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| 1 | #serial 2
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| 2 |
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| 3 | # Test for the GNU C Library, version 2.1 or newer.
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| 4 | # From Bruno Haible.
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| 5 |
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| 6 | AC_DEFUN([jm_GLIBC21],
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| 7 | [
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| 8 | AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
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| 9 | ac_cv_gnu_library_2_1,
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| 10 | [AC_EGREP_CPP([Lucky GNU user],
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| 11 | [
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| 12 | #include <features.h>
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| 13 | #ifdef __GNU_LIBRARY__
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| 14 | #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
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| 15 | Lucky GNU user
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| 16 | #endif
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| 17 | #endif
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| 18 | ],
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| 19 | ac_cv_gnu_library_2_1=yes,
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| 20 | ac_cv_gnu_library_2_1=no)
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| 21 | ]
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| 22 | )
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| 23 | AC_SUBST(GLIBC21)
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| 24 | GLIBC21="$ac_cv_gnu_library_2_1"
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| 25 | ]
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| 26 | )
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