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Diffstat (limited to 'sys-devel/llvm/metadata.xml')
| -rw-r--r-- | sys-devel/llvm/metadata.xml | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sys-devel/llvm/metadata.xml b/sys-devel/llvm/metadata.xml new file mode 100644 index 0000000..3f50323 --- /dev/null +++ b/sys-devel/llvm/metadata.xml @@ -0,0 +1,19 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd"> +<pkgmetadata> + <herd>no-herd</herd> + <maintainer> + <email>voyageur@gentoo.org</email> + <name>Bernard Cafarelli</name> + </maintainer> + <longdescription>Low Level Virtual Machine (LLVM) is: + 1. A compilation strategy designed to enable effective program optimization across the entire lifetime of a program. LLVM supports effective optimization at compile time, link-time (particularly interprocedural), run-time and offline (i.e., after software is installed), while remaining transparent to developers and maintaining compatibility with existing build scripts. + 2. A virtual instruction set - LLVM is a low-level object code representation that uses simple RISC-like instructions, but provides rich, language-independent, type information and dataflow (SSA) information about operands. This combination enables sophisticated transformations on object code, while remaining light-weight enough to be attached to the executable. This combination is key to allowing link-time, run-time, and offline transformations. + 3. A compiler infrastructure - LLVM is also a collection of source code that implements the language and compilation strategy. The primary components of the LLVM infrastructure are a GCC-based C and C++ front-end, a link-time optimization framework with a growing set of global and interprocedural analyses and transformations, static back-ends for many popular (and some obscure) architectures, a back-end which emits portable C code, and a Just-In-Time compilers for several architectures. + 4. LLVM does not imply things that you would expect from a high-level virtual machine. It does not require garbage collection or run-time code generation (In fact, LLVM makes a great static compiler!). Note that optional LLVM components can be used to build high-level virtual machines and other systems that need these services.</longdescription> + <use> + <flag name='alltargets'>Build all host targets (default: host only)</flag> + <flag name='libffi'>Add support to call arbitrary external (natively compiled) functions via <pkg>dev-libs/libffi</pkg></flag> + <flag name='llvm-gcc'>Build LLVM with <pkg>sys-devel/llvm-gcc</pkg></flag> + </use> +</pkgmetadata> |