GCC fails to find headers under Ubuntu

[Gordon McKay]

Hi,

I have a C project, star-charter, which is a straight clone from GitHub.

>From my $Home in Ubuntu I have a folder, Cprojects, where I keep all my C/C++ projects, each in a separate sub-folder.

My start-charter GitHub clone is in the star-charter subfolder

The makefile is in the star-charter subfolder

All of the source is in the src sub folder of star-charter

Main.c is in the src sub-folder.

Various libraries and headers are in sub-folders of src, for eample the gsl headers

When I attempt to compile main.c which refere to the gsl headers in INCLUDE statements with the sub-folder gsl and header name , a file not found error is thrown. 

I have tried everything to correct this apparenty simple problem.

Can you help

Thanks
G.McKay

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