[project @ 1998-11-21 14:35:00 by sof]

[ghc-hetmet.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index e8e3695..7a8c368 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,4 +1,4 @@
-dnl $Id: aclocal.m4,v 1.30 1998/10/07 12:41:42 simonm Exp $
+dnl $Id: aclocal.m4,v 1.32 1998/11/21 14:35:00 sof Exp $
 dnl 
 dnl Extra autoconf macros for the Glasgow fptools
 dnl
@@ -50,6 +50,7 @@ if test "$fptools_cv_altzone" = yes; then
 fi
 ])
 
+
 dnl ** check for leading underscores in symbol names
 dnl 
 dnl Test for determining whether symbol names have a leading
@@ -74,7 +75,6 @@ changequote(<<, >>)dnl
 <<
 case $HostPlatform in
 alpha-dec-osf*) fptools_cv_lead_uscore='no';;
-*cygwin32)      fptools_cv_lead_uscore='yes';;
 *) >>
 changequote([, ])dnl
 AC_TRY_RUN([#ifdef HAVE_NLIST_H
@@ -441,7 +441,7 @@ int i;
 int main() { return ((char*)&f > (char*)&i); }
 
 ],
-fptools_cv_code_bef_data=yes, fptools_cv_code_bef_data=no)])
+fptools_cv_code_bef_data=yes, fptools_cv_code_bef_data=no,false)])
 if test "$fptools_cv_code_bef_data" = yes; then
   AC_DEFINE(CODE_BEFORE_DATA)
 fi
@@ -460,6 +460,7 @@ not_done=1
 for i in etext _etext __etext; do
   FPTOOLS_IN_SCOPE($i,$i,fptools_cv_end_of_text)
   if test "$fptools_cv_end_of_text" = yes; then
+   AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER_DECL, $i)
    AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER, $i)
    not_done=0
    break
@@ -468,7 +469,8 @@ done
 if test "$not_done" = 1; then
 FPTOOLS_IN_SCOPE(etext asm("etext"),etext,fptools_cv_end_of_text);
 if test "$fptools_cv_end_of_text" = yes; then
-  AC_DEFINE(TEXT_SECTION_END_MARKER, etext asm("etext"))
+  AC_DEFINE(TEXT_SECTION_END_MARKER_DECL, etext asm("etext"))
+  AC_DEFINE(TEXT_SECTION_END_MARKER, etext)
 else
   AC_DEFINE(TEXT_SECTION_END_MARKER, dunno_what_it_is)
 fi
@@ -484,6 +486,7 @@ not_done=1
 for i in end _end __end; do
   FPTOOLS_IN_SCOPE($i,$i,fptools_cv_end_of_data)
   if test "$fptools_cv_end_of_data" = yes; then
+   AC_DEFINE_UNQUOTED(DATA_SECTION_END_MARKER_DECL, $i)
    AC_DEFINE_UNQUOTED(DATA_SECTION_END_MARKER, $i)
    not_done=0
    break
@@ -492,9 +495,107 @@ done
 if test "$not_done" = 1; then
 FPTOOLS_IN_SCOPE(end asm("end"),end,fptools_cv_end_of_data);
 if test "$fptools_cv_end_of_data" = yes; then
-  AC_DEFINE(DATA_SECTION_END_MARKER, end asm("end"))
+  AC_DEFINE(DATA_SECTION_END_MARKER_DECL, end asm("end"))
+  AC_DEFINE(DATA_SECTION_END_MARKER, end)
 else
+  AC_DEFINE(DATA_SECTION_END_MARKER_DECL, dunno_what_it_is)
   AC_DEFINE(DATA_SECTION_END_MARKER, dunno_what_it_is)
 fi
 fi
 ])])
+
+
+
+dnl Based on AC_TRY_LINK - run iftrue if links cleanly with no warning
+
+dnl FPTOOLS_TRY_LINK_NOWARN(flags,main?,iftrue,iffalse)
+
+AC_DEFUN(FPTOOLS_TRY_LINK_NOWARN,
+[
+ac_save_LIBS="$LIBS"
+LIBS=[$1];
+cat > conftest.$ac_ext <<EOF
+dnl This sometimes fails to find confdefs.h, for some reason.
+dnl [#]line __oline__ "[$]0"
+[#]line __oline__ "configure"
+#include "confdefs.h"
+[$2]
+int t() { return 0; }
+EOF
+if AC_TRY_EVAL(ac_link); then
+  ifelse([$3], , :, [
+    LIBS="$ac_save_LIBS"
+    rm -rf conftest*
+    $3])
+  ifelse([$4], , , [else
+    LIBS="$ac_save_LIBS"
+    rm -rf conftest*
+    $4
+])dnl
+fi
+rm -f conftest*
+]
+)
+
+dnl Loosely based on AC_CHECK_LIB in acgeneral.m4 in autoconf distribution
+
+dnl FPTOOLS_CHECK_FLAG_NOWARN(NAME, FLAG, CODE, iftrue, iffalse)
+
+AC_DEFUN(FPTOOLS_CHECK_FLAG_NOWARN,
+[AC_MSG_CHECKING([for $1])
+ AC_CACHE_VAL(ac_cv_flag_$1,
+   [FPTOOLS_TRY_LINK_NOWARN("$2", [main() { $3; exit(0); } ],
+     eval "ac_cv_flag_$1=yes",
+     eval "ac_cv_flag_$1=no"
+   )]
+ )
+if eval "test \"`echo '$ac_cv_flag_'$1`\" = yes"; then
+  AC_MSG_RESULT(yes)
+  LIBS="$2 $LIBS"
+  $4
+else
+  AC_MSG_RESULT(no)
+  $5
+fi
+])
+
+dnl FPTOOLS_CHECK_LIB_NOWARN(LIBRARY, FUNCTION)
+
+AC_DEFUN(FPTOOLS_CHECK_LIB_NOWARN,
+[FPTOOLS_CHECK_FLAG_NOWARN([function_$2],[],[extern char $2(); $2();],
+[changequote(, )dnl
+  ac_tr_lib=HAVE_LIB`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ changequote([, ])dnl
+ AC_DEFINE_UNQUOTED($ac_tr_lib)
+],
+[FPTOOLS_CHECK_FLAG_NOWARN([library_$1],[-l$1],[extern char $2(); $2();],
+[changequote(, )dnl
+  ac_tr_lib=HAVE_LIB`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ changequote([, ])dnl
+ AC_DEFINE_UNQUOTED($ac_tr_lib)
+],
+[]
+)])]
+)
+
+dnl check for prototypes
+dnl
+AC_DEFUN(AC_C_PROTOTYPES,
+[AC_CACHE_CHECK([prototypes], ac_cv_prototypes,
+[AC_TRY_COMPILE([
+void foo(int);
+void foo(i)
+int i; { 
+return;
+}
+],
+[int i;], 
+ac_cv_prototypes=yes,
+ac_cv_prototypes=no)])
+if test "$ac_cv_prototypes" = yes; then
+AC_DEFINE(HAVE_PROTOTYPES)
+fi
+])
+
+
+# LocalWords:  fi