I encounter such errors when trying to build libnice-0.1.10. For solution, I am following possibly undefined macro: AC_MSG_ERROR, but still not getting there.
some program version
uname: 3.5.0-23-generic
m4: 1.4.16
automake: 1.14.1
autoconf: 2.69
libtoolize: 2.4.2
I also add ACLOCAL_FLAGS="-I /.../share/aclocal" in bashrc.
Here is what is reported from autogen.
$ ./autogen.sh
configure.ac:331: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/gtk-doc.m4:7: GTK_DOC_CHECK is expanded from...
configure.ac:331: the top level
configure.ac:331: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/gtk-doc.m4:7: GTK_DOC_CHECK is expanded from...
configure.ac:331: the top level
configure.ac:331: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/gtk-doc.m4:7: GTK_DOC_CHECK is expanded from...
configure.ac:331: the top level
libtoolize: putting auxiliary files in `.'.
libtoolize: copying file `./ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIR, `m4'.
libtoolize: copying file `m4/libtool.m4'
libtoolize: copying file `m4/ltoptions.m4'
libtoolize: copying file `m4/ltsugar.m4'
libtoolize: copying file `m4/ltversion.m4'
libtoolize: copying file `m4/lt~obsolete.m4'
configure.ac:331: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/gtk-doc.m4:7: GTK_DOC_CHECK is expanded from...
configure.ac:331: the top level
configure.ac:331: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/gtk-doc.m4:7: GTK_DOC_CHECK is expanded from...
configure.ac:331: the top level
configure.ac:331: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/gtk-doc.m4:7: GTK_DOC_CHECK is expanded from...
configure.ac:331: the top level
configure.ac:105: error: possibly undefined macro: AS_IF
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
configure.ac:218: error: possibly undefined macro: AC_MSG_ERROR
autoreconf: /opt/oblong/deps-64-10/bin/autoconf failed with exit status: 1
Thanks a lot for the help!
This just means you're missing pkg-config (or perhaps you have an old version). Just download and install.
来源：https://stackoverflow.com/questions/28570244/as-if-and-ac-msg-error-error-possibly-undefined-macro