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43357: isinf/isnan can be macros so need custom configure tests
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2018-08-31 Oliver Kiddle <okiddle@yahoo.co.uk>
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* 43357: configure.ac: isinf/isnan can be macros rather
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than functions so need a custom configure test
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* unposted: Completion/Unix/Command/_git: git describe's
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--long and --abbrev options are not mutually exclusive
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22
configure.ac
22
configure.ac
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@ -1278,7 +1278,6 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \
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erand48 open_memstream \
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posix_openpt \
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wctomb iconv \
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isinf isnan \
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grantpt unlockpt ptsname \
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htons ntohs \
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regcomp regexec regerror regfree \
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@ -1291,6 +1290,27 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \
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setutxent getutxent endutxent getutent)
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AC_FUNC_STRCOLL
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# isinf() and isnan() can exist as either functions or macros.
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AH_TEMPLATE([HAVE_ISINF],
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[Define to 1 if you have the `isinf' macro or function.])
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AC_MSG_CHECKING([for isinf])
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AC_LINK_IFELSE([AC_LANG_SOURCE(
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[[#include <math.h>
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int main () { return (isinf(1.0) != 0); }]])],
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[AC_MSG_RESULT([yes])
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AC_DEFINE([HAVE_ISINF])],
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[AC_MSG_RESULT([no])])
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AH_TEMPLATE([HAVE_ISNAN],
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[Define to 1 if you have the `isnan' macro or function.])
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AC_MSG_CHECKING([for isnan])
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AC_LINK_IFELSE([AC_LANG_SOURCE([[
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#include <math.h>
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int main () { return (isnan(1.0) != 0); }]])],
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[AC_MSG_RESULT([yes])
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AC_DEFINE([HAVE_ISNAN])],
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[AC_MSG_RESULT([no])])
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AH_TEMPLATE([REALPATH_ACCEPTS_NULL],
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[Define if realpath() accepts NULL as its second argument.])
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AC_CACHE_CHECK([if realpath accepts NULL],
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