commit 6686d2bfa9e6189476cfdc14d77e759d80377c06
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Thu May 19 17:18:53 2022 +0200
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Thu May 19 17:18:53 2022 +0200

    Wayland platform: add support of FreeBSD version 13.1

 README.Wayland.txt      | 22 +++++++++++++++++++---
 configure.ac            | 21 +++++++++++++++------
 libdecor/build/Makefile | 40 +++++++++++++++++++++++++++++++++-------
 makeinclude.in          |  1 +
 4 files changed, 68 insertions(+), 16 deletions(-)

diff --git README.Wayland.txt README.Wayland.txt
index 668fc13..f307cd1 100644
--- README.Wayland.txt
+++ README.Wayland.txt
@@ -20,7 +20,7 @@ CONTENTS
 ==============
 
 Version 1.4 of the FLTK library introduces support of the public FLTK API on
-the Wayland platform. It requires a Wayland-equipped OS which means Linux.
+the Wayland platform. It requires a Wayland-equipped OS, namely Linux or FreeBSD.
 Pre-existing platform-independent source code for FLTK 1.3.x should build and
 run unchanged with FLTK 1.4 and the Wayland platform.
 The code has been tested on Debian, Ubuntu and Fedora with 3 distinct Wayland
@@ -32,8 +32,8 @@ CJK text-input methods, as well as dead and compose keys are supported.
 ==========================
 
 It is possible to have your FLTK application do all its windowing and drawing
-through the Wayland protocol on Linux systems. All graphics is done via Cairo or EGL.
-All text-drawing is done via Pango.
+through the Wayland protocol on Linux or FreeBSD systems.
+All graphics is done via Cairo or EGL. All text-drawing is done via Pango.
 
  2.1 Configuration
 ---------------
@@ -167,3 +167,19 @@ in a Fedora 35 Workstation distribution :
 - cmake-gui    <== if you plan to use the GUI of CMake
 
 Package installation command: sudo yum install <package-name ...>
+
+
+3.3 FreeBSD
+
+The Wayland platform is know to work with FreeBSD version 13.1 and the sway compositor.
+
+These packages are necessary to build the FLTK library and the sway compositor:
+pkg install git autoconf pkgconf xorg urwfonts gnome seatd sway dmenu-wayland dmenu
+
+The FLTK library should be built, for now, as follows :
+
+git clone https://github.com/fltk/fltk fltk
+cd fltk
+autoconf -f
+./configure --enable-localzlib --enable-wayland
+make
diff --git configure.ac configure.ac
index 0d35374..8b2b95e 100644
--- configure.ac
+++ configure.ac
@@ -996,17 +996,26 @@ AS_CASE([$host_os_gui], [cygwin* | mingw*], [
       DSOFLAGS="$LIBS $DSOFLAGS"
       enable_pango=yes
       LIBDECORDIR="libdecor/build"
-      LDFLAGS="$LDFLAGS -rdynamic -no-pie"
+      LDFLAGS="$LDFLAGS -rdynamic"
+      AC_SUBST([UNAME])
+      UNAME="$(uname -s)"
+      AS_CASE([$UNAME], 
+         [Linux], [LDFLAGS="$LDFLAGS -no-pie"],
+         [*], [CXXFLAGS="$CXXFLAGS -I../libdecor/build"]
+      )
 
       AC_SEARCH_LIBS([dlopen], [dl])
 
       AS_IF([test x$enable_gl != xno], [
-          AC_CHECK_HEADER([GL/gl.h], [AC_DEFINE([HAVE_GL])])
-          AC_CHECK_HEADER([GL/glu.h], [
-              AC_DEFINE([HAVE_GL_GLU_H])
-              GLLIBS="$($PKGCONFIG --libs wayland-egl) $($PKGCONFIG --libs egl) $($PKGCONFIG --libs glu) $($PKGCONFIG --libs gl) $GLLIBS"
+          AS_IF([$PKGCONFIG --exists gl], [ 
+             AC_DEFINE([HAVE_GL]) 
+             GLLIBS="$($PKGCONFIG --libs wayland-egl) $($PKGCONFIG --libs egl) $($PKGCONFIG --libs gl) $GLLIBS"
           ])
-          GLWLDEMO="egl"
+          AS_IF([$PKGCONFIG --exists glu], [ 
+             AC_DEFINE([HAVE_GL_GLU_H]) 
+             GLLIBS="$($PKGCONFIG --libs glu) $GLLIBS"
+          ])
+           GLWLDEMO="egl"
       ], [
           LINKFLTKGL=""
           GLLIBNAME=""
diff --git libdecor/build/Makefile libdecor/build/Makefile
index 99f825d..498f01f 100644
--- libdecor/build/Makefile
+++ libdecor/build/Makefile
@@ -16,22 +16,47 @@
 
