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Diffstat (limited to 'gl/m4/wmempcpy.m4')
| -rw-r--r-- | gl/m4/wmempcpy.m4 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gl/m4/wmempcpy.m4 b/gl/m4/wmempcpy.m4 new file mode 100644 index 0000000..9765039 --- /dev/null +++ b/gl/m4/wmempcpy.m4 @@ -0,0 +1,21 @@ +# wmempcpy.m4 serial 1 +dnl Copyright (C) 2020-2022 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_WMEMPCPY], +[ + AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) + + dnl Persuade glibc <wchar.h> to declare wmempcpy(). + AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + + dnl The wmempcpy() declaration in lib/wchar.in.h uses 'restrict'. + AC_REQUIRE([AC_C_RESTRICT]) + + AC_CHECK_FUNCS_ONCE([wmempcpy]) + if test $ac_cv_func_wmempcpy = no; then + HAVE_WMEMPCPY=0 + fi +]) |