gen-casefold-txt.pl and gen-casemap-txt.pl are licensed under GPLv2+, so
they are not touched by this commit.

A lot of *.c files in tests/ don't have a license header.

https://bugzilla.gnome.org/show_bug.cgi?id=776504

Visual C++ does not like function declarations being different from
their prototypes, so make the prototypes match the declarations by
decorating them with G_MODULE_EXPORT.

https://bugzilla.gnome.org/show_bug.cgi?id=711047

We only want to control the default visibility for our five main
installable libraries: libglib, libgthread, libgmodule, libgobject,
libgio.  We should therefore only set -fvisibility=hidden when building
those.

Use a separate substitution variable for this purpose.

Using CFLAGS directly leads to some modules built in testcases not
exporting their symbols (and then the tests fail).  It also affects the
fam file monitoring module.

Colin had originally done it this way in his visibility patch series but
I failed to understand why so I didn't copy it.  Now I do.

Also: revert changes made to two testcases in an attempt to work around
this issue.

https://bugzilla.gnome.org/show_bug.cgi?id=691756

Avoid having visibility attribute directly in the code by
adding a _GLIB_EXTERN-decorated declaration for the exported
variables.

Otherwise we fail to build with -Werror=missing-prototypes.

https://bugzilla.gnome.org/show_bug.cgi?id=687385

2005-12-05  Matthias Clasen  <mclasen@redhat.com>

	* tests/libmoduletestplugin_a.c: Fix compiler warnings.

	* glib/gatomic.c: In the ia64 implementation, use
	__sync builtin without _si or _di suffix.  (#321229,
	Stanislav Brabec, patch by Andreas Schwab)

2002-07-04  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* tests/*.c: Added #undef G_DISABLE_ASSERT and #undef G_LOG_DOMAIN
	throughout the files, which didn't already have them. (#87312)