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| 1 | dnl From Gordon Matzigkeit.
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| 2 | dnl Test for the GNU C Library.
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| 3 | dnl FIXME: this should migrate into libit.
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| 4 |
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| 5 | AC_DEFUN(AM_GLIBC,
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| 6 | [
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| 7 | AC_CACHE_CHECK(whether we are using the GNU C Library,
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| 8 | ac_cv_gnu_library,
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| 9 | [AC_EGREP_CPP([Thanks for using GNU],
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| 10 | [
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| 11 | #include <features.h>
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| 12 | #ifdef __GNU_LIBRARY__
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| 13 | Thanks for using GNU
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| 14 | #endif
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| 15 | ],
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| 16 | ac_cv_gnu_library=yes,
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| 17 | ac_cv_gnu_library=no)
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| 18 | ]
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| 19 | )
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| 20 | AC_CACHE_CHECK(for version 2 of the GNU C Library,
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| 21 | ac_cv_glibc,
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| 22 | [AC_EGREP_CPP([Thanks for using GNU too],
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| 23 | [
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| 24 | #include <features.h>
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| 25 | #ifdef __GLIBC__
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| 26 | Thanks for using GNU too
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| 27 | #endif
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| 28 | ],
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| 29 | ac_cv_glibc=yes, ac_cv_glibc=no)
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| 30 | ]
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| 31 | )
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| 32 | ]
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| 33 | )
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