From 43e9a1dc974c61d208ea5b39ba0b387368290a93 Mon Sep 17 00:00:00 2001 From: Oliver Kiddle Date: Fri, 31 Aug 2018 15:45:49 +0200 Subject: 43357: isinf/isnan can be macros so need custom configure tests --- ChangeLog | 3 +++ configure.ac | 22 +++++++++++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index 8dd3bd9e8..b2af46224 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2018-08-31 Oliver Kiddle + * 43357: configure.ac: isinf/isnan can be macros rather + than functions so need a custom configure test + * unposted: Completion/Unix/Command/_git: git describe's --long and --abbrev options are not mutually exclusive diff --git a/configure.ac b/configure.ac index 5e13c0f11..5513e25f1 100644 --- a/configure.ac +++ b/configure.ac @@ -1278,7 +1278,6 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \ erand48 open_memstream \ posix_openpt \ wctomb iconv \ - isinf isnan \ grantpt unlockpt ptsname \ htons ntohs \ regcomp regexec regerror regfree \ @@ -1291,6 +1290,27 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \ setutxent getutxent endutxent getutent) AC_FUNC_STRCOLL +# isinf() and isnan() can exist as either functions or macros. +AH_TEMPLATE([HAVE_ISINF], + [Define to 1 if you have the `isinf' macro or function.]) +AC_MSG_CHECKING([for isinf]) +AC_LINK_IFELSE([AC_LANG_SOURCE( +[[#include +int main () { return (isinf(1.0) != 0); }]])], + [AC_MSG_RESULT([yes]) + AC_DEFINE([HAVE_ISINF])], + [AC_MSG_RESULT([no])]) + +AH_TEMPLATE([HAVE_ISNAN], + [Define to 1 if you have the `isnan' macro or function.]) +AC_MSG_CHECKING([for isnan]) +AC_LINK_IFELSE([AC_LANG_SOURCE([[ +#include +int main () { return (isnan(1.0) != 0); }]])], + [AC_MSG_RESULT([yes]) + AC_DEFINE([HAVE_ISNAN])], + [AC_MSG_RESULT([no])]) + AH_TEMPLATE([REALPATH_ACCEPTS_NULL], [Define if realpath() accepts NULL as its second argument.]) AC_CACHE_CHECK([if realpath accepts NULL], -- cgit 1.4.1