Rename config header input files to better names

Up to FLTK 1.4 we had two distinct input files for each header file:
one for configure and one for CMake. Since 1.5 we have only one input
file for each header which can now have a more appropriate name.

1) configh.cmake.in   -> config.h.in
2) fl_config.cmake.in -> fl_config.h.in

1 files changed, 345 insertions, 0 deletions

diff --git a/config.h.in b/config.h.in
new file mode 100644
index 000000000..b74a7a1ac
--- /dev/null
+++ b/config.h.in
@@ -0,0 +1,345 @@
+/* @CONFIG_H@.  Generated from @CONFIG_H_IN@ by CMake.  */
+/*
+ * Configuration file for the Fast Light Tool Kit (FLTK). This file is used
+ * internally in the FLTK library and is not publicly available (not installed).
+ *
+ * Copyright 1998-2025 by Bill Spitzak and others.
+ *
+ * This library is free software. Distribution and use rights are outlined in
+ * the file "COPYING" which should have been included with this file.  If this
+ * file is missing or damaged, see the license at:
+ *
+ *     https://www.fltk.org/COPYING.php
+ *
+ * Please see the following page on how to report bugs and issues:
+ *
+ *     https://www.fltk.org/bugs.php
+ */
+
+/*
+ * Note: CMake syntax in input file (examples):
+ *
+ *   For instance in @CONFIG_H_IN@ (remove brackets for real syntax):
+ *   ----------------------------------------------------------------
+ *   [#]cmakedefine01  HAVE_GL
+ *   [#]cmakedefine    HAVE_SNPRINTF  1
+ *
+ *   The former defines HAVE_GL either as 0 or 1.
+ *
+ *   The latter either doesn't define HAVE_SNPRINTF or defines it as 1.
+ *   The value (1 in the example) can be an arbitrary number or string.
+ */
+
+/*
+ * Always include the public build configuration header
+ */
+
+#include <FL/fl_config.h>
+
+/*
+ * Where to find files...
+ */
+
+#define FLTK_DATADIR "@PREFIX_DATA@"
+#define FLTK_DOCDIR "@PREFIX_DOC@"
+
+/*
+ * BORDER_WIDTH:
+ *
+ * Thickness of FL_UP_BOX and FL_DOWN_BOX.  Current 1,2, and 3 are
+ * supported.
+ *
+ * 3 is the historic FLTK look.
+ * 2 is the default and looks like Microsoft Windows, KDE, and Qt.
+ * 1 is a plausible future evolution...
+ *
+ * Note that this may be simulated at runtime by redefining the boxtypes
+ * using Fl::set_boxtype().
+ */
+
+#define BORDER_WIDTH 2
+
+/*
+ * HAVE_GL:
+ *
+ * Do you have OpenGL? Set this to 0 if you don't have or plan to use
+ * OpenGL, and FLTK will be smaller.
+ */
+
+#cmakedefine01 HAVE_GL
+
+/*
+ * HAVE_GL_GLU_H:
+ *
+ * Do you have the OpenGL Utility Library header file?
+ * (many broken Mesa RPMs do not...)
+ */
+
+#cmakedefine01 HAVE_GL_GLU_H
+
+/*
+ * HAVE_GLXGETPROCADDRESSARB:
+ *
+ * Do you have the OpenGL glXGetProcAddressARB() function?
+ */
+
+#cmakedefine HAVE_GLXGETPROCADDRESSARB 1
+
+/*
+ * USE_COLORMAP:
+ *
+ * Setting this to zero will save a good deal of code (especially for
+ * fl_draw_image), but FLTK will only work on TrueColor visuals.
+ */
+
+#define USE_COLORMAP 1
+
+/*
+ * HAVE_XINERAMA
+ *
+ * Do we have the Xinerama library to support multi-head displays?
+ */
+
+#cmakedefine01 HAVE_XINERAMA
+
+/*
+ * USE_XFT
+ *
+ * Use the Xft library to draw anti-aliased text.
+ */
+
+#cmakedefine01 USE_XFT
+
+/*
+ * USE_PANGO
+ *
+ * Use the pango library to draw UTF-8 text.
+ */
+
+#cmakedefine01 USE_PANGO
+
+/*
+ * HAVE_XFIXES:
+ *
+ * Do we have the X fixes extension?
+ */
+
+#cmakedefine01 HAVE_XFIXES
+
+/*
+ * HAVE_XCURSOR:
+ *
+ * Do we have the X cursor library?
+ */
+
+#cmakedefine01 HAVE_XCURSOR
+
+/*
+ * HAVE_XRENDER:
+ *
+ * Do we have the X render library?
+ */
+
+#cmakedefine01 HAVE_XRENDER
