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[platform/upstream/gcc.git] / libobjc / configure.in

diff --git a/libobjc/configure.in b/libobjc/configure.in
index 45e49d2..86a8d92 100644 (file)
--- a/libobjc/configure.in
+++ b/libobjc/configure.in
@@ -1,5 +1,5 @@
 # Process this file with autoconf to produce a configure script.
-#   Copyright (C) 1995, 1997, 1998 Free Software Foundation, Inc.
+#   Copyright (C) 1995, 1997, 1998, 1999 Free Software Foundation, Inc.
 #   Contributed by Dave Love (d.love@dl.ac.uk).
 #
 #This file is part of GNU Objective C.
@@ -19,8 +19,9 @@
 #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #02111-1307, USA.
 
-AC_INIT(objc.h)
-#AC_CONFIG_HEADER(config.h)
+AC_PREREQ(2.13)
+AC_INIT(objc/objc.h)
+AC_CONFIG_HEADER(config.h)
 
 if test "${srcdir}" = "." ; then
   if test "${with_target_subdir}" != "." ; then
@@ -31,8 +32,44 @@ if test "${srcdir}" = "." ; then
 else
   topsrcdir=${srcdir}/..
 fi
+dnl This is needed for a multilibbed build in the source tree so
+dnl that install-sh and config.sub get found.
+AC_CONFIG_AUX_DIR($topsrcdir)
+
+# If the language specific compiler does not exist, but the "gcc" directory 
+# does, we do not build anything. Note, $r is set by the top-level Makefile.
+# Note that when we look for the compiler, we search both with and without
+# extension to handle cross and canadian cross builds. 
+compiler_name=cc1obj
+rm -f skip-this-dir
+AC_MSG_CHECKING(if compiler $compiler_name has been built)
+AC_CACHE_VAL(objc_cv_compiler_exists,
+[objc_cv_compiler_exists=yes
+if test -n "$r"; then
+  if test -d "$r"/gcc; then
+    if test -f "$r"/gcc/$compiler_name \
+       || test -f "$r"/gcc/$compiler_name.exe; then
+      true
+    else
+      objc_cv_compiler_exists=no
+      echo "rm -f config.cache config.log multilib.out" > skip-this-dir
+    fi
+  fi
+fi
+])
+AC_MSG_RESULT($objc_cv_compiler_exists)
+if test x$objc_cv_compiler_exists = xno
+then
+  rm -f Makefile conftest* confdefs* core
+  exit 0
+fi
 
 dnl Checks for programs.
+
+dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may
+dnl not be able to.
+define([AC_PROG_CC_WORKS],[])
+
 # For ObjC we'll set CC to point at the built gcc, but this will get it into
 # the makefiles
 AC_PROG_CC
@@ -46,6 +83,21 @@ else
 fi
 AC_PROG_INSTALL
 
+# We need AC_EXEEXT to keep automake happy in cygnus mode.  However,
+# at least currently, we never actually build a program, so we never
+# need to use $(EXEEXT).  Moreover, the test for EXEEXT normally
+# fails, because we are probably configuring with a cross compiler
+# which cant create executables.  So we include AC_EXEEXT to keep
+# automake happy, but we dont execute it, since we dont care about
+# the result.
+if false; then
+  # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
+  # to nothing, so nothing would remain between `then' and `fi' if it
+  # were not for the `:' below.
+  :
+  AC_EXEEXT
+fi
+
 dnl Checks for libraries.
 
 dnl Checks for header files.
@@ -59,17 +111,26 @@ the Objective C runtime system.  If necessary, install gcc now with
 
 AC_HEADER_STDC
 
-# Determine the name of the GCC thread file.
+AC_CHECK_HEADERS(sched.h)
 
-AC_CACHE_CHECK([for thread file],objc_cv_thread_file,
-[if test -f ../../gcc/Makefile
+# Determine CFLAGS for gthread.
+
+AC_CACHE_CHECK([for gthread cflags],objc_cv_gthread_flags,
+[if test -f "$r"/gcc/Makefile
 then
-  objc_cv_thread_file=`grep ^GCC_THREAD_FILE ../../gcc/Makefile | awk -F= '{ print $2 }'`
+  objc_cv_gthread_flags=`grep \^GTHREAD_FLAGS "$r"/gcc/Makefile | awk -F= '{ print $2 }'`
 else
   AC_MSG_ERROR([not found])
 fi])
-OBJC_THREAD_FILE=$objc_cv_thread_file
-AC_SUBST(OBJC_THREAD_FILE)
+GTHREAD_FLAGS=$objc_cv_gthread_flags
+AC_SUBST(GTHREAD_FLAGS)
+
+# Disable shared libs by default
+AC_DISABLE_SHARED
+# Enable Win32 DLL on MS Windows - FIXME 
+AC_LIBTOOL_WIN32_DLL 
+# Use libtool
+AC_PROG_LIBTOOL
 
 AC_ARG_ENABLE(objc-gc,
 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
@@ -77,7 +138,7 @@ AC_ARG_ENABLE(objc-gc,
 if [[[ x$enable_objc_gc = xno ]]]; then
         OBJC_BOEHM_GC=''
 else
-        OBJC_BOEHM_GC=libobjc_gc.a
+        OBJC_BOEHM_GC=libobjc_gc.la
 fi,
 OBJC_BOEHM_GC='')
 AC_SUBST(OBJC_BOEHM_GC)