clean up build flags

The flag handling (both compiler options and include paths) are a mess at
the moment.  There is no point in forcing "-O2 -g" when these are already
the defaults, and if someone changes the defaults, chances are good they
don't want you clobbering their choices.

The -Wall flag should be handled in configure and thrown into CFLAGS once
rather than every Makefile.am.  Plus, this way we can control which
compilers the flag actually gets used with.

Finally, the INCLUDES variable is for -I paths, not AM_CFLAGS.  Nor should
it contain -I. as this is already in the default includes setup.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Makefile.am

-CFLAGS=-g -Wall
-
 if WITH_X11VNC
 X11VNC=x11vnc
 endif

client_examples/Makefile.am

-AM_CFLAGS=-I $(top_srcdir) -g -Wall
+INCLUDES = -I$(top_srcdir)
 LDADD = ../libvncclient/libvncclient.la @WSOCKLIB@
 
 if WITH_FFMPEG

configure.ac

@@ -12,6 +12,7 @@ if test -z "$CC"; then
 else
 	CCLD="$CC"
 fi
+test "x$GCC" = "xyes" && CFLAGS="$CFLAGS -Wall"
 AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 AC_PATH_PROG([AR], [ar], [/usr/bin/ar],

contrib/Makefile.am

-AM_CFLAGS = -I $(top_srcdir)
+INCLUDES = -I$(top_srcdir)
 LDADD = ../libvncserver/libvncserver.la @WSOCKLIB@
 
 noinst_PROGRAMS=zippy

examples/Makefile.am

-AM_CFLAGS=-I $(top_srcdir) -g -Wall
+INCLUDES = -I$(top_srcdir)
 LDADD = ../libvncserver/libvncserver.la @WSOCKLIB@
 
 if OSX

libvncclient/Makefile.am

-AM_CFLAGS=-g -I $(top_srcdir) -I. -Wall
+INCLUDES = -I$(top_srcdir)
 
 libvncclient_la_SOURCES=cursor.c listen.c rfbproto.c sockets.c vncviewer.c minilzo.c
 

libvncserver/Makefile.am

-AM_CFLAGS=-g -Wall -I $(top_srcdir)
+INCLUDES = -I$(top_srcdir)
 
 if WITH_TIGHTVNC_FILETRANSFER
 TIGHTVNCFILETRANSFERHDRS=tightvnc-filetransfer/filelistinfo.h \

test/Makefile.am

-AM_CFLAGS=-I $(top_srcdir) -g -Wall
+INCLUDES = -I$(top_srcdir)
 LDADD = ../libvncserver/libvncserver.la ../libvncclient/libvncclient.la @WSOCKLIB@
 
 if HAVE_LIBPTHREAD

vncterm/Makefile.am

-AM_CFLAGS=-I $(top_srcdir)
+INCLUDES = -I$(top_srcdir)
 
 CONSOLE_SRCS=VNConsole.c
 
 noinst_HEADERS=VNConsole.h vga.h
 
 LDADD=../libvncserver/libvncserver.la @WSOCKLIB@
-INCLUDES=-I.
 
 if LINUX
 bin_PROGRAMS=LinuxVNC

x11vnc/Makefile.am

-AM_CFLAGS = -I $(top_srcdir)
 if HAVE_SYSTEM_LIBVNCSERVER
 LDADD = @SYSTEM_LIBVNCSERVER_LIBS@ @WSOCKLIB@
 else
@@ -27,9 +26,11 @@ bin_PROGRAMS=x11vnc
 x11vnc_SOURCES = 8to24.c avahi.c cleanup.c connections.c cursor.c gui.c help.c inet.c keyboard.c linuxfb.c macosx.c macosxCG.c macosxCGP.c macosxCGS.c options.c pm.c pointer.c rates.c remote.c scan.c screen.c selection.c solid.c sslcmds.c sslhelper.c uinput.c unixpw.c user.c userinput.c util.c v4l.c win_utils.c x11vnc.c x11vnc_defs.c xdamage.c xevents.c xinerama.c xkb_bell.c xrandr.c xrecord.c xwrappers.c 8to24.h allowed_input_t.h avahi.h blackout_t.h cleanup.h connections.h cursor.h enc.h enums.h gui.h help.h inet.h keyboard.h linuxfb.h macosx.h macosxCG.h macosxCGP.h macosxCGS.h nox11.h nox11_funcs.h options.h params.h pm.h pointer.h rates.h remote.h scan.h screen.h scrollevent_t.h selection.h solid.h sslcmds.h sslhelper.h ssltools.h tkx11vnc.h uinput.h unixpw.h user.h userinput.h util.h v4l.h win_utils.h winattr_t.h x11vnc.h xdamage.h xevents.h xinerama.h xkb_bell.h xrandr.h xrecord.h xwrappers.h
 
 if HAVE_SYSTEM_LIBVNCSERVER
-INCLUDES=@SYSTEM_LIBVNCSERVER_CFLAGS@ @X_CFLAGS@ @AVAHI_CFLAGS@
+INCLUDES_LIBVNCSERVER = @SYSTEM_LIBVNCSERVER_CFLAGS@
 else
-INCLUDES=@X_CFLAGS@ @AVAHI_CFLAGS@
+INCLUDES_LIBVNCSERVER =
 endif
+INCLUDES = -I$(top_srcdir)
+INCLUDES += $(INCLUDES_LIBVNCSERVER) @X_CFLAGS@ @AVAHI_CFLAGS@
 
 x11vnc_LDADD=$(LDADD) @SSL_LIBS@ @CRYPT_LIBS@ @X_LIBS@ @AVAHI_LIBS@ $(LD_CYGIPC)