+2014-06-07 Paul Eggert <eggert@cs.ucla.edu>
+
+ Port better to AIX (Bug#17598).
+ * configure.ac (with_xpm_set): New shell var.
+ (_THREAD_SAFE): Define on AIX if HAVE_PTHREAD.
+ (with_xpm): Default to 'no' on AIX.
+ (LIBXPM): Append -lXpm if -lXaw is also used, as the latter
+ requires the former on AIX.
+
2014-05-30 Paul Eggert <eggert@cs.ucla.edu>
Fix port to 32-bit AIX with xlc (Bug#17598).
dnl _ON results in a '--without' option in the --help output, so
dnl the help text should refer to "don't compile", etc.
+with_xpm_set=${with_xpm+set}
OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
LIBS="$LIB_PTHREAD $LIBS" ;;
esac
AC_DEFINE(HAVE_PTHREAD, 1, [Define to 1 if you have pthread (-lpthread).])
+
+ # Some systems optimize for single-threaded programs by default, and
+ # need special flags to disable these optimizations. For example, the
+ # definition of 'errno' in <errno.h>.
+ if test "$opsys" = aix4-2; then
+ AC_DEFINE([_THREAD_SAFE], [1],
+ [Define to 1 if your system requires this in multithreaded code.])
+ fi
fi
AC_SUBST([LIB_PTHREAD])
fi
if test "${HAVE_X11}" = "yes"; then
+ dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
+ test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
+
if test "${with_xpm}" != "no"; then
AC_CHECK_HEADER(X11/xpm.h,
[AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
if test "${HAVE_XPM}" = "yes"; then
AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
LIBXPM=-lXpm
+ elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
+ dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
+ LIBXPM=-lXpm
fi
fi