MidgardOS Developer Documentation

A website documenting creating the build root for MidgardOS

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Section 5 - Building the Base System Tools

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Ninja

Name: Ninja
Summary: A small build system focused on speed
License: Apache v2
Version: 1.13.1
URL: https://github.com/ninja-build/ninja/archive/refs/tags/v1.13.1.tar.gz

Average Build Time: 0.2 SBU
Used Install Space: 9.1 MiB

Preparation

To prepare Ninja for install into the build root, run the following commands:

export NINJAJOBS=4
sed -i '/int Guess/a \
  int   j = 0;\
  char* jobs = getenv( "NINJAJOBS" );\
  if ( jobs != NULL ) j = atoi( jobs );\
  if ( j > 0 ) return j;\
' src/ninja.cc

The steps above ensure that the tool will honor the NINJAJOBS environment variable for the number of CPU cores to allocate jobs to. Without this, it will force all cores, plus two additional to be spawned.

Compilation and Installation

To compile Ninja, run the following command:

python3 configure.py --bootstrap --verbose

The test suite requires cmake, which is not available at this point.

Finally, to install Ninja into the build tree, run the following command:

install -vm755 ninja /usr/bin/
install -vDm644 misc/bash-completion /usr/share/bash-completion/completions/ninja
install -vDm644 misc/zsh-completion  /usr/share/zsh/site-functions/_ninja

Contents

Contents
Installed Programs	ninja

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