dpkg-buildpackage -rfakeroot -us -uc -ui dpkg-buildpackage: warning: using a gain-root-command while being root dpkg-buildpackage: info: source package pngquant dpkg-buildpackage: info: source version 2.11.7-1 dpkg-buildpackage: info: source distribution unstable dpkg-buildpackage: info: source changed by Gürkan Myczko dpkg-source --before-build pngquant-2.11.7 dpkg-buildpackage: info: host architecture i386 fakeroot debian/rules clean dh clean dh_auto_clean dh_clean dpkg-source -b pngquant-2.11.7 dpkg-source: info: using source format '3.0 (quilt)' dpkg-source: info: building pngquant using existing ./pngquant_2.11.7.orig.tar.gz dpkg-source: info: building pngquant in pngquant_2.11.7-1.debian.tar.xz dpkg-source: info: building pngquant in pngquant_2.11.7-1.dsc debian/rules build dh build dh_update_autotools_config debian/rules override_dh_auto_configure make[1]: Entering directory '/var/www/debian/pngquant/pngquant-2.11.7' ./configure --prefix=/usr --extra-cflags="-g -O2 -fdebug-prefix-map=/var/www/debian/pngquant/pngquant-2.11.7=. -fstack-protector-strong -Wformat -Werror=format-security" --extra-ldflags="-Wl,-z,relro" --enable-sse Compiler: gcc Debug: no SSE: yes OpenMP: no If you're using git, do clone with --recursive, or download from https://github.com/ImageOptim/libimagequant imagequant: error ... libimagequant.h not found in ./lib/ debian/rules:9: recipe for target 'override_dh_auto_configure' failed make[1]: *** [override_dh_auto_configure] Error 1 make[1]: Leaving directory '/var/www/debian/pngquant/pngquant-2.11.7' debian/rules:6: recipe for target 'build' failed make: *** [build] Error 2 dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2