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| 1 | #serial 2
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| 2 |
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| 3 | # autoconf tests required for use of xstrtoumax.c
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| 4 |
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| 5 | AC_DEFUN(jm_AC_PREREQ_XSTRTOUMAX,
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| 6 | [
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| 7 | AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
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| 8 | AC_REQUIRE([jm_AC_TYPE_UNSIGNED_LONG_LONG])
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| 9 | AC_CHECK_HEADERS(stdlib.h)
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| 10 |
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| 11 | AC_CACHE_CHECK([whether <inttypes.h> defines strtoumax as a macro],
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| 12 | jm_cv_func_strtoumax_macro,
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| 13 | AC_EGREP_CPP([inttypes_h_defines_strtoumax], [#include <inttypes.h>
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| 14 | #ifdef strtoumax
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| 15 | inttypes_h_defines_strtoumax
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| 16 | #endif],
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| 17 | jm_cv_func_strtoumax_macro=yes,
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| 18 | jm_cv_func_strtoumax_macro=no))
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| 19 |
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| 20 | if test "$jm_cv_func_strtoumax_macro" != yes; then
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| 21 | AC_REPLACE_FUNCS(strtoumax)
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| 22 | fi
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| 23 |
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| 24 | dnl We don't need (and can't compile) the replacement strtoull
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| 25 | dnl unless the type `unsigned long long' exists.
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| 26 | dnl Also, only the replacement strtoumax invokes strtoull,
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| 27 | dnl so we need the replacement strtoull only if strtoumax does not exist.
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| 28 | case "$ac_cv_type_unsigned_long_long,$jm_cv_func_strtoumax_macro,$ac_cv_func_strtoumax" in
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| 29 | yes,no,no)
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| 30 | AC_REPLACE_FUNCS(strtoull)
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| 31 | ;;
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| 32 | esac
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| 33 |
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| 34 | ])
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