Redistributable builds
Introduction
If a binary runs on a different machine depends on a lot of factors. The following sections provide some tips to maximize portability. In general Windows binaries are more portable than *nix binaries.
CPU Architecture Optimization
Default compiler flags
/favor:blend: Optimizes for AMD and Intel architectures, see MSDN docs/arch:sse2on 32-bit,/archundefined on 64-bit
Optimization CMake options
OGS_CPU_ARCHITECTURE: possible valuesAMD64orINTEL64(sets/favor:{AMD64 | INTEL64}flag)OGS_ENABLE_AVX2: boolean (sets/arch:AVX2when set to true), requires at least Intel Haswell or AMD Excavator-based processors
Default compiler flags
-march=native: Optimizes for current cpu
CMake options
For redistribution
OGS_CPU_ARCHITECTURE: set togenericfor good balance between optimization and portability; set tocore2for maximum portability, more info on gcc docs
For optimization
OGS_CPU_ARCHITECTURE: tot tonativefor best optimization for your current cpu, possible values are listed here, more info on gcc docsOGS_ENABLE_AVX2: boolean (sets-march=core-avx2when set to true), requires at least Haswell processors
See Linux-tab!
Shared vs. static libraries
Try to use static libraries as much as possible. For OGS itself use BUILD_SHARED_LIBS=OFF, which already defaults to OFF.
Third-party libraries installed via the systems package package manager are often provided as shared libraries. You may want to use Conan which provides lots of libraries (e.g. VTK) as static libs.
Package the build
Use the package-target which tries to gather all dependencies and fixes up shared library paths:
This creates a zip- or tar-archive which should be redistributable.
This article was written by Lars Bilke. If you are missing something or you find an error please let us know.
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