X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=aclocal.m4;h=c79cef4c414e134ceb112c3030499ad43c7fbc46;hb=c820a01d7d25013deaac45331e234bacf775a0ea;hp=e823a834cd7a47ae0570a166c8bff5992c56c978;hpb=840b444b0f0bf47a59d157ca8b99087b906231e8;p=ghc-hetmet.git

diff --git a/aclocal.m4 b/aclocal.m4
index e823a83..c79cef4 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,4 +1,4 @@
-dnl $Id: aclocal.m4,v 1.27 1998/08/16 16:45:37 sof Exp $
+dnl $Id: aclocal.m4,v 1.42 1999/06/07 10:12:52 simonmar Exp $
 dnl 
 dnl Extra autoconf macros for the Glasgow fptools
 dnl
@@ -7,6 +7,28 @@ dnl prefixed with FPTOOLS_ to ensure we don't clash
 dnl with any pre-supplied autoconf ones.
 
 dnl
+dnl Is timezone around? (in a header file)
+dnl 
+AC_DEFUN(FPTOOLS_HAVE_TIMEZONE,
+[AC_CACHE_CHECK([timezone], fptools_cv_have_timezone,
+[AC_TRY_COMPILE([#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+], [return timezone;], 
+fptools_cv_have_timezone=yes, fptools_cv_have_timezone=no)])
+if test "$fptools_cv_have_timezone" = yes; then
+  AC_DEFINE(HAVE_TIMEZONE)
+fi
+])
+
+dnl
 dnl Has timezone the type time_t or long (HP-UX 10.20 apparently
 dnl has `long'..)
 dnl 
@@ -23,7 +45,7 @@ AC_DEFUN(FPTOOLS_TYPE_TIMEZONE,
 # endif
 #endif
 
-extern time_t timezone;
+extern time_t timezone;	
 ],
 [int i;], fptools_cv_type_timezone=time_t, fptools_cv_type_timezone=long)])
 AC_DEFINE_UNQUOTED(TYPE_TIMEZONE, $fptools_cv_type_timezone)
@@ -50,6 +72,7 @@ if test "$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
@@ -57,6 +80,11 @@ dnl underscore.
 dnl 
 dnl We assume that they _haven't_ if anything goes wrong.
 dnl
+dnl Some nlist implementations seem to try to be compatible by ignoring
+dnl a leading underscore sometimes (eg. FreeBSD).  We therefore have
+dnl to work around this by checking for *no* leading underscore first.
+dnl Sigh.  --SDM
+dnl
 AC_DEFUN(FPTOOLS_UNDERSCORE,
 [AC_CHECK_LIB(elf, nlist, LIBS="-lelf $LIBS")dnl
 AC_CACHE_CHECK([leading underscore in symbol names], fptools_cv_lead_uscore,
@@ -65,17 +93,22 @@ dnl
 dnl Hack!: nlist() under Digital UNIX insist on there being an _,
 dnl but symbol table listings shows none. What is going on here?!?
 dnl
+dnl Another hack: cygwin doesn't come with nlist.h , so we hardwire
+dnl the underscoredness of that "platform"
 changequote(<<, >>)dnl
 <<
 case $HostPlatform in
 alpha-dec-osf*) fptools_cv_lead_uscore='no';;
+*cygwin32) fptools_cv_lead_uscore='yes';;
+*mingw32) fptools_cv_lead_uscore='yes';;
 *) >>
 changequote([, ])dnl
 AC_TRY_RUN([#ifdef HAVE_NLIST_H
 #include <nlist.h>
 changequote(<<, >>)dnl
 <<
-struct nlist xYzzY[] = {{"_xYzzY", 0},{0}};
+struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
+struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
 #endif
 
 main(argc, argv)
@@ -83,7 +116,9 @@ int argc;
 char **argv;
 {
 #ifdef HAVE_NLIST_H
-    if(nlist(argv[0], xYzzY) == 0 && xYzzY[0].n_value != 0)
+    if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
+        exit(1);
+    if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
         exit(0);>>
 changequote([, ])dnl
 #endif
@@ -102,7 +137,7 @@ dnl
 dnl Check for Happy and version.
 dnl
 AC_DEFUN(FPTOOLS_HAPPY,
-[AC_PATH_PROG(HappyCmd,happy)
+[AC_PATH_PROG(HappyCmd,happy,,$PATH ${hardtop}/happy/src)
 AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
 [if test x"$HappyCmd" != x; then
    fptools_cv_happy_version="`$HappyCmd -v |
@@ -278,7 +313,7 @@ AC_DEFUN(FPTOOLS_PROG_GNUCPP,
 [AC_CACHE_CHECK([how to invoke GNU cpp directly], fptools_cv_gnu_cpp,
 [if test "$HaveGcc" = "YES"; then
 	echo > conftest.c
-	gcc -v -E conftest.c >/dev/null 2>conftest.out
+	$CC -v -E conftest.c >/dev/null 2>conftest.out
 	# \x5c = backslash
 	echo 'tr/\x5c/\//; /(\S+\/)cpp/ && print "[$]{1}cpp -iprefix [$]1";' > conftest.pl
 	fptools_cv_gnu_cpp="`eval $PerlCmd -n conftest.pl conftest.out`"
@@ -422,3 +457,172 @@ AC_DEFINE(HAVE_O_BINARY)
 fi
 ])
 
