From 834a6084c308c5691c1853a52f62deabca07ef8d Mon Sep 17 00:00:00 2001
From: Frank Halasz <frank@halasz.org>
Date: Wed, 28 May 2025 14:03:13 -0700
Subject: [PATCH] WIP.  Moving to WSL1 environment

---
 bin/makefile-cygwin.x86_64-sdl |  2 +-
 bin/makefile-wsl1.x86_64-sdl   | 25 +++++++++++++++++++++++++
 bin/makefile-wsl1.x86_64-x     | 28 ++++++++++++++++++++++++++++
 bin/osversion                  |  7 ++++++-
 inc/maiko/platform.h           | 12 +++++++++++-
 5 files changed, 71 insertions(+), 3 deletions(-)
 create mode 100644 bin/makefile-wsl1.x86_64-sdl
 create mode 100644 bin/makefile-wsl1.x86_64-x

diff --git a/bin/makefile-cygwin.x86_64-sdl b/bin/makefile-cygwin.x86_64-sdl
index 28531eb..6538071 100644
--- a/bin/makefile-cygwin.x86_64-sdl
+++ b/bin/makefile-cygwin.x86_64-sdl
@@ -15,7 +15,7 @@ XFLAGS = -DSDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE) -D__wsl1__
 
 LDFLAGS = -lm -L/usr/local/lib -lSDL2
 #
diff --git a/bin/makefile-wsl1.x86_64-sdl b/bin/makefile-wsl1.x86_64-sdl
new file mode 100644
index 0000000..ccf98c3
--- /dev/null
+++ b/bin/makefile-wsl1.x86_64-sdl
@@ -0,0 +1,25 @@
+# Options for Linux, Intel x86_64 and SDL
+
+CC = gcc -m64 $(GCC_CFLAGS)
+# CC = clang -m64 $(CLANG_CFLAGS)
+
+XFILES = $(OBJECTDIR)sdl.o
+
+#
+#  For SDL version 2
+#      -DSDL=2 in XFLAGS and -lSDL2 in LDFLAGS
+#  For SDL version 3
+#      -DSDL=3 in XFLAGS and -lSDL3 in LDFLAGS
+#
+XFLAGS = -DSDL=2
+
+# OPTFLAGS is normally -O2.
+OPTFLAGS =  -O2 -g3
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
+
+LDFLAGS = -lm -lSDL2
+LDELDFLAGS =
+
+OBJECTDIR = ../$(RELEASENAME)/
+
+default	: ../$(OSARCHNAME)/lde ../$(OSARCHNAME)/ldesdl
diff --git a/bin/makefile-wsl1.x86_64-x b/bin/makefile-wsl1.x86_64-x
new file mode 100644
index 0000000..4e80252
--- /dev/null
+++ b/bin/makefile-wsl1.x86_64-x
@@ -0,0 +1,28 @@
+# Options for Linux, Intel x86_64 and X-Window
+
+CC = gcc -m64 $(GCC_CFLAGS)
+# CC = clang -m64 $(CLANG_CFLAGS)
+
+XFILES = $(OBJECTDIR)xmkicon.o \
+	$(OBJECTDIR)xbbt.o \
+	$(OBJECTDIR)dspif.o \
+	$(OBJECTDIR)xinit.o \
+	$(OBJECTDIR)xscroll.o \
+	$(OBJECTDIR)xcursor.o \
+	$(OBJECTDIR)xlspwin.o \
+	$(OBJECTDIR)xrdopt.o \
+	$(OBJECTDIR)xwinman.o
+
+
+XFLAGS = -DXWINDOW
+
+# OPTFLAGS is normally -O2.
+OPTFLAGS =  -O2 -g3
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE) -D__wsl1__
+
+LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
+LDELDFLAGS =  -L/usr/X11/lib -lX11 -lc -lm
+
+OBJECTDIR = ../$(RELEASENAME)/
+
+default	: ../$(OSARCHNAME)/lde ../$(OSARCHNAME)/ldex
diff --git a/bin/osversion b/bin/osversion
index 80bf6bd..6d6cf21 100755
--- a/bin/osversion
+++ b/bin/osversion
@@ -8,7 +8,12 @@ case "$os" in
         *-*-solaris2*)	        echo sunos5 ;;
         alpha-dec-osf1)		echo osf1 ;;
 	*-apple-darwin*)	echo darwin ;;
-        *-*-linux*)		echo linux ;;
+        *-*-linux*)
+           echo d"${WSL_DISTRO_NAME}"d
+           echo i"${WSL_INTEROP}"i
+
+           if [ -n "${WSL_DISTRO_NAME}" ] && [ -z "${WSL_INTEROP}" ];
+           then echo wsl1; else echo linux; fi ;;
         *-*-openbsd*)		echo openbsd ;;
         *-*-freebsd*)		echo freebsd ;;
 	*-*-cygwin*)            echo cygwin ;;
diff --git a/inc/maiko/platform.h b/inc/maiko/platform.h
index 725db07..8769731 100644
--- a/inc/maiko/platform.h
+++ b/inc/maiko/platform.h
@@ -38,13 +38,23 @@
 #  define MAIKO_OS_DETECTED 1
 #endif
 
-#ifdef __linux__
+#if defined(__linux__) && !defined(__wsl1__)
 #  define MAIKO_OS_LINUX 1
 #  define MAIKO_OS_NAME "Linux"
 #  define MAIKO_OS_UNIX_LIKE 1
 #  define MAIKO_OS_DETECTED 1
 #endif
 
+#if defined(__linux__) && defined(__wsl1__)
+#  define MAIKO_OS_LINUX 1
+#  define MAIKO_OS_WSL1 1
+#  define MAIKO_OS_NAME "Windows System for Linux v1"
+#  define MAIKO_OS_UNIX_LIKE 1
+#  define MAIKO_EMULATE_TIMER_INTERRUPTS 1
+#  define MAIKO_EMULATE_ASYNC_INTERRUPTS 1
+#  define MAIKO_OS_DETECTED 1
+#endif
+
 #ifdef __NetBSD__
 #  define MAIKO_OS_NETBSD 1
 #  define MAIKO_OS_NAME "NetBSD"