[pacman-dev] [PATCH] Add link time optimization support to makepkg

[Allan McRae]

On 1/3/21 2:19 pm, Allan McRae wrote:
> Add the 'lto' option to enable building with link time optimization
> by adding '-flto' to both CFLAGS and CXXFLAGS.  The 'lto' option can
> be specificed both in the PKGBUILD or by setting the default in
> makepkg.conf.
> 
> Signed-off-by: Allan McRae <allan at archlinux.org>
> ---
> 
> TODO:
>  - strip LTO symbols from distributed .a/.o files.
>    e.g. https://bugzilla.redhat.com/attachment.cgi?id=1650804&action=diff
> 
>  - provide helper script to adjust old autoconf files for LTO support(?)
>    e.g. https://bugzilla.redhat.com/attachment.cgi?id=1650843&action=diff
>    Not sure this should be part of makepkg or distribution tools.
> 
> 
>  doc/PKGBUILD.5.asciidoc               |  4 +++
>  doc/makepkg.conf.5.asciidoc           |  4 +++
>  etc/makepkg.conf.in                   |  5 ++--
>  scripts/libmakepkg/buildenv/lto.sh.in | 37 +++++++++++++++++++++++++++

Self-review:   This file needs added to the relevant meson.build.  This
has been done and is on my patchqueue branch.

Allan

>  4 files changed, 48 insertions(+), 2 deletions(-)
>  create mode 100644 scripts/libmakepkg/buildenv/lto.sh.in