Build of pngcrush with musl toolchain

The build took 00h 01m 04s and was NOT successful.

The program in this build is written in the following languages, according to sloccount:

SLOCLanguage
6,660 ansic
28 makefile
6,688 total

The process tree of the build process is here.

Several sub-process invocations were improper; see the process tree for details. Summary:

List of Errors

Log

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Removed vanilla repositories from pacman.conf and added:
# [tuscan]
# Server = file:///var/cache/pacman/pkg/

CMD: pacman -Syy --noconfirm
# :: Synchronizing package databases...
# downloading tuscan.db...

There were existing files in /sysroot, using those
# /sysroot/lib
# /sysroot/share
# /sysroot/bin
# /sysroot/include
# /sysroot/libexec

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: pngcrush 1.8.1-1 (Wed Apr 5 01:27:14 UTC 2017)
# ==> Checking runtime dependencies...
# ==> Checking buildtime dependencies...
# ==> WARNING: Using existing $srcdir/ tree
# ==> Starting build()...
# gcc -c -I/home/tuscan/include -I. -g -O3 -fomit-frame-pointer -Wall pngcrush.c
# pngcrush.c:1304:10: fatal error: 'png.h' file not found
 # #include "png.h"
# ^
# 1 error generated.
# make: *** [Makefile:66: pngcrush.o] Error 1
# ==> ERROR: A failure occurred in build().
# Aborting...