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build: Mismatch between gint64 and int64_t in OSX 64-bit

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Check for compile warnings when assigning an int64_t* to a long*,
make gint64 a long long if they occur and assigning an int64_t* to
a long long* doesn't.

Modified by Philip Withnall <withnall@endlessm.com> to support Meson as
well as autotools.

https://gitlab.gnome.org/GNOME/glib/issues/972
This commit is contained in:
John Ralls 2014-12-13 16:38:51 -08:00 committed by Philip Withnall
parent f6703db378
commit 5df3f42d7b
2 changed files with 89 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
configure.ac
View File

@ -834,6 +834,41 @@ int main ()
AC_MSG_RESULT($glib_ssize_type)
dnl Some platforms (Apple) hard-code int64_t to long long instead of
dnl using long on 64-bit architectures. This can cause type mismatch
dnl warnings when trying to interface with code using the standard
dnl library type. Test for the warnings and set gint64 to whichever
dnl works.
dnl
AS_IF([test $ac_cv_sizeof_long_long = $ac_cv_sizeof_long], [
GLIB_CHECK_COMPILE_WARNINGS([AC_LANG_SOURCE([[
#if defined(_AIX) && !defined(__GNUC__)
#pragma options langlvl=stdc99
#endif
#include <stdint.h>
#include <stdio.h>
int main ()
{
int64_t i1 = 1;
long *i2 = &i1;
return 1;
}
]])],[ glib_cv_int64_t=long ],
[GLIB_CHECK_COMPILE_WARNINGS([AC_LANG_SOURCE([[
#if defined(_AIX) && !defined(__GNUC__)
#pragma options langlvl=stdc99
#endif
#include <stdint.h>
#include <stdio.h>
int main ()
{
int64_t i1 = 1;
long long *i2 = &i1;
return 1;
}
]])],[ glib_cv_int64_t=long_long ])])
])
# Check for some functions
AC_CHECK_FUNCS(lstat strsignal vsnprintf stpcpy strcasecmp strncasecmp poll vasprintf setenv unsetenv getc_unlocked readlink symlink fdwalk mkostemp link)
AC_CHECK_FUNCS(lchmod lchown fchmod fchown utimes getresuid)
@ -3018,13 +3053,25 @@ $ac_cv_sizeof_int)
guint64_constant='(val)'
;;
$ac_cv_sizeof_long)
gint64=long
gint64_modifier='"l"'
gint64_format='"li"'
guint64_format='"lu"'
glib_extension=
gint64_constant='(val##L)'
guint64_constant='(val##UL)'
if test "x$glib_cv_int64_t" = "xlong_long"; then
gint64='long long'
if test -n "$glib_cv_long_long_format"; then
gint64_modifier='"'$glib_cv_long_long_format'"'
gint64_format='"'$glib_cv_long_long_format'i"'
guint64_format='"'$glib_cv_long_long_format'u"'
fi
glib_extension='G_GNUC_EXTENSION '
gint64_constant='(G_GNUC_EXTENSION (val##LL))'
guint64_constant='(G_GNUC_EXTENSION (val##ULL))'
else
gint64=long
gint64_modifier='"l"'
gint64_format='"li"'
guint64_format='"lu"'
glib_extension=
gint64_constant='(val##L)'
guint64_constant='(val##UL)'
fi
;;
$ac_cv_sizeof_long_long)
gint64='long long'

37
meson.build
View File

@ -1073,6 +1073,39 @@ else
ssizet_size = cc.sizeof('ssize_t')
endif
# Some platforms (Apple) hard-code int64_t to long long instead of
# using long on 64-bit architectures. This can cause type mismatch
# warnings when trying to interface with code using the standard
# library type. Test for the warnings and set gint64 to whichever
# works.
if long_long_size == long_size
if cc.compiles('''#if defined(_AIX) && !defined(__GNUC__)
#pragma options langlvl=stdc99
#endif
#pragma GCC diagnostic error "-Wincompatible-pointer-types"
#include <stdint.h>
#include <stdio.h>
int main () {
int64_t i1 = 1;
long *i2 = &i1;
return 1;
}''', name : 'int64_t is long')
int64_t_typedef = 'long'
elif cc.compiles('''#if defined(_AIX) && !defined(__GNUC__)
#pragma options langlvl=stdc99
#endif
#pragma GCC diagnostic error "-Wincompatible-pointer-types"
#include <stdint.h>
#include <stdio.h>
int main () {
int64_t i1 = 1;
long long *i2 = &i1;
return 1;
}''', name : 'int64_t is long long')
int64_t_typedef = 'long long'
endif
endif
int64_m = 'll'
char_align = cc.alignment('char')
short_align = cc.alignment('short')
@ -1149,7 +1182,7 @@ if int_size == 8
gint64_constant='(val)'
guint64_constant='(val)'
guint64_align = int_align
elif long_size == 8
elif long_size == 8 and (long_long_size != long_size or int64_t_typedef == 'long')
gint64 = 'long'
glib_extension=''
gint64_modifier='l'
@ -1158,7 +1191,7 @@ elif long_size == 8
gint64_constant='(val##L)'
guint64_constant='(val##UL)'
guint64_align = long_align
elif long_long_size == 8
elif long_long_size == 8 and (long_long_size != long_size or int64_t_typedef == 'long long')
gint64 = 'long long'
glib_extension='G_GNUC_EXTENSION '
gint64_modifier=int64_m