#149 Build in cygwin error: '::asprintf' has not been declared

[dinostray]

In cygwin(x64), I run the following command:

./configure --build=x86_64-pc-cygwin
make

then I get the error:
PThreads.cpp:22:16: error: '::asprintf' has not been declared
int size = ::asprintf(&buff_alloc, "%lu", pthread_self()); // thread id unsigned

I got info from:
https://ubuntuforums.org/showthread.php?t=279801
Then I know I should define _GNU_SOURCE first

[dinostray]

By the way, If I didn't use --build=x86_64-pc-cygwin, the ./configure command will get error.

[Alexander Perepelkin]

By the way, If I didn't use --build=x86_64-pc-cygwin, the ./configure command will get error.

Something like
configure: error: cannot guess build type; you must specify one
I guess?

[Alexander Perepelkin]

Then I know I should define _GNU_SOURCE first

I tried to build in cygwin just now and didn't experienced any errors.
It must be cygwin-specific.

Thanks for this report. It just seems to me that this definition of _GNU_SOURCE
should be put either into build script, or one of include/log4cpp/config*.h files

[Alexander Perepelkin]

Autotools are updated with commit https://sourceforge.net/p/log4cpp/codegit/ci/99bf327fed032073cb6e3e5f5b19e4f8005a54b2/ , x86_64-pc-cygwin configuration is included.
Passing the option explicitly like you mentioned:

./configure --build=x86_64-pc-cygwin

is not required anymore

This simple command should suffice:

./configure
make