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mhd_sys_extentions.m4: updated, workarounds for broken clang behaviour

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Evgeny Grin (Karlson2k)
2024-08-03 18:08:40 +02:00
parent 3b2f897d01
commit 5f9b22b21f
1 changed files with 16 additions and 16 deletions
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m4/mhd_sys_extentions.m4
+16 -16
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@@ -40,18 +40,23 @@
#
# LICENSE
#
# Copyright (c) 2016, 2017 Karlson2k (Evgeny Grin) <k2k@narod.ru>
# Copyright (c) 2016, 2017, 2024 Karlson2k (Evgeny Grin) <k2k@narod.ru>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 2
#serial 3
AC_DEFUN([MHD_SYS_EXT],[dnl
AC_PREREQ([2.64])dnl for AS_VAR_IF, AS_VAR_SET_IF, m4_ifnblank
AC_LANG_PUSH([C])dnl Use C language for simplicity
AC_LANG_ASSERT([C])dnl Only C is supported
m4_ifdef([_AC_UNDECLARED_BUILTIN],
[AC_DEFUN_ONCE([_AC_UNDECLARED_BUILTIN_]_AC_LANG_ABBREV,
[_AC_UNDECLARED_BUILTIN])]dnl
[AC_REQUIRE([_AC_UNDECLARED_BUILTIN_]_AC_LANG_ABBREV)]dnl
)dnl m4_ifdef _AC_UNDECLARED_BUILTIN
mhd_mse_sys_ext_defines=""
mhd_mse_sys_ext_flags=""
@@ -278,6 +283,8 @@ int main()
"
AC_CACHE_CHECK([[for useful system-specific features]],
[[mhd_cv_headers_useful_features_present]], [dnl
mhd_SYS_EXT_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $ac_[]_AC_LANG_ABBREV[]_undeclared_builtin_options"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
${mhd_mse_sys_ext_defines}
${mhd_mse_sys_features_src}
@@ -303,6 +310,8 @@ ${mhd_mse_sys_features_src}
])dnl
]
)dnl
CFLAGS="$mhd_SYS_EXT_SAVE_CFLAGS"
AS_UNSET([mhd_SYS_EXT_SAVE_CFLAGS])
]
)
@@ -366,7 +375,6 @@ ${mhd_mse_sys_features_src}
AS_UNSET([[mhd_mse_result]])
AS_UNSET([[mhd_mse_xopen_flags]])
AS_UNSET([[mhd_mse_sys_ext_flags]])
AC_LANG_POP([C])
])
@@ -761,6 +769,8 @@ $2
dnl Check whether features test works without _XOPEN_SOURCE and
dnl with disabled extensions (undefined most of
dnl predefined macros for specific requested mode).
mhd_SYS_EXT_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $ac_[]_AC_LANG_ABBREV[]_undeclared_builtin_options"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
_MHD_UNDEF_ALL_EXT
$src_Var
@@ -947,6 +957,8 @@ $src_Var
)
]
)
CFLAGS="$mhd_SYS_EXT_SAVE_CFLAGS"
AS_UNSET([mhd_SYS_EXT_SAVE_CFLAGS])
AS_UNSET([defs_Var])
AS_UNSET([src_Var])
AS_VAR_POPDEF([defs_Var])dnl
@@ -990,18 +1002,6 @@ AC_DEFUN([MHD_CHECK_HEADERS_PRESENCE], [dnl
])
#
# MHD_CHECK_HEADERS_PRESENCE_COMPACT(oneheader.h otherheader.h ...)
#
# Same as MHD_CHECK_HEADERS_PRESENCE, but a bit slower and produce more compact 'configure'.
AC_DEFUN([MHD_CHECK_HEADERS_PRESENCE_COMPACT], [dnl
for mhd_chk_Header in $1 ; do
MHD_CHECK_HEADER_PRESENCE([[${mhd_chk_Header}]])
done
])
#
# MHD_CHECK_BASIC_HEADERS_PRESENCE
#