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There is an incompatibility between using "struct timespec" in the GNU compiler with the -std=c99 option (Linux OS). The compiler complains that

FLA_Clock.c: In function ‘FLA_Clock_helper’:
FLA_Clock.c:41:21: error: storage size of ‘ts’ isn’t known
struct timespec ts;

A quick fix that worked is using -std=gnu99 instead.

Hi, this is no big issue and I can handle it myself, but I feel it's better to point it out. Here it is:

When typing make HelloWorld under the directory Assignments/Week0/C/, it would report such error message:

/usr/bin/ld: cannot find /root/blis/lib/libblis.a: No such file or directory
collect2: error: ld returned 1 exit status
make: *** [Makefile:27: driver.x] Error 1

it turns out that, for the latest version of branch master of the blis project, the generated library libblis.a doesn't reside in the path /root/blis/lib, but instead, the path /root/blis/lib/haswell, this is the cause of the error. for me, I modified the Makefile on the line defining the variable BLAS_LIB to be BLAS_LIB := $(HOME)/blis/lib/haswell/libblis.a, to solve this issue. you can solve this issue in the way you see fit.

After compiling the hello world example in week0, I noticed git produced the following output

these object and executable files probably shouldn't ever be committed to the source tree.
Recommend adding a simple .gitignore file at the root of the project which can tell git to ignore certain files

# ignores all object files and executables that may be generated when compiling
*.o
*.x