+
+/*
+ * HAVE_X11_XREGION_H:
+ *
+ * Do we have the X11 Xregion.h header file ?
+ */
+
+#cmakedefine01 HAVE_X11_XREGION_H
+
+/*
+ * HAVE_GL_OVERLAY:
+ *
+ * It is possible your GL has an overlay even if X does not.  If so,
+ * set this to 1.
+ */
+
+#define HAVE_GL_OVERLAY 0
+
+/*
+ * WORDS_BIGENDIAN:
+ *
+ * Byte order of your machine: 1 = big-endian, 0 = little-endian.
+ */
+
+#ifdef __APPLE__
+#include <mac_endianness.h>
+#else
+#cmakedefine01 WORDS_BIGENDIAN
+#endif
+
+/*
+ * U16, U32, U64:
+ *
+ * Types used by fl_draw_image.  One of U32 or U64 must be defined.
+ * U16 is optional but FLTK will work better with it!
+ */
+
+#cmakedefine U16 @U16@
+#cmakedefine U32 @U32@
+#cmakedefine U64 @U64@
+
+/*
+ * HAVE_DIRENT_H, HAVE_SYS_NDIR_H, HAVE_SYS_DIR_H, HAVE_NDIR_H,
+ * HAVE_SCANDIR, HAVE_SCANDIR_POSIX:
+ *
+ * Where is <dirent.h> (used only by fl_file_chooser and scandir).
+ */
+
+#cmakedefine HAVE_DIRENT_H 1
+#cmakedefine HAVE_SYS_NDIR_H 1
+#cmakedefine HAVE_SYS_DIR_H 1
+#cmakedefine HAVE_NDIR_H 1
+#cmakedefine HAVE_SCANDIR 1
+#cmakedefine HAVE_SCANDIR_POSIX 1
+
+/*
+ * Possibly missing sprintf-style functions:
+ */
+
+#cmakedefine HAVE_VSNPRINTF 1
+#cmakedefine HAVE_SNPRINTF 1
+
+/*
+ * String functions and headers...
+ */
+
+#cmakedefine HAVE_STRINGS_H 1
+#cmakedefine HAVE_STRCASECMP 1
+#cmakedefine HAVE_STRLCAT 1
+#cmakedefine HAVE_STRLCPY 1
+
+/*
+ * Do we have POSIX locale support?
+ */
+
+#cmakedefine HAVE_LOCALE_H 1
+#cmakedefine HAVE_LOCALECONV 1
+
+/*
+ * HAVE_SYS_SELECT_H:
+ *
+ * Whether or not select() call has its own header file.
+ */
+
+#cmakedefine01 HAVE_SYS_SELECT_H
+
+/*
+ * HAVE_SYS_STDTYPES_H:
+ *
+ * Whether or not we have the <sys/stdtypes.h> header file.
+ */
+
+#cmakedefine HAVE_SYS_STDTYPES_H 1
+
+/*
+ * USE_POLL:
+ *
+ * Use the poll() call provided on Linux and Irix instead of select()
+ */
+
+#cmakedefine01 USE_POLL
+
+/*
+ * HAVE_SETENV:
+ *
+ * Whether or not POSIX setenv() is available from stdlib.h.
+ */
+
+#cmakedefine01 HAVE_SETENV
+
+/*
+ * HAVE_TRUNC:
+ *
+ * Whether or not POSIX trunc() is available from math.h.
+ */
+
+#cmakedefine01 HAVE_TRUNC
+
+/*
+ * Do we have various image libraries?
+ */
+
+#cmakedefine HAVE_LIBPNG 1
+#cmakedefine HAVE_LIBZ 1
+#cmakedefine HAVE_LIBJPEG 1
+
+/*
+ * Which header file do we include for libpng?
+ *   ifdef HAVE_PNG_H : <png.h>
+ *   else             : <libpng/png.h>
+ * There is no other choice.
+ */
+
+#cmakedefine HAVE_PNG_H 1
+
+/*
+ * Do we have the png_xyz() functions?
+ */
+
+#cmakedefine HAVE_PNG_GET_VALID 1
+#cmakedefine HAVE_PNG_SET_TRNS_TO_ALPHA 1
+
+
+/*
+ * Do we have POSIX threading?
+ */
+
+#cmakedefine HAVE_PTHREAD 1
+#cmakedefine HAVE_PTHREAD_H 1
+
+/*
+ * Do we have PTHREAD_MUTEX_RECURSIVE?
+ */
+
+#cmakedefine HAVE_PTHREAD_MUTEX_RECURSIVE 1
+
+/*
+ * Do we have the ALSA library?
+ */
+
+#cmakedefine HAVE_ALSA_ASOUNDLIB_H 1
+
+/*
+ * Do we have the long long type?
+ */
+
+#cmakedefine HAVE_LONG_LONG 1
+
+#ifdef HAVE_LONG_LONG
+#  define FLTK_LLFMT	"%lld"
+#  define FLTK_LLCAST	(long long)
+#else
+#  define FLTK_LLFMT	"%ld"
+#  define FLTK_LLCAST	(long)
+#endif /* HAVE_LONG_LONG */
+
+/*
+ * Do we have the dlsym() function and header?
+ */
+
+#cmakedefine01 HAVE_DLFCN_H
+#cmakedefine01 HAVE_DLSYM
+
+/*
+ * Do we want print support?
+ */
+
+#cmakedefine FL_NO_PRINT_SUPPORT 1
+
+/*
+ * Do we use GDI+ to get antialiased graphics?
+ */
+
+#ifdef _WIN32
+#cmakedefine01 USE_GDIPLUS
+#endif
+
+/*
+ * Do we want filename handling and a filechooser?
+ */
+
+#cmakedefine FL_CFG_NO_FILESYSTEM_SUPPORT 1