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