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Diffstat (limited to 'm4/isblank.m4')
| -rw-r--r-- | m4/isblank.m4 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/m4/isblank.m4 b/m4/isblank.m4 new file mode 100644 index 0000000..809eab4 --- /dev/null +++ b/m4/isblank.m4 @@ -0,0 +1,17 @@ +# isblank.m4 serial 3 +dnl Copyright (C) 2009-2023 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_ISBLANK], +[ + dnl Persuade glibc <ctype.h> to declare isblank(). + AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + + AC_REQUIRE([gl_CTYPE_H_DEFAULTS]) + AC_CHECK_FUNCS_ONCE([isblank]) + if test $ac_cv_func_isblank = no; then + HAVE_ISBLANK=0 + fi +]) |