49 lines
1.4 KiB
Diff
49 lines
1.4 KiB
Diff
From 82d837b76618a773485b96e38b7b91083a7437e8 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Fri, 20 Feb 2015 05:05:45 +0000
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Subject: [PATCH 06/19] configure: Check for additional features that uclibc
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doesnt support
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This helps in supporting uclibc which does not have all features that
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glibc might have
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Upstream-Status: Denied [no desire for uclibc support]
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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---
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configure.ac | 18 ++++++++++++++++++
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1 file changed, 18 insertions(+)
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diff --git a/configure.ac b/configure.ac
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index 7f6b3b9..7c4b5a2 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -110,6 +110,24 @@ AC_PATH_PROG([UMOUNT_PATH], [umount], [/usr/bin/umount], [$PATH:/usr/sbin:/sbin]
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AS_IF([! ln --relative --help > /dev/null 2>&1], [AC_MSG_ERROR([*** ln doesn't support --relative ***])])
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+# check for few functions not implemented in uClibc
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+
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+AC_CHECK_FUNCS_ONCE(mkostemp execvpe posix_fallocate)
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+
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+# check for %ms format support - assume always no if cross compiling
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+
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+AC_MSG_CHECKING([whether %ms format is supported by *scanf])
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+
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+AC_LINK_IFELSE(
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+ [AC_LANG_PROGRAM([
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+ #include <stdio.h>
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+ ],[
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+ char *buf1, *buf2, *buf3, str="1 2.3 abcde" ;
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+ int rc = sscanf(str, "%ms %ms %ms", &buf1, &buf2, &buf3) ;
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+ return (rc==3)?0:1;])],
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+ [AC_DEFINE([HAVE_MSFORMAT], [1], [Define if %ms format is supported by *scanf.])],
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+ [AC_MSG_RESULT([no])])
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+
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M4_DEFINES=
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AC_CHECK_TOOL(OBJCOPY, objcopy)
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--
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2.10.2
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