1*a939078aSHiroo HAYASHI# isblank.m4 serial 3 2*a939078aSHiroo HAYASHIdnl Copyright (C) 2009-2021 Free Software Foundation, Inc. 3*a939078aSHiroo HAYASHIdnl This file is free software; the Free Software Foundation 4*a939078aSHiroo HAYASHIdnl gives unlimited permission to copy and/or distribute it, 5*a939078aSHiroo HAYASHIdnl with or without modifications, as long as this notice is preserved. 6*a939078aSHiroo HAYASHI 7*a939078aSHiroo HAYASHIAC_DEFUN([gl_FUNC_ISBLANK], 8*a939078aSHiroo HAYASHI[ 9*a939078aSHiroo HAYASHI dnl Persuade glibc <ctype.h> to declare isblank(). 10*a939078aSHiroo HAYASHI AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) 11*a939078aSHiroo HAYASHI 12*a939078aSHiroo HAYASHI AC_REQUIRE([gl_CTYPE_H_DEFAULTS]) 13*a939078aSHiroo HAYASHI AC_CHECK_FUNCS_ONCE([isblank]) 14*a939078aSHiroo HAYASHI if test $ac_cv_func_isblank = no; then 15*a939078aSHiroo HAYASHI HAVE_ISBLANK=0 16*a939078aSHiroo HAYASHI fi 17*a939078aSHiroo HAYASHI]) 18