-#### Extract some information from the operating system and machine files.
-
-AC_CHECKING([the machine- and system-dependent files to find out
- - which libraries the lib-src programs will want, and
- - whether the GNU malloc routines are usable])
-
-### First figure out CFLAGS (which we use for running the compiler here)
-### and REAL_CFLAGS (which we use for real compilation).
-### The two are the same except on a few systems, where they are made
-### different to work around various lossages. For example,
-### GCC 2.5 on GNU/Linux needs them to be different because it treats -g
-### as implying static linking.
-
-### If the CFLAGS env var is specified, we use that value
-### instead of the default.
-
-### It's not important that this name contain the PID; you can't run
-### two configures in the same directory and have anything work
-### anyway.
-tempcname="conftest.c"
-
-echo '
-#include "'${srcdir}'/src/'${opsysfile}'"
-#include "'${srcdir}'/src/'${machfile}'"
-
-configure___ LIBX=-lX11
-
-configure___ unexec=UNEXEC
-
-#ifdef SYSTEM_MALLOC
-configure___ system_malloc=yes
-#else
-configure___ system_malloc=no
-#endif
-
-#ifdef USE_MMAP_FOR_BUFFERS
-configure___ use_mmap_for_buffers=yes
-#else
-configure___ use_mmap_for_buffers=no
-#endif
-
-#ifndef C_OPTIMIZE_SWITCH
-#ifdef __GNUC__
-#define C_OPTIMIZE_SWITCH -O2
-#else
-#define C_OPTIMIZE_SWITCH -O
-#endif
-#endif
-
-#ifndef C_WARNINGS_SWITCH
-#define C_WARNINGS_SWITCH ${C_WARNINGS_SWITCH}
-#endif
-
-#ifdef THIS_IS_CONFIGURE
-
-/* Get the CFLAGS for tests in configure. */
-#ifdef __GNUC__
-configure___ CFLAGS=-g C_OPTIMIZE_SWITCH '${SPECIFIED_CFLAGS}'
-#else
-configure___ CFLAGS='${SPECIFIED_CFLAGS}'
-#endif
-
-#else /* not THIS_IS_CONFIGURE */
-
-/* Get the CFLAGS for real compilation. */
-#ifdef __GNUC__
-configure___ REAL_CFLAGS=-g C_OPTIMIZE_SWITCH C_WARNINGS_SWITCH ${PROFILING_CFLAGS} '${SPECIFIED_CFLAGS}'
-#else
-configure___ REAL_CFLAGS='${SPECIFIED_CFLAGS}'
-#endif
-
-#endif /* not THIS_IS_CONFIGURE */
-' > ${tempcname}
-
-LDFLAGS="${LDFLAGS} ${PROFILING_LDFLAGS}"