 include ../../makeinclude
 
-CFLAGS_DECOR =  -I. -I../.. -I../../src -I../src -fPIC -D_GNU_SOURCE \
-  -DUSE_SYSTEM_LIBDECOR=0 -DHAVE_MEMFD_CREATE -DHAVE_MKOSTEMP -DHAVE_POSIX_FALLOCATE
 OBJECTS =  fl_libdecor.o libdecor-cairo-blur.o fl_libdecor-plugins.o \
   ../../src/xdg-decoration-protocol.o ../../src/xdg-shell-protocol.o \
   ../../src/text-input-protocol.o cursor-settings.o os-compatibility.o
-PROTOCOLS = /usr/share/wayland-protocols
+
+
+#$(UNAME) is set to the product of `uname -s` in makeinclude
+
+Linux_PROTO  = /usr/share/wayland-protocols
+FreeBSD_PROTO =  /usr/local/share/wayland-protocols
+PROTOCOLS = ${${UNAME}_PROTO}
+
+Linux_INPUT =
+FreeBSD_INPUT = linux/input.h
+EXTRA_INPUT= ${${UNAME}_INPUT}
+
+Linux_CFLAGS =
+FreeBSD_CFLAGS = -I/usr/local/include
+EXTRA_DECOR =  ${${UNAME}_CFLAGS}
+
+CFLAGS_DECOR =  -I. -I../.. -I../../src -I../src $(EXTRA_DECOR) -fPIC -D_GNU_SOURCE \
+  -DUSE_SYSTEM_LIBDECOR=0 -DHAVE_MEMFD_CREATE -DHAVE_MKOSTEMP -DHAVE_POSIX_FALLOCATE
+
+Linux_NOPIE = -no-pie
+FreeBSD_NOPIE =
+NOPIE = ${${UNAME}_NOPIE}
 
 all : demo $(GLWLDEMO)
 
 depend:
 	: echo "libdecor/build: make depend..."
+	
+linux/input.h :
+	mkdir -p linux
+	echo "#define BTN_LEFT 0x110" > linux/input.h
+	echo "#define BTN_RIGHT 0x111" >> linux/input.h
+	echo "#define BTN_MIDDLE 0x112" >> linux/input.h
 
 fl_libdecor.o : fl_libdecor.c ../src/libdecor.c ../../src/xdg-shell-protocol.c ../../src/xdg-decoration-protocol.c ../../src/text-input-protocol.c
 	$(CC) $(CFLAGS) $(CFLAGS_DECOR) -c  fl_libdecor.c -DLIBDECOR_PLUGIN_API_VERSION=1 -DLIBDECOR_PLUGIN_DIR=\"/usr/local/lib\"
 
-fl_libdecor-plugins.o : fl_libdecor-plugins.c ../src/plugins/cairo/libdecor-cairo.c
+fl_libdecor-plugins.o : $(EXTRA_INPUT) fl_libdecor-plugins.c ../src/plugins/cairo/libdecor-cairo.c
 	$(CC) $(CFLAGS) $(CFLAGS_DECOR) -c  fl_libdecor-plugins.c  -DLIBDECOR_PLUGIN_API_VERSION=1 -DLIBDECOR_PLUGIN_DIR=\"/usr/local/lib\"
 
 libdecor-cairo-blur.o : ../src/plugins/cairo/libdecor-cairo-blur.c
@@ -65,11 +90,11 @@ cursor-settings.o : ../src/cursor-settings.c
 	    $(PROTOCOLS)/unstable/text-input/text-input-unstable-v3.xml \
 	    ../../src/text-input-client-protocol.h
 	
-demo : ../demo/demo.c $(OBJECTS)
-	$(CC)  -o demo ../demo/demo.c -D_GNU_SOURCE -I../.. -I../src -I. -I../../src $(OBJECTS) $(LDLIBS) -lm -rdynamic -no-pie -Wl,--defsym=fl_libdecor_using_weston=0
+demo : ../demo/demo.c $(OBJECTS) $(EXTRA_INPUT)
+	$(CC)  -o demo ../demo/demo.c -D_GNU_SOURCE -I../.. -I../src -I. -I../../src $(EXTRA_DECOR) $(OBJECTS) $(LDLIBS) -lm -rdynamic $(NOPIE) -Wl,--defsym=fl_libdecor_using_weston=0
 
 egl : ../demo/egl.c $(OBJECTS)
-	$(CC)  -o egl ../demo/egl.c -D_GNU_SOURCE -I../.. -I../src -I. -I../../src $(OBJECTS) $(GLDLIBS) -lm -rdynamic -no-pie -Wl,--defsym=fl_libdecor_using_weston=0
+	$(CC)  -o egl ../demo/egl.c -D_GNU_SOURCE -I../.. -I../src -I. -I../../src $(EXTRA_DECOR) $(OBJECTS) $(GLDLIBS) -lm -rdynamic $(NOPIE) -Wl,--defsym=fl_libdecor_using_weston=0 
 
 
 install:
@@ -79,3 +104,4 @@ uninstall:
 
 clean:
 	$(RM) *.o ../../src/xdg-*.c ../../src/xdg-*.h ../../src/xdg-*.o ../../src/text-input-* demo egl
+	rm -r -f linux
diff --git makeinclude.in makeinclude.in
index 49db6e7..8df8eb2 100644
--- makeinclude.in
+++ makeinclude.in
@@ -27,6 +27,7 @@ FLTK_VERSION		= @FLTK_VERSION@
 # FLTK configuration options: BUILD = { WIN | OSX | X11 | XFT | WAYLAND }
 
 BUILD		= @BUILD@
+UNAME            = @UNAME@
 
 # Standard configure variables