dnl ### Determine integer type to use for bitmaps AC_DEFUN(XDVI_C_BITMAP_TYPE, [AC_MSG_CHECKING(for integer type to use in bitmaps) AC_CACHE_VAL(xdvi_cv_bitmap_type, [AC_TRY_RUN( [#include main() { FILE *f=fopen("conftestval", "w"); if (!f) exit(1); if ((sizeof(unsigned long) == 4 || sizeof(unsigned long) == 2) && sizeof(unsigned long) != sizeof(unsigned int)) fprintf(f, "BMTYPE=long BMBYTES=%d\n", sizeof(unsigned long)); if (sizeof(unsigned int) == 4 || sizeof(unsigned int) == 2) fprintf(f, "BMTYPE=int BMBYTES=%d\n", sizeof(unsigned int)); else if (sizeof(unsigned short) == 4 || sizeof(unsigned short) == 2) fprintf(f, "BMTYPE=short BMBYTES=%d\n", sizeof(unsigned short)); else fprintf(f, "BMTYPE=char BMBYTES=%d\n", sizeof(unsigned char)); exit(0); }], xdvi_cv_bitmap_type="`cat conftestval`", AC_MSG_ERROR(could not determine integer type for bitmap))]) eval "$xdvi_cv_bitmap_type" AC_DEFINE_UNQUOTED(BMTYPE, $BMTYPE) AC_DEFINE_UNQUOTED(BMBYTES, $BMBYTES) AC_MSG_RESULT([unsigned $BMTYPE, size = $BMBYTES])]) dnl ### Check for at-least-pretend Streams capability AC_DEFUN(XDVI_SYS_STREAMS, [AC_CACHE_CHECK([for stropts.h and isastream()], xdvi_cv_sys_streams, [AC_TRY_LINK( [#include ], [#ifndef I_SETSIG choke me #else isastream(0); #endif], xdvi_cv_sys_streams=yes, xdvi_cv_sys_streams=no)]) if test $xdvi_cv_sys_streams = yes; then AC_DEFINE(HAVE_STREAMS) fi]) dnl ### Check for poll() AC_DEFUN(XDVI_FUNC_POLL, [AC_CACHE_CHECK([for poll.h and poll()], xdvi_cv_func_poll, [AC_TRY_LINK( [#include ], [poll((struct pollfd *) 0, 0, 0);], xdvi_cv_func_poll=yes, xdvi_cv_func_poll=no)]) if test $xdvi_cv_func_poll = yes; then AC_DEFINE(HAVE_POLL) else AC_CHECK_HEADERS(sys/select.h select.h) fi]) dnl ### Check for SunOS 4 AC_DEFUN(XDVI_SYS_SUNOS_4, [AC_CACHE_CHECK([for SunOS 4], xdvi_cv_sys_sunos_4, [case "`(uname -sr) 2>/dev/null`" in "SunOS 4."*) xdvi_cv_sys_sunos_4=yes ;; *) xdvi_cv_sys_sunos_4=no ;; esac]) if test $xdvi_cv_sys_sunos_4 = yes; then AC_DEFINE(SUNOS4) fi])