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Re: [Qemu-devel] Re: [PATCHv2] configure: verify stdio.h
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] Re: [PATCHv2] configure: verify stdio.h |
Date: |
Tue, 26 Jan 2010 21:31:12 +0200 |
2010/1/26 Måns Rullgård <address@hidden>:
> "Michael S. Tsirkin" <address@hidden> writes:
>
>> Verify that stdio.h supports %lld %zd.
>> Some migw variants don't unless requested explicitly (see
>> http://www.mail-archive.com/address@hidden/msg00417.html)
>> ), detect them early.
>>
>> Signed-off-by: Michael S. Tsirkin <address@hidden>
>> Acked-by: Juan Quintela <address@hidden>
>>
>> ---
>>
>> changes from v1:
>> removed leftover chunk
>>
>> configure | 20 ++++++++++++++++++++
>> 1 files changed, 20 insertions(+), 0 deletions(-)
>>
>> diff --git a/configure b/configure
>> index 5631bbb..6ba06d6 100755
>> --- a/configure
>> +++ b/configure
>> @@ -123,6 +123,26 @@ else
>> exit 1
>> fi
>>
>> +# Check that stdio.h compiler is sane: some
>> +# mingw variants do not support %z %l that we rely on
>> +cat > $TMPC <<EOF
>> +#include <stddef.h>
>> +#include <stdio.h>
>> +size_t z = 1;
>> +long long ll = 2;
>> +int main(void) {
>> + printf("z=%zd;ll=%lld;\n", z, ll);
>> + return 0;
>> +}
>> +EOF
>> +
>> +if compile_prog && ($TMPE | grep "z=1;ll=2;" > /dev/null); then
>> + : C compiler works ok
>> +else
>> + echo "ERROR: \"$cc\" does not have a working stdio.h"
>> + exit 1
>> +fi
>> +
>> check_define() {
>> cat > $TMPC <<EOF
>> #if !defined($1)
>
> This makes cross-compiling impossible. Is that really desirable?
I'd rather drop %ll and %z.