[PATCH v2 2/4] Rewrite find_cxx_header config configure.ac

[Adhemerval Zanella Netto]

On 07/11/22 10:22, Florian Weimer wrote:
> * Adhemerval Zanella via Libc-alpha:
> 
>> diff --git a/configure b/configure
>> index fc3d7842de..e23ea95a49 100755
>> --- a/configure
>> +++ b/configure
>> @@ -5669,8 +5669,8 @@ fi
>>  # copy of those headers in Makerules.
>>  if test -n "$CXX"; then
>>    find_cxx_header () {
>> -    echo "#include <$1>" | $CXX -M -MP -x c++ - 2>/dev/null \
>> -	 | sed -n "\,$1:,{s/:\$//;p}"
>> +    echo "#include <$1>" | $CXX -H -fsyntax-only -x c++ - 2>&1 \
>> +	 | awk '$1 == "."{print $2}'
>>    }
>>    CXX_CSTDLIB_HEADER="$(find_cxx_header cstdlib)"
>>    CXX_CMATH_HEADER="$(find_cxx_header cmath)"
> 
> Shouldn't this use $ac_cv_prog_AWK?

It should be $AWK in fact, I will fix it before commit.