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dnl Check for PATH_MAX in limits.h, and define a default value if not found
dnl This is a workaround for systems not providing PATH_MAX, like GNU/Hurd
dnl EFL_CHECK_PATH_MAX([DEFAULT_VALUE_IF_NOT_FOUND])
dnl
dnl If PATH_MAX is not defined in <limits.h>, defines it
dnl to DEFAULT_VALUE_IF_NOT_FOUND if it exists, or fallback
dnl to using 4096
AC_DEFUN([EFL_CHECK_PATH_MAX],
[
default_max=m4_default([$1], "4096")
AC_LANG_PUSH([C])
AC_MSG_CHECKING([for PATH_MAX in limits.h])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <limits.h>
]],
[[
int i = PATH_MAX;
]])],
[AC_MSG_RESULT([yes])],
[
AC_DEFINE_UNQUOTED([PATH_MAX],
[${default_max}],
[default value since PATH_MAX is not defined])
AC_MSG_RESULT([no: using ${default_max}])
])
AC_LANG_POP([C])
])
dnl end of efl_path_max.m4
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