -p | sed -e 's/i.86/x86/')
+endif
+
+#############################################################################
+#
+# If you require a different configuration from the defaults below, create a
+# new file named "Makefile.local" in the same directory as this file and define
+# your parameters there. This allows you to change configuration without
+# causing problems with keeping up to date with the repository.
+#
+#############################################################################
+-include Makefile.local
+
+ifeq ($(COMPILE_PLATFORM),cygwin)
+  PLATFORM=mingw32
+endif
+
+ifndef PLATFORM
+PLATFORM=$(COMPILE_PLATFORM)
+endif
+
+ifeq ($(PLATFORM),mingw32)
+  MINGW=1
+endif
+ifeq ($(PLATFORM),mingw64)
+  MINGW=1
+endif
+
+
 CC=gcc
 CFLAGS=\
 	-Dstricmp=strcasecmp -DCom_Memcpy=memcpy -DCom_Memset=memset \
-	-DMAC_STATIC= -DQDECL= -DLINUX -DBSPC -D_FORTIFY_SOURCE=2 \
+	-DMAC_STATIC= -DQDECL= -DBSPC -D_FORTIFY_SOURCE=2 \
 	-fno-common \
-	-I. -Ideps -Wall
+	-I. -Ideps -Wall $(EXPAT_CFLAGS)
+
+ifneq (,$(findstring "$(PLATFORM)", "linux" "gnu_kfreebsd" "kfreebsd-gnu" "gnu"))
+  CFLAGS += -DHAVE_GETRANDOM -DLINUX
+endif
+ifeq ($(PLATFORM),darwin)
+  CFLAGS += -DHAVE_ARC4RANDOM -DLINUX
+endif
 
 RELEASE_CFLAGS=-O3 -ffast-math
 DEBUG_CFLAGS=-g -O0 -ffast-math
@@ -80,20 +126,24 @@ GAME_OBJS = \
         #tetrahedron.o
 
 EXEC = bspc
+ifdef MINGW
+  BINEXT=.exe
+endif
+
 
 all: release
 
 debug: CFLAGS += $(DEBUG_CFLAGS)
-debug: $(EXEC)_g
+debug: $(EXEC)_g$(BINEXT)
 
 release: CFLAGS += $(RELEASE_CFLAGS)
-release: $(EXEC)
+release: $(EXEC)$(BINEXT)
 
-$(EXEC): $(GAME_OBJS)
+$(EXEC)$(BINEXT): $(GAME_OBJS)
 	$(CC) -o $@ $(GAME_OBJS) $(LDFLAGS)
 	strip $@
 
-$(EXEC)_g: $(GAME_OBJS)
+$(EXEC)_g$(BINEXT): $(GAME_OBJS)
 	$(CC) -o $@ $(GAME_OBJS) $(LDFLAGS)
 
 #############################################################################
diff --git a/deps/botlib/l_script.c b/deps/botlib/l_script.c
index d4da773..19863e1 100644
--- a/deps/botlib/l_script.c
+++ b/deps/botlib/l_script.c
@@ -46,6 +46,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 typedef enum {qfalse, qtrue}	qboolean;
 
 #endif //SCREWUP
+int             COM_Compress( char *data_p );
 
 #ifdef BOTLIB
 //include files for usage in the bot library