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Readme: Add cmake build instructions #288

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Readme: Add cmake build instructions #288

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73732e0
cmake: set cmake_minimum_required to 3.22
inkydragon Jan 10, 2024
83afb26
gitignore: ignore cmake build dir
inkydragon Jan 10, 2024
c332edd
Readme: add cmake build instructions
inkydragon Jan 10, 2024
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1 change: 1 addition & 0 deletions .gitignore
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Expand Up @@ -5,3 +5,4 @@
*.so*
*.dylib*
*.pc
build/
2 changes: 1 addition & 1 deletion CMakeLists.txt
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@@ -1,4 +1,4 @@
cmake_minimum_required(VERSION 3.25)
cmake_minimum_required(VERSION 3.22)

project(openlibm
VERSION 0.8.0
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7 changes: 7 additions & 0 deletions README.md
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Expand Up @@ -22,6 +22,7 @@ also supports arm, aarch64, ppc64le, mips, wasm32, riscv, and s390(x).

## Build instructions

### make
1. Use GNU Make to build OpenLibm. This is `make` on most systems, but `gmake` on BSDs.
2. Use `make USEGCC=1` to build with GCC. This is the default on
Linux and Windows.
Expand All @@ -33,6 +34,12 @@ also supports arm, aarch64, ppc64le, mips, wasm32, riscv, and s390(x).
i686. GCC 4.8 is the minimum requirement for correct codegen on
older 32-bit architectures.

### CMake
> NOTE: CMake currently only supports building as a static library.

1. Configure: `cmake -S . -B build/`
2. Build `cmake --build build -j`

## Acknowledgements

PowerPC support for openlibm was graciously sponsored by IBM.
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