Add DOS/DJGPP workflow

.github/workflows/DOS-DJGPP.yml

@@ -0,0 +1,35 @@
+name: CI DOS/DJGPP
+
+on:
+  push:
+  pull_request:
+  repository_dispatch:
+    types: [run_build]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container: 
+      image: git.libretro.com:5050/libretro-infrastructure/libretro-djgpp-build-container:latest
+      options: --user root
+
+    steps:
+    - uses: actions/checkout@v3
+    
+    - name: Compile RA
+      run: |
+        make -f Makefile.dos -j$(getconf _NPROCESSORS_ONLN) clean
+        make -f Makefile.dos -j$(getconf _NPROCESSORS_ONLN) HAVE_STATIC_DUMMY=1
+
+    - name: Get short SHA
+      id: slug
+      run: echo "::set-output name=sha8::$(echo ${GITHUB_SHA} | cut -c1-8)"
+    
+    - uses: actions/upload-artifact@v3
+      with:
+        name: RA-DOS-dummy-${{ steps.slug.outputs.sha8 }}
+        path: |
+          retrodos.exe

Makefile.dos

@@ -9,6 +9,7 @@ TOPDIR ?= $(CURDIR)
 
 DEBUG                  ?= 0
 WHOLE_ARCHIVE_LINK      = 0
+HAVE_STATIC_DUMMY ?= 0
 GRIFFIN_BUILD           = 0
 
 OBJ :=
@@ -183,6 +184,14 @@ ifneq ($(ROMFS),)
 	export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
 endif
 
+LIB_CORE :=
+
+ifeq ($(HAVE_STATIC_DUMMY),1)
+  DEFINES += -DHAVE_STATIC_DUMMY
+else
+  LIB_CORE += -lretro_dos
+endif
+
 DEPENDS_TMP  := $(OFILES:.o=.d)
 DEPENDS      := $(filter-out libretro_libnx.a,$(DEPENDS_TMP))
 
@@ -194,7 +203,7 @@ DEPENDS      := $(filter-out libretro_libnx.a,$(DEPENDS_TMP))
 all	:	$(OUTPUT)
 
 $(OUTPUT): $(OBJ)
-	$(CXX) -o $@ $(LDFLAGS) $(LIBDIRS) $(OBJ) $(PLATEXTRA) -L. -lretro_dos $(LIBS)
+	$(CXX) -o $@ $(LDFLAGS) $(LIBDIRS) $(OBJ) $(PLATEXTRA) -L. $(LIB_CORE) $(LIBS)
 
 %.o: %.c
 	$(CC) -c -o $@ $(CFLAGS) $<