Hello! I've spent a lot of hours trying to compile harfbuzz on my CentOS 5.7 system with cPanel. I've installed a lot of packages that were missing, but I keep getting errors and I'm stuck. I don't know what the problem is. Here is what I get when I try autogen.sh: checking for ragel... /usr/bin/ragel checking for pkg-config... /usr/bin/pkg-config checking for autoreconf... /usr/local/bin/autoreconf running autoreconf --force --install --verbose perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = "en_US.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). autoreconf: Entering directory `.' autoreconf: <a href="http://configure.ac">configure.ac</a>: not using Gettext autoreconf: running: aclocal --force perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = "en_US.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = "en_US.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). <a href="http://configure.ac:52">configure.ac:52</a>: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd /usr/local/share/aclocal/gtk-doc.m4:67: GTK_DOC_CHECK is expanded from... <a href="http://configure.ac:52">configure.ac:52</a>: the top level autoreconf: <a href="http://configure.ac">configure.ac</a>: tracing <a href="http://configure.ac:52">configure.ac:52</a>: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd aclocal.m4:89: GTK_DOC_CHECK is expanded from... <a href="http://configure.ac:52">configure.ac:52</a>: the top level autoreconf: <a href="http://configure.ac">configure.ac</a>: not using Libtool autoreconf: running: /usr/local/bin/autoconf --force <a href="http://configure.ac:52">configure.ac:52</a>: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd aclocal.m4:89: GTK_DOC_CHECK is expanded from... <a href="http://configure.ac:52">configure.ac:52</a>: the top level <a href="http://configure.ac:32">configure.ac:32</a>: error: possibly undefined macro: AC_SUBST If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. <a href="http://configure.ac:56">configure.ac:56</a>: error: possibly undefined macro: AC_CHECK_HEADERS <a href="http://configure.ac:117">configure.ac:117</a>: error: possibly undefined macro: AC_MSG_CHECKING <a href="http://configure.ac:120">configure.ac:120</a>: error: possibly undefined macro: AC_TRY_LINK <a href="http://configure.ac:122">configure.ac:122</a>: error: possibly undefined macro: AC_MSG_RESULT autoreconf: /usr/local/bin/autoconf failed with exit status: 1 Could you please help me? thanks, Yannis