Experiment with porting SGML to YAP, and trying to preserve SWI code as much

as possible.

packages/sgml/configure.in

@@ -0,0 +1,114 @@
+dnl Process this file with autoconf to produce a configure script.
+
+AC_INIT(install-sh)
+AC_PREREQ([2.50])
+AC_CONFIG_HEADER(config.h)
+
+AC_ARG_WITH(prolog,
+   [ --with-prolog=PLBINARY   use given SWI Prolog binary])
+
+AC_SUBST(PL)
+AC_SUBST(LD)
+AC_SUBST(PLLD)
+AC_SUBST(PLLIBS)
+AC_SUBST(PLBASE)
+AC_SUBST(PLARCH)
+AC_SUBST(PLINCL)
+AC_SUBST(COFLAGS)
+AC_SUBST(CWFLAGS)
+AC_SUBST(CMFLAGS)
+AC_SUBST(ETAGS)
+AC_SUBST(SO)
+AC_SUBST(LDSOFLAGS)
+AC_SUBST(RUNTEX)
+
+AC_ARG_ENABLE(mt, [  --enable-mt		  Enable Multi-threading],
+	      [case "$enableval" in
+		   yes) MT=yes
+		       ;;
+		   *)  ;;
+	       esac])
+
+AC_PROG_CC
+LD=$CC
+
+# Do not cache this, it changes too often in many configurations
+unset ac_cv_prog_PL
+
+if test -z "$PLINCL"; then
+plcandidates="$with_prolog swi-prolog swipl pl"
+AC_CHECK_PROGS(PL, $plcandidates, "none")
+AC_CHECK_PROGS(PLLD, plld, "none")
+if test $PLLD = "none"; then
+   AC_ERROR("Cannot find SWI-Prolog plld utility. SWI-Prolog must be installed first")
+fi
+if test $PL = "none"; then
+   AC_ERROR("Cannot find SWI-Prolog. SWI-Prolog must be installed first")
+else
+   AC_CHECKING("Running $PL -dump-runtime-variables")
+   eval `$PL -dump-runtime-variables`
+fi
+PLINCL="$PLBASE/include"
+AC_MSG_RESULT("		PLBASE=$PLBASE")
+AC_MSG_RESULT("		PLARCH=$PLARCH")
+AC_MSG_RESULT("		PLLIBS=$PLLIBS")
+AC_MSG_RESULT("		PLLDFLAGS=$PLLDFLAGS")
+AC_MSG_RESULT("		PLSHARED=$PLSHARED")
+if test "$PLTHREADS" = yes; then MT=yes; fi
+else
+PLLD=../plld.sh
+PL=../pl.sh
+fi
+
+if test "$MT" = yes; then
+  AC_DEFINE([_REENTRANT], 1,
+ 	    [Define for multi-threaded version])
+fi
+
+CC=$PLLD
+LD=$PLLD
+LDSOFLAGS=-shared
+CMFLAGS=-fpic
+SO="$PLSOEXT"
+
+if test ! -z "$GCC"; then
+    COFLAGS="${COFLAGS--O2 -fno-strict-aliasing}"
+    CWFLAGS="${CWFLAGS--Wall}"
+else
+    COFLAGS="${COFLAGS--O}"
+fi
+
+case "$PLARCH" in
+  *irix*)	if test -z "$GCC"; then
+  		    CWFLAGS="$CWFLAGS -woff 1164"
+		fi
+		;;
+  *darwin*)	CMFLAGS="$CMFLAGS -cc-options,-no-cpp-precomp"
+		;;
+  *)		;;
+esac
+
+AC_CHECK_PROGS(MAKE, gmake make, "make")
+AC_MSG_CHECKING("whether make is GNU-make")
+if ($MAKE -v 2>&1) | grep GNU > /dev/null; then
+    AC_MSG_RESULT(yes)
+    gmake=yes
+else
+    VPATH="VPATH = "
+    gmake=no
+fi
+AC_CHECK_PROGS(ETAGS, etags ctags, ":")
+AC_CHECK_PROGS(RUNTEX, runtex, ":")
+AC_PROG_INSTALL
+AC_PROG_CPP
+AC_ISC_POSIX
+AC_HEADER_STDC
+CFLAGS="$CMFLAGS"
+AC_C_BIGENDIAN
+AC_C_INLINE
+AC_CHECK_SIZEOF(long, 4)
+
+AC_CHECK_HEADERS(malloc.h unistd.h sys/time.h fcntl.h floatingpoint.h)
+AC_CHECK_FUNCS(snprintf strerror strtoll)
+
+AC_OUTPUT(Makefile)