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glaucus

libcap

Prepare

Section titled “Prepare”
  • Depends on linux-headers
  • progs/mkcapshdoc.sh depends on bash

Configure

Section titled “Configure”
  • DEBUG is empty by default
  • Explicitly specify CC, AR, RANLIB and OBJCOPY when CROSS_COMPILE is defined
  • GOPKGDIR isn’t used when GOLANG=no
  • INDENT is empty if not found and is not used when USE_GPERF=no
  • KERNEL_HEADERS control which capability.h, prctl.h and securebits.h to include, the internal ones under libcap/include/uapi/linux vs the ones under usr/include/linux (provided by linux-headers) and these two may not always be in sync which is why the internal headers are “intentionally” kept ahead; do not set KERNEL_HEADERS
  • PTHREADS is set to yes by default and provides libpsx
  • RAISE_SETFCAP is set to no by default (yes is not recommended)
  • USE_GPERF=no prevents the build system from depending on gperf and uses the fallback generator instead
  • CAPSH_SHELL='-DSHELL=\"/bin/sh\"' stops capsh from falling back to /bin/bash

Build

Section titled “Build”
  • Does not support parallel build; complains about missing cap_names.h when it exists (a race condition probably..)

Package

Section titled “Package”
  • Are pam_cap.so, libcap.so and libpsx.so runnable as standalone binaries (chmod +x)?

References

Section titled “References”