+dnl *** Which one comes first, .text or .data? ***
+dnl 
+AC_DEFUN(FPTOOLS_CODE_BEFORE_DATA,
+[AC_CACHE_CHECK([if code section appears before data], fptools_cv_code_bef_data,
+[AC_TRY_RUN([
+int f() { return 1; }
+int i;
+int main() { return ((char*)&f > (char*)&i); }
+
+],
+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
+])
+
+dnl *** Helper function **
+dnl 
+AC_DEFUN(FPTOOLS_IN_SCOPE,AC_TRY_LINK([extern char* $1;],[return (int)&$2], $3=yes, $3=no))
+
+dnl *** What's the end-of-text-section marker called? ***
+dnl
+AC_DEFUN(FPTOOLS_END_TEXT_SECTION,
+[AC_MSG_CHECKING([for end of text section marker])
+not_done=1
+for i in data_start _data_start etext _etext __etext; do
+  FPTOOLS_IN_SCOPE($i,$i,fptools_end_of_text)
+  if test "$fptools_end_of_text" = yes; then
+   AC_CACHE_VAL([fptools_cv_end_of_text_decl], AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER_DECL, $i))
+   AC_CACHE_VAL([fptools_cv_end_of_text], AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER, $i))
+   not_done=0
+   break
+  fi
+done
+if test "$not_done" = 1; then
+FPTOOLS_IN_SCOPE(etext asm("etext"),etext,fptools_end_of_text);
+if test "$fptools_end_of_text" = yes; then
+  AC_CACHE_VAL([fptools_cv_end_of_text], AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER, etext))
+  AC_CACHE_VAL([fptools_cv_end_of_text_decl], AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER_DECL, etext asm("etext")))
+else
+  AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER_DECL, dunno_what_it_is)
+  AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER, dunno_what_it_is)
+fi
+fi
+AC_MSG_RESULT([$]fptools_cv_end_of_text)
+])
+
+dnl *** What's the end-of-data-section marker called? ***
+dnl
+AC_DEFUN(FPTOOLS_END_DATA_SECTION,
+[AC_MSG_CHECKING([for end of data section marker])
+not_done=1
+for i in end _end __end; do
+  FPTOOLS_IN_SCOPE($i,$i,fptools_end_of_data)
+  if test "$fptools_end_of_data" = yes; then
+   AC_CACHE_VAL([fptools_cv_end_of_data_decl], [AC_DEFINE_UNQUOTED(DATA_SECTION_END_MARKER_DECL, $i)])
+   AC_CACHE_VAL([fptools_cv_end_of_data], [AC_DEFINE_UNQUOTED(DATA_SECTION_END_MARKER, $i)])
+   not_done=0
+   break
+  fi
+done
+if test "$not_done" = 1; then
+FPTOOLS_IN_SCOPE(end asm("end"),end,fptools_end_of_data);
+if test "$fptools_end_of_data" = yes; then
+  AC_CACHE_VAL([fptools_cv_end_of_data_decl], [AC_DEFINE_UNQUOTED(DATA_SECTION_END_MARKER_DECL, end asm("end"))])
+  AC_CACHE_VAL([fptools_cv_end_of_data], [AC_DEFINE_UNQUOTED(DATA_SECTION_END_MARKER, end)])
+else
+  AC_CACHE_VAL([fptools_cv_end_of_data_decl], [AC_DEFINE_UNQUOTED(DATA_SECTION_END_MARKER_DECL, dunno_what_it_is)])
+  AC_CACHE_VAL([fptools_cv_end_of_data], [AC_DEFINE_UNQUOTED(DATA_SECTION_END_MARKER, dunno_what_it_is)])
+fi
+fi
+AC_MSG_RESULT([$]fptools_cv_end_of_data)
+])
+
+
+
+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