search

xaptum / ecdaa

A C implementation of elliptic-curve-based Direct Anonymous Attestation (DAA) signatures. Created to support the Xaptum Edge Network Fabric, an IoT Network Solution.
https://www.xaptum.com
Apache License 2.0
45 stars 8 forks source link

Include issues when attempting to compile on Raspbian. #133

Open glfejer opened 4 years ago

glfejer commented 4 years ago

I got errors from the compiler saying that the AMCL include files could not be found. I built and installed the AMCL, but there were no amcl/big_256_28.h files anywhere on my system... but they were under amcl/include/big_256_28.h. There were a number of files like that -- all under /opt/amcl/include

To get it to compile, I changed all of the source files to add the /include path. I also had to add an include directory in the CMakeLists.txt file.

I'm not certain that I did the correct thing, but it seemed to work.

I checked it in under fej/rpi-compile

I had similar issues when compiling under a clean debian VM.

drbild commented 4 years ago

When compiling AMCL, you need to specify ACML_INCLUDE_SUBDIR=amcl:

cmake .. -DAMCL_INCLUDE_SUBDIR=acml [-D<...>]

This is because AMCL (originally) installed it's headers directly in include, not include/amcl. This is wrong, but when I rewrote the CMake, I couldn't change that behavior as the default without breaking existing non-Xaptum users. So you have to specify that option to get the correct behavior. See the debian/stretch branch here for the CMake options we use when building for Debian.

With /opt/amcl/include in your include_directories(...), then the existing #include "amcl/<header>.h" lines work fine. The headers will be installed under /opt/amcl/include/amcl/<header>.h

drbild commented 4 years ago

My second question, why install ACML in /opt/amcl rather than in the usual /usr or /usr/local? Is that a Raspbian convention?

If you install in /usr, then ecdaa should build fine.

zanebeckwith commented 4 years ago

Agreed with drbild's responses above.

Also, another place for guidance on building required libraries for this project is in the .travis directory, if that helps