The build took 00h 01m 08s and was NOT successful.
The program in this build is written in the following languages, according to sloccount:
| SLOC | Language | 
|---|---|
| 4,201 | ansic | 
| 80 | makefile | 
| 4,281 | total | 
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Removed vanilla repositories from pacman.conf and added:
        There were existing files in /sysroot, using those
        CMD: sudo -u tuscan PATH=/sysroot/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin CC=clang CXX=clang++ red makepkg --noextract --syncdeps --skipinteg --skippgpcheck --skipchecksums --noconfirm --nocolor --log --noprogressbar --nocheck
        ==> Making package: ratpoints 2.1.3-1 (Wed Apr  5 00:58:35 UTC 2017)==> Checking runtime dependencies...==> Checking buildtime dependencies...==> WARNING: Using existing $srcdir/ tree==> Starting build()...gcc sift.c -c -o sift.o -Wall -O2 -fomit-frame-pointer -DRATPOINTS_MAX_BITS_IN_PRIME=7 -DUSE_SSE -funroll-loops gcc gen_init_sieve_h.c -o gen_init_sieve_h  -Wall -O2 -fomit-frame-pointer -DRATPOINTS_MAX_BITS_IN_PRIME=7 -DUSE_SSE -lgmp -lgcc -lc -lm gcc sturm.c -c -o sturm.o -Wall -O2 -fomit-frame-pointer -DRATPOINTS_MAX_BITS_IN_PRIME=7 -DUSE_SSE gcc gen_find_points_h.c -o gen_find_points_h  -Wall -O2 -fomit-frame-pointer -DRATPOINTS_MAX_BITS_IN_PRIME=7 -DUSE_SSE -lgmp -lgcc -lc -lm In file included from sturm.c:29:./ratpoints.h:29:10: fatal error: 'gmp.h' file not found#include          ^1 error generated.make: *** [Makefile:118: sturm.o] Error 1make: *** Waiting for unfinished jobs....In file included from gen_find_points_h.c:29:In file included from ./rp-private.h:52:./ratpoints.h:29:10: fatal error: 'gmp.h' file not found#include          ^In file included from sift.c:29:In file included from ./rp-private.h:52:./ratpoints.h:29:10: fatal error: 'gmp.h' file not found#include          ^In file included from gen_init_sieve_h.c:29:In file included from ./rp-private.h:52:./ratpoints.h:29:10: fatal error: 'gmp.h' file not found#include          ^1 error generated.1 error generated.1 error generated.make: *** [Makefile:133: gen_find_points_h] Error 1make: *** [Makefile:130: gen_init_sieve_h] Error 1make: *** [Makefile:100: sift.o] Error 1==> ERROR: A failure occurred in build().    Aborting...