From 4eb65fefc3153232703f184f055b1ba1875e83cd Mon Sep 17 00:00:00 2001
From: John Tsiombikas <nuclear@member.fsf.org>
Date: Tue, 11 Aug 2020 18:40:57 +0300
Subject: [PATCH] fixed DJGPP makefile

---
 Makefile.dj        |   32 +++++++++++++++-----------------
 src/scr/cybersun.c |    3 ++-
 2 files changed, 17 insertions(+), 18 deletions(-)

diff --git a/Makefile.dj b/Makefile.dj
index e249553..32ab4ae 100644
--- a/Makefile.dj
+++ b/Makefile.dj
@@ -1,7 +1,8 @@
-src = $(wildcard src/*.c) $(wildcard src/scr/*.c) $(wildcard src/dos/*.c)
+src = $(wildcard src/*.c) $(wildcard src/3dgfx/*.c) $(wildcard src/scr/*.c) \
+	  $(wildcard src/dos/*.c)
 asmsrc = $(wildcard src/*.asm) $(wildcard src/scr/*.asm) $(wildcard src/dos/*.asm)
 obj = $(src:.c=.odj) $(asmsrc:.asm=.odj)
-dep = $(obj:.odj=.dep)
+dep = $(src:.c=.d)
 bin = demo.exe
 
 asmsrc += cspr/dbgfont.asm cspr/confont.asm
@@ -14,7 +15,8 @@ else
 	TOOLPREFIX = i586-pc-msdosdjgpp-
 endif
 
-inc = -Isrc -Isrc/scr -Isrc/dos -Ilibs -Ilibs/imago/src -Ilibs/anim/src
+inc = -Isrc -Isrc/3dgfx -Isrc/scr -Isrc/dos -Ilibs \
+	  -Ilibs/imago/src -Ilibs/anim/src -Ilibs/midas
 opt = -O3 -ffast-math -fno-strict-aliasing
 warn = -pedantic -Wall -Wno-unused-function -Wno-unused-variable
 
@@ -28,8 +30,8 @@ endif
 
 CC = $(TOOLPREFIX)gcc
 AR = $(TOOLPREFIX)ar
-CFLAGS = $(warn) -march=pentium $(dbg) $(opt) $(prof) $(inc) $(def)
-LDFLAGS = libs/imago/imago.dja libs/anim/anim.dja
+CFLAGS = -march=pentium $(warn) -MMD $(dbg) $(opt) $(prof) $(inc) $(def)
+LDFLAGS = libs/imago/imago.dja libs/anim/anim.dja libs/midas/libmidas.a
 
 ifneq ($(hostsys), dos)
 .PHONY: all
@@ -44,29 +46,23 @@ $(bin): $(obj) imago anim
 
 src/data.odj: src/data.asm $(bindata)
 
-ifneq ($(hostsys), dos)
 -include $(dep)
-endif
 
 %.odj: %.c
 	$(CC) $(CFLAGS) -o $@ -c $<
 
-%.dep: %.c
-	@echo dep $@
-	@$(CPP) $(CFLAGS) $< -MM -MT $(@:.dep=.odj) >$@
-
 .PHONY: imago
 imago:
-	$(MAKE) -C libs/imago -f Makefile
+	$(MAKE) -C libs/imago -f Makefile.dj
 
 .PHONY: anim
 anim:
-	$(MAKE) -C libs/anim -f Makefile
+	$(MAKE) -C libs/anim -f Makefile.dj
 
 .PHONY: cleanlibs
 cleanlibs:
-	$(MAKE) -C libs/imago -f Makefile clean
-	$(MAKE) -C libs/anim -f Makefile clean
+	$(MAKE) -C libs/imago clean -f Makefile.dj
+	$(MAKE) -C libs/anim clean -f Makefile.dj
 
 .PHONY: clean
 .PHONY: cleandep
@@ -74,12 +70,14 @@ cleanlibs:
 ifeq ($(hostsys), dos)
 clean:
 	del src\*.odj
+	del src\3dgfx\*.odj
 	del src\dos\*.odj
 	del $(bin)
 
 cleandep:
-	del src\*.dep
-	del src\dos\*.dep
+	del src\*.d
+	del src\3dgfx\*.d
+	del src\dos\*.d
 else
 clean:
 	rm -f $(obj) $(bin)
diff --git a/src/scr/cybersun.c b/src/scr/cybersun.c
index 6cd9f6a..e150cab 100644
--- a/src/scr/cybersun.c
+++ b/src/scr/cybersun.c
@@ -162,7 +162,8 @@ static void draw_mountains(void)
 	int32_t x, xstart, xend, dx;
 	uint16_t *dptr, *sptr;
 
-	xstart = cround64(cam_theta * (256.0 * 512.0 / 90.0));	/* 24.8 fixed point, 512 width */
+	/* 24.8 fixed point, 512 width, 90deg arc */
+	xstart = cround64(cam_theta * (256.0 * 512.0 / 90.0));
 	xend = cround64((cam_theta + HFOV) * (256.0 * 512.0 / 90.0));
 	dx = (xend - xstart) / FB_WIDTH;
 	x = xstart;
-- 
1.7.10.4