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Hossein c16158772d Using .md extension/Markdown syntax for modules README Renaming all README files for all top level modules to README.md, applying no content change at this stage to be able to track history of the files. These files should be edited to use correct Markdown syntax later. Change-Id: I542fa3f3d32072156f16eaad2211a397cc212665 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/112977 Tested-by: Jenkins Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>		2021-03-24 11:46:14 +01:00
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config_box2d.h.in
config_buildid.h.in
config_cairo_canvas.h.in
config_clang.h.in
config_cxxabi.h.in
config_dbus.h.in
config_dconf.h.in
config_eot.h.in
config_extensions.h.in
config_feature_desktop.h.in
config_feature_opencl.h.in
config_features.h.in
config_firebird.h.in
config_folders.h.in
config_fuzzers.h.in
config_gio.h.in
config_global.h.in
config_gpgme.h.in
config_java.h.in
config_langs.h.in
config_lgpl.h.in
config_libcxx.h.in
config_liblangtag.h.in
config_locales.h.in
config_mpl.h.in
config_oauth2.h.in
config_oox.h.in
config_options.h.in
config_options_calc.h.in
config_poppler.h.in
config_probes.h.in
config_python.h.in
config_skia.h.in
config_typesizes.h.in
config_vcl.h.in
config_vclplug.h.in
config_vendor.h.in
config_version.h.in
config_writerperfect.h.in
config_zxing.h.in
README.md	Using .md extension/Markdown syntax for modules README	2021-03-24 11:46:14 +01:00

These are configuration files for various features as detected by configure.

Include only those files you need (in order to reduce rebuilds when a setting changes).

Settings here are only C/C++ #define directives, so they apply only to C/C++ source, not to Makefiles.

Adding a new setting:

do AC_DEFINE(HAVE_FOO) in configure.ac when a setting should be set
choose the proper config_host/config_XXX.h file to use
- if it is a global setting (such as availability of a compiler feature), use config_host/config_global.h
- otherwise check if there is a matching config_host/config_XXX.h file
- if none matches, add a new one:
  - add config_host/config_XXX.h.in here, with just #ifndef include guard
  - add AC_CONFIG_HEADERS([config_host/config_XXX.h]) next to the others in configure.ac
add #define HAVE_FOO 0 to the config_host/config_XXX.h , possibly with a comment (do not use #undef HAVE_FOO, unless the setting has more values than on/off)
add #include <config_XXX.h> before any #if HAVE_FOO in a source file
make sure you use #if HAVE_FOO for on/off settings, do not use #ifdef