meson: define _FILE_OFFSET_BITS=64 for MinGW. See #1476
The autotools build set it by default and we use off_t in various places,
even on Windows. Also set it with the meson build to avoid any regressions.
Ideally we shouldn't use off_t and use 64bit capable API on Windows instead, so
we get large file support with MSVC as well.
diff --git a/meson.build b/meson.build
index f758365..20bdb37 100644
--- a/meson.build
+++ b/meson.build
@@ -114,6 +114,14 @@
glib_conf.set('BROKEN_POLL', true)
endif
+if host_system == 'windows' and cc.get_id() != 'msvc'
+ # FIXME: Ideally we shouldn't depend on this on Windows and should use
+ # 64 bit capable Windows API that also works with MSVC.
+ # The autotools build did set this for mingw and while meson sets it
+ # for gcc/clang by default, it doesn't do so on Windows.
+ glib_conf.set('_FILE_OFFSET_BITS', 64)
+endif
+
# Check for GNU visibility attributes
g_have_gnuc_visibility = cc.compiles('''
void
