AC_PROG_GREP
AC_PROG_AWK
-AC_PROG_CC
AC_PROG_CC_C99
-AM_PROG_CC_C_O
-AC_PROG_GCC_TRADITIONAL
AC_PATH_PROG([M4], [m4])
AC_PATH_PROG([XSLTPROC], [xsltproc])
-Wold-style-definition \
-Wpointer-arith \
-Winit-self \
+ -Wdeclaration-after-statement \
-Wfloat-equal \
-Wmissing-prototypes \
-Wstrict-prototypes \