Binaries built by SEQ_CC do not use build flags such as CFLAGS CPPFLAGS LDFLAGS

[loqs]

This was partially addressed in 5d8cfaa which was reverted in 000d67f.
I am currently working around this with SEQ_CC="$CC $CPPFLAGS $CFLAGS $LDFLAGS" to add hardening such as FULL RELRO to cdfdiff ncoffsets pnetcdf-openmpi ncvalidator.
PnetCDF checkpoint.1.12.3 built using:

./configure --prefix=/usr --enable-shared --enable-netcdf4
make

[wkliao]

Reusing CFLAGS for MPI compilers when compiling utility programs designed to run sequentially
can cause problems in the cross-compile environment.

One way to solve the problem in your case is to introduce new environment variables, such as
SEQ_CFLAGS and SEQ_LDFLAGS. Will that work for your case? e.g.

./configure SEQ_CC=gcc SEQ_CFLAGS="-Wl,-z,relro,-z,now" SEQ_LDFLAGS="-lc"

[loqs]

New environment variables would work for my use case. Thank you very much for the fast response and explanation of the issue.

[wkliao]

Three environment variables SEQ_CFLAGS, SEQ_LDFLAGS, and SEQ_LIBS have
been added in PR #122, which has also been merged into the master branch.
If you would like to give it a try, please let me know if that works.

[loqs]

I have tried #122 and with SEQ_CFLAGS and SEQ_LDFLAGS set and the options are being applied. Thank you for the fast fix.