| Patrick Williams | d8c66bc | 2016-06-20 12:57:21 -0500 | [diff] [blame] | 1 | From bb6f1d8a000b337280541afde7cccdcfe03cdeb1 Mon Sep 17 00:00:00 2001 |
| 2 | From: Khem Raj <raj.khem@gmail.com> |
| 3 | Date: Fri, 20 Feb 2015 05:05:45 +0000 |
| 4 | Subject: [PATCH 06/36] configure: Check for additional features that uclibc |
| 5 | doesnt support |
| 6 | |
| 7 | This helps in supporting uclibc which does not have all features that |
| 8 | glibc might have |
| 9 | |
| 10 | Upstream-Status: Denied [no desire for uclibc support] |
| 11 | |
| 12 | Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| 13 | --- |
| 14 | configure.ac | 18 ++++++++++++++++++ |
| 15 | 1 file changed, 18 insertions(+) |
| 16 | |
| 17 | diff --git a/configure.ac b/configure.ac |
| 18 | index f51533c..0239fd0 100644 |
| 19 | --- a/configure.ac |
| 20 | +++ b/configure.ac |
| 21 | @@ -112,6 +112,24 @@ AC_PATH_PROG([UMOUNT_PATH], [umount], [/usr/bin/umount], [$PATH:/usr/sbin:/sbin] |
| 22 | |
| 23 | AS_IF([! ln --relative --help > /dev/null 2>&1], [AC_MSG_ERROR([*** ln doesn't support --relative ***])]) |
| 24 | |
| 25 | +# check for few functions not implemented in uClibc |
| 26 | + |
| 27 | +AC_CHECK_FUNCS_ONCE(mkostemp execvpe posix_fallocate) |
| 28 | + |
| 29 | +# check for %ms format support - assume always no if cross compiling |
| 30 | + |
| 31 | +AC_MSG_CHECKING([whether %ms format is supported by *scanf]) |
| 32 | + |
| 33 | +AC_LINK_IFELSE( |
| 34 | + [AC_LANG_PROGRAM([ |
| 35 | + #include <stdio.h> |
| 36 | + ],[ |
| 37 | + char *buf1, *buf2, *buf3, str="1 2.3 abcde" ; |
| 38 | + int rc = sscanf(str, "%ms %ms %ms", &buf1, &buf2, &buf3) ; |
| 39 | + return (rc==3)?0:1;])], |
| 40 | + [AC_DEFINE([HAVE_MSFORMAT], [1], [Define if %ms format is supported by *scanf.])], |
| 41 | + [AC_MSG_RESULT([no])]) |
| 42 | + |
| 43 | M4_DEFINES= |
| 44 | |
| 45 | AC_CHECK_TOOL(OBJCOPY, objcopy) |
| 46 | -- |
| 47 | 1.8.3.1 |
| 48 | |