Building from source
Either download the source from the [releases] (https://github.com/seqan/lambda/releases) page as lambda-vX.Y.Z.tar.gz or check out the master branch with git:
% git clone https://github.com/seqan/lambda.git
The latest master branch is not always guaranteed to build, although I do my best to prevent breakage. Current status of the master branch:
- platforms: Linux, FreeBSD, MacOS X or OpenBSD (only 64bit tested for each)
-
compilers:
gcc ≥ 4.9.1,clang ≥ 3.8.0oricc ≥ 16.0.2(GCC is recommended) - cmake ≥ 3.0.0
Other platforms are currently not a priority, but I do accept patches if they don't break anything else.
% tar xzf lambda-vX.Y.Z.tar.gz
% mkdir -p lambda-build/release
% cd lambda-build/release
% cmake ../../lambda-vX.Y.Z
% make -j2
Please be aware that due to excessive use of templating and compile-time optimizations the build might take well over 10min. If your most recent version of GCC is not the default, you have to give it the path with -DCMAKE_CXX_COMPILER=/path/to/g++.
For unknown reasons mac builds are even slower at the moment and can take more than 30min.
| NAME | description | default | since |
|---|---|---|---|
| LAMBDA_FASTBUILD | Setting this is useful for debugging, because the build will be faster. Only BLASTP and BLASTX support will be built. | off | 0.9.0 |
| LAMBDA_NATIVE_BUILD | Deactivating this will disable CPU-specific optimization, but in return your binary will work on different hardware than the one you are building from. | on | 0.9.0 |
| LAMBDA_STATIC_BUILD | Activate to include all libs in the binary. This will result in a bigger binary but in return work on different software than the one you are building from (e.g. compiler and OS version). | off | 0.9.0 |
| LAMBDA_MMAPPED_DB | Use memory-mapped IO to access the database. | on | 0.9.1 |
| LAMBDA_LINGAPS_OPT | This activates optimized codepaths for linear gaps costs (i.e. additional gap open cost == 0). It has no drawbacks other than increased compile time and binary size. | off | 1.0.0 |
To build portable binaries of Lambda, deactivate native builds and activate static builds, i.e. pass -DLAMBDA_NATIVE_BUILD=0 -DLAMBDA_STATIC_BUILD=1 to cmake.
Please note that it is not possible to build completely static binaries on Mac OS X, but the the flag at least packages the compiler specific bits into the binary.