From 662a04781504c95f77e76e0026247806ac410cfc Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Wed, 17 May 2017 20:46:22 +0200
Subject: [PATCH] Enable readline and tcl in mxe builds

---
 CodingReadme   | 26 ++++++++++++++++++++++++++
 Makefile       | 12 ++++++++----
 kernel/yosys.h | 10 ++++++++++
 3 files changed, 44 insertions(+), 4 deletions(-)

diff --git a/CodingReadme b/CodingReadme
index 9e85add28..5800e30c3 100644
--- a/CodingReadme
+++ b/CodingReadme
@@ -411,6 +411,32 @@ Updating the website:
 	git commit -am update
 	make push
 
+
+
+Cross-Building for Windows with MXE
+===================================
+
+Check http://mxe.cc/#requirements and install all missing requirements.
+
+As root (or other user with write access to /usr/local/src):
+
+	cd /usr/local/src
+	git clone https://github.com/mxe/mxe.git
+	cd mxe
+
+	make -j$(nproc) MXE_PLUGIN_DIRS="plugins/tcl.tk" \
+			MXE_TARGETS="i686-w64-mingw32.static" \
+			gcc tcl readline
+
+Then as regular user in some directory where you build stuff:
+
+	git clone https://github.com/cliffordwolf/yosys.git yosys-win32
+	cd yosys-win32
+	make config-mxe
+	make -j$(nproc) mxebin
+
+
+
 How to add unit test
 ====================
 
diff --git a/Makefile b/Makefile
index 71bd8cb55..d9eccf1dd 100644
--- a/Makefile
+++ b/Makefile
@@ -176,9 +176,10 @@ yosys.html: misc/yosys.html
 	$(P) cp misc/yosys.html yosys.html
 
 else ifeq ($(CONFIG),mxe)
+PKG_CONFIG = /usr/local/src/mxe/usr/bin/i686-w64-mingw32.static-pkg-config
 CXX = /usr/local/src/mxe/usr/bin/i686-w64-mingw32.static-gcc
 LD = /usr/local/src/mxe/usr/bin/i686-w64-mingw32.static-gcc
-CXXFLAGS += -std=c++11 -Os -D_POSIX_SOURCE
+CXXFLAGS += -std=c++11 -Os -D_POSIX_SOURCE -DYOSYS_MXE_HACKS -Wno-attributes
 CXXFLAGS := $(filter-out -fPIC,$(CXXFLAGS))
 LDFLAGS := $(filter-out -rdynamic,$(LDFLAGS)) -s
 LDLIBS := $(filter-out -lrt,$(LDLIBS))
@@ -213,7 +214,7 @@ LDLIBS += -lcurses
 ABCMKARGS += "ABC_READLINE_LIBRARIES=-lcurses -lreadline"
 endif
 ifeq ($(CONFIG),mxe)
-LDLIBS += -lpdcurses
+LDLIBS += -ltermcap
 endif
 endif
 
@@ -226,9 +227,14 @@ ifeq ($(ENABLE_TCL),1)
 TCL_VERSION ?= tcl$(shell bash -c "tclsh <(echo 'puts [info tclversion]')")
 TCL_INCLUDE ?= /usr/include/$(TCL_VERSION)
 
+ifeq ($(CONFIG),mxe)
+CXXFLAGS += -DYOSYS_ENABLE_TCL
+LDLIBS += -ltcl86 -lwsock32 -lws2_32 -lnetapi32
+else
 CXXFLAGS += $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) $(PKG_CONFIG) --silence-errors --cflags tcl || echo -I$(TCL_INCLUDE)) -DYOSYS_ENABLE_TCL
 LDLIBS += $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) $(PKG_CONFIG) --silence-errors --libs tcl || echo -l$(TCL_VERSION))
 endif
+endif
 
 ifeq ($(ENABLE_GPROF),1)
 CXXFLAGS += -pg
@@ -557,9 +563,7 @@ config-emcc: clean
 
 config-mxe: clean
 	echo 'CONFIG := mxe' > Makefile.conf
-	echo 'ENABLE_TCL := 0' >> Makefile.conf
 	echo 'ENABLE_PLUGINS := 0' >> Makefile.conf
-	echo 'ENABLE_READLINE := 0' >> Makefile.conf
 
 config-msys2: clean
 	echo 'CONFIG := msys2' > Makefile.conf
diff --git a/kernel/yosys.h b/kernel/yosys.h
index ae73146b8..1076fb215 100644
--- a/kernel/yosys.h
+++ b/kernel/yosys.h
@@ -74,6 +74,16 @@
 
 #ifdef YOSYS_ENABLE_TCL
 #  include <tcl.h>
+#  ifdef YOSYS_MXE_HACKS
+extern Tcl_Command Tcl_CreateCommand(Tcl_Interp *interp, const char *cmdName, Tcl_CmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *deleteProc);
+extern Tcl_Interp *Tcl_CreateInterp(void);
+extern void Tcl_DeleteInterp(Tcl_Interp *interp);
+extern int Tcl_Eval(Tcl_Interp *interp, const char *script);
+extern int Tcl_EvalFile(Tcl_Interp *interp, const char *fileName);
+extern void Tcl_Finalize(void);
+extern int Tcl_GetCommandInfo(Tcl_Interp *interp, const char *cmdName, Tcl_CmdInfo *infoPtr);
+extern const char *Tcl_GetStringResult(Tcl_Interp *interp);
+#  endif
 #endif
 
 #ifdef _WIN32
-- 
2.30.2