From bb6f1d8a000b337280541afde7cccdcfe03cdeb1 Mon Sep 17 00:00:00 2001 From: Khem Raj Date: Fri, 20 Feb 2015 05:05:45 +0000 Subject: [PATCH 06/36] configure: Check for additional features that uclibc doesnt support This helps in supporting uclibc which does not have all features that glibc might have Upstream-Status: Denied [no desire for uclibc support] Signed-off-by: Khem Raj --- configure.ac | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/configure.ac b/configure.ac index f51533c..0239fd0 100644 --- a/configure.ac +++ b/configure.ac @@ -112,6 +112,24 @@ AC_PATH_PROG([UMOUNT_PATH], [umount], [/usr/bin/umount], [$PATH:/usr/sbin:/sbin] AS_IF([! ln --relative --help > /dev/null 2>&1], [AC_MSG_ERROR([*** ln doesn't support --relative ***])]) +# check for few functions not implemented in uClibc + +AC_CHECK_FUNCS_ONCE(mkostemp execvpe posix_fallocate) + +# check for %ms format support - assume always no if cross compiling + +AC_MSG_CHECKING([whether %ms format is supported by *scanf]) + +AC_LINK_IFELSE( + [AC_LANG_PROGRAM([ + #include + ],[ + char *buf1, *buf2, *buf3, str="1 2.3 abcde" ; + int rc = sscanf(str, "%ms %ms %ms", &buf1, &buf2, &buf3) ; + return (rc==3)?0:1;])], + [AC_DEFINE([HAVE_MSFORMAT], [1], [Define if %ms format is supported by *scanf.])], + [AC_MSG_RESULT([no])]) + M4_DEFINES= AC_CHECK_TOOL(OBJCOPY, objcopy) -- 1.8.3.1