From: simonmar <unknown>
Date: Wed, 24 Oct 2001 09:43:48 +0000 (+0000)
Subject: [project @ 2001-10-24 09:43:47 by simonmar]
X-Git-Tag: Approximately_9120_patches~724
X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=commitdiff_plain;h=4d6959b1a60cc8b03c76346c9a7bddfd77f4f80a

[project @ 2001-10-24 09:43:47 by simonmar]
Detect whether the local 'ld' command supports -x, and only use the
flag if it does.
---

diff --git a/aclocal.m4 b/aclocal.m4
index f8435bf..eb7b0ca 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,4 +1,4 @@
-dnl $Id: aclocal.m4,v 1.85 2001/10/13 20:26:13 sof Exp $
+dnl $Id: aclocal.m4,v 1.86 2001/10/24 09:43:47 simonmar Exp $
 dnl 
 dnl Extra autoconf macros for the Glasgow fptools
 dnl
@@ -245,6 +245,29 @@ AC_SUBST(ContextDiffCmd)
 ])
 
 dnl
+dnl Check whether ld supports -x
+dnl
+AC_DEFUN(FPTOOLS_LD_X,
+[AC_CACHE_CHECK([whether ld understands -x], fptools_cv_ld_x,
+[
+echo 'foo() {}' > conftest.c
+${CC-cc} -c conftest.c
+if ${LdCmd} -r -x -o foo.o conftest.o; then
+   fptools_cv_ld_x=yes
+else
+   fptools_cv_ld_x=no
+fi
+rm -rf conftest.c conftest.o foo.o
+])
+if test "$fptools_cv_ld_x" = yes; then
+	LdXFlag=-x
+else
+	LdXFlag=
+fi
+AC_SUBST(LdXFlag)
+])
+
+dnl
 dnl Finding the Right Yacc
 dnl
 AC_DEFUN(FPTOOLS_PROG_YACCY,
diff --git a/configure.in b/configure.in
index ed227ce..b7e9464 100644
--- a/configure.in
+++ b/configure.in
@@ -973,5 +973,8 @@ FPTOOLS_END_DATA_SECTION
 dnl ** code before data?
 FPTOOLS_CODE_BEFORE_DATA
 
+dnl ** check for ld, and whether ld has -x option
+AC_PATH_PROG(LdCmd, ld)
+FPTOOLS_LD_X
 
 AC_OUTPUT(mk/config.mk, echo timestamp > mk/stamp-h )
diff --git a/mk/config.mk.in b/mk/config.mk.in
index 1268da3..2f52bad 100644
--- a/mk/config.mk.in
+++ b/mk/config.mk.in
@@ -700,7 +700,6 @@ INSTALL			:= $(subst .././install-sh,$(FPTOOLS_TOP_ABS)/install-sh,$(INSTALL))
 LATEX			= latex
 HEVEA			= hevea
 HACHA			= hacha
-LD			= ld
 LN_S			= @LN_S@
 MANMACROS		= -man
 MSMACROS 		= -ms
@@ -714,6 +713,13 @@ RANLIB			= @RANLIB@
 RM			= rm -f
 SED			= @SedCmd@
 SHELL			= /bin/sh
+
+# Some ld's support the -x flag and some don't, so the configure
+# script detects which we have and sets LdXFlag to "-x" or ""
+# respectively.
+LD			= @LdCmd@
+LD_X			= @LdXFlag@
+
 #
 # In emergency situations, REAL_SHELL is used to perform shell commands
 # from within the ghc driver script, by scribbling the command line to
diff --git a/mk/target.mk b/mk/target.mk
index b7ec45b..17de1d3 100644
--- a/mk/target.mk
+++ b/mk/target.mk
@@ -461,7 +461,7 @@ HC_SPLIT_PRE = \
     $(RM) $@; if [ ! -d $(basename $@) ]; then mkdir $(basename $@); else \
     $(FIND) $(basename $@) -name '*.$(way_)o' | xargs $(RM) __rm_food; fi
 ifeq "$(GhcWithInterpreter)" "YES"
-HC_SPLIT_POST = $(LD) -r -x -o $@ $(basename $@)/*.$(way_)o
+HC_SPLIT_POST = $(LD) -r $(LD_X) -o $@ $(basename $@)/*.$(way_)o
 else
 HC_SPLIT_POST = touch $@
 endif # GhcWithInterpreter == YES
@@ -491,12 +491,12 @@ ifeq "$(StripLibraries)" "YES"
 ifeq "$(SplitObjs)" "YES"
 SRC_HC_POST_OPTS += \
   for i in $(basename $@)/*; do \
-	$(LD) -r -x -o $$i.tmp $$i; \
+	$(LD) -r $(LD_X) -o $$i.tmp $$i; \
 	$(MV) $$i.tmp $$i; \
   done
 else
 SRC_HC_POST_OPTS += \
-  $(LD) -r -x -o $@.tmp $@; $(MV) $@.tmp $@
+  $(LD) -r $(LD_X) -o $@.tmp $@; $(MV) $@.tmp $@
 endif # SplitObjs
 endif # StripLibraries
 
@@ -538,7 +538,7 @@ ifneq "$(DONT_WANT_STD_GHCI_LIB_RULE)" "YES"
 # hslibs/Win32 uses this 'feature'.
 #
 $(GHCI_LIBRARY) :: $(LIBOBJS)
-	$(LD) -r -x -o $@ $(LIBOBJS) $(STUBOBJS)
+	$(LD) -r $(LD_X) -o $@ $(LIBOBJS) $(STUBOBJS)
 
 endif # DONT_WANT_STD_GHCI_LIB_RULE
 endif # GhcWithInterpreter