Running on Steam deck, I have this when attempting a makepkg -si
checking if this is really Intel C compiler... no
checking if this is really Clang C compiler... no
checking for gcc option to accept ANSI C... none needed
checking $CFLAGS variable... broken
configure: WARNING: your environment uses the CFLAGS variable to hold CPPFLAGS options
checking $CC variable... ok
checking how to run the C preprocessor... /lib/cpp
configure: error: C preprocessor "/lib/cpp" fails sanity check
==> ERROR: A failure occurred in build().
Aborting...
Pinned Comments
Barthalion commented on 2018-01-02 11:53 (UTC)
For the lazy, you can also install ncurses5-compat-libs package from my personal repository.
WoefulDerelict commented on 2016-05-23 19:35 (UTC) (edited on 2018-08-18 20:22 (UTC) by WoefulDerelict)
This PKGBUILD verifies the authenticity of the source via PGP signatures which are not part of the Arch Linux keyring. In order to complete the process it is necessary to import the key(s) from the ‘validpgpkeys’ array into the user’s keyring before calling makepkg. There is a helpful article explaining this process by one of Arch Linux's developers located here: http://allanmcrae.com/2015/01/two-pgp-keyrings-for-package-management-in-arch-linux/
Instructions on importing keys from a keyserver and how to automate the retrieval process can be found in the Arch Linux wiki here: https://wiki.archlinux.org/index.php/GnuPG#Use_a_keyserver This article also contains helpful information describing the installation of GnuPG, its configuration and usage.
Execute the following to import keys using gpg:
gpg --recv-keys <KEYID - See 'validpgpkeys' array in PKGBUILD>The PGP signature check can be skipped by passing --skippgpcheck to makepkg.
Consult the makepkg manual page for a full list of options. [https://www.archlinux.org/pacman/makepkg.8.html]