Enable/Disable support for debugger and screenshots

Bettter checks for libpng and libcurses
Removal of settings.h file


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@733

acinclude.m4

@@ -180,7 +180,9 @@ AH_TOP([
  */
 ])
 
-AH_TEMPLATE([C_HAS_ATTRIBUTE],[Determines if the compilers supports attributes for structures])
+AH_TEMPLATE([C_HAS_ATTRIBUTE],[Determines if the compilers supports attributes for structures.])
+AH_TEMPLATE([C_DEBUG],[Enable the internal debugger.])
+AH_TEMPLATE([C_SSHOT],[Enable the screenshot support.])
 
 AH_BOTTOM([#define INLINE inline])
 
@@ -190,5 +192,18 @@ AH_BOTTOM([#if C_HAS_ATTRIBUTE
 #define GCC_ATTRIBUTE(x) /* attribute not supported */
 #endif])
 
+AH_BOTTOM([
+/* Enable some heavy debugging options */
+#define C_HEAVY_DEBUG 0
+
+/* Enable some big compile-time increasing inlines */
+#define C_EXTRAINLINE 0
+
+/* Enable the FPU module, still only for beta testing */
+#define C_FPU 0
+
+/* Maximum memory address range in megabytes */
+#define C_MEM_MAX_SIZE 12
+])
 
 

autogen.sh

@@ -10,8 +10,4 @@ autoheader
 automake --gnits --include-deps --add-missing --copy 
 autoconf
 
-#Copy settings.h.cvs to settings.h and that's it,
-
-directory=`dirname $0`
-cp $directory/settings.h.cvs $directory/settings.h
-echo "Now you are ready to run ./configure also check settings.h for extra build settings"
+echo "Now you are ready to run ./configure, afterwards check config.h for extra build settings"

configure.in

@@ -36,7 +36,6 @@ AC_TYPE_SIZE_T
 AC_STRUCT_TM
 
 dnl Checks for libraries.
-AC_CHECK_LIB(png, png_check_sig, , AC_MSG_ERROR([*** libpng not found!]), -lz)
 
 #Check if the compiler support attributes
 AC_MSG_CHECKING(if compiler allows __attribute__)
@@ -46,6 +45,33 @@ AC_TRY_COMPILE([], [typedef struct { } __attribute__ ((packed)) junk;],
 #Check for big endian machine, should #define WORD_BIGENDIAN if so
 AC_C_BIGENDIAN
 
+#Features to enable/disable
+AH_TEMPLATE(C_DEBUG,[Define to 1 to enable internal debugger, requires libcurses])
+AC_ARG_ENABLE(debug,[  --enable-debug          Enable debug mode],[
+   AC_CHECK_HEADER(curses.h,have_curses_h=yes,)
+   AC_CHECK_LIB(curses, initscr, have_curses_lib=yes, , )
+
+   if test x$have_curses_lib = xyes -a x$have_curses_h = xyes ; then
+     AC_DEFINE(C_DEBUG,1)
+   else 
+     AC_MSG_WARN([Can't enable debug mode without libcurses])
+   fi
+],)
+
+AH_TEMPLATE(C_SSHOTS,[Define to 1 to enable screenshots, requires libpng])
+AC_ARG_ENABLE(shots,[  --enable-shots          Enable screenshot support],[
+  AC_CHECK_HEADER(png.h,have_png_h=yes,)
+  AC_CHECK_LIB(png, png_check_sig, have_png_lib=yes, , -lz)
+
+  if test x$have_curses_lib = xyes -a x$have_curses_h = xyes ; then
+    AC_DEFINE(C_SSHOTS,1)
+  else 
+    AC_MSG_WARN([Can't enable screenshots without libpng])
+  fi
+],)
+
+
+
 AC_OUTPUT([ 
 Makefile
 src/Makefile