$(abspath) return empty on some OS

[yanni4night]

It's really weird that $(abspath .deps/$(*D)) returns empty on my Linux,then

mkdir: too few arguments
Try `mkdir --help' for more information.

But it works well on my OSX

[jonas]

What Linux version and distribution are you using? It would also be helpful
to know which make command (probably GNU Make) and its version?

[yanni4night]

It should be CentOS under Linux kernel version 2.6.9_7-7-0-0,but I'm not sure about that,it's a company's VM which I can ssh only.And I'm using GNU Make 3.80.

I remove abspath part,and it works.

[jonas]

$(abspath) was added in 8a5a99d to fix an issue on Mac OS X where mkdir -p .deps/. fails with mkdir: .deps/.: No such file or directory.

From googling it looks like the function $(abspath) is not available in GNU Make version 3.80.

[jonas]

It was an issue in Mac OS 10.9 but is fixed in version 10.10 ...

[yanni4night]

Right, abspath and realpath are both supported since 3.81, so any way to detect that?

[jonas]

Back when the workaround was added, most source code files lived in the root folder. They have since been moved to the src folder, which means that $(*D) can no longer be . and the workaround is no longer needed.

[jonas]

Glad to have this sorted out.

[yanni4night]

Thanks for the fixed.