X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=aclocal.m4;h=1a45e4f30f1927a159dbd2b244c962fadd842f19;hb=43d5a248f604acf6ad4d743ed7c002580c44aa8f;hp=34542f25539ab8313129f6f835a581d7892ea231;hpb=f13895fc3b7a38c909ee0d2d7c1de24381858024;p=ghc-hetmet.git

diff --git a/aclocal.m4 b/aclocal.m4
index 34542f2..1a45e4f 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -248,9 +248,15 @@ AC_DEFUN(FPTOOLS_HAPPY,
 [
 if test -d $srcdir/happy; then
    SrcTreeHappyCmd=$hardtop/happy/src/happy-inplace
+else
+   SrcTreeHappyCmd=""
 fi
 if test x"$UseSrcTreeHappy" = xYES; then
-  HappyCmd=$SrcTreeHappyCmd
+  if test x"$SrcTreeHappyCmd" != x; then
+     HappyCmd=$SrcTreeHappyCmd
+  else
+     AC_MSG_ERROR([--enable-src-tree-happy given, but happy not found in source tree])
+  fi
 else
   AC_PATH_PROG(HappyCmd,happy,$SrcTreeHappyCmd)
 fi
@@ -282,9 +288,15 @@ AC_DEFUN(FPTOOLS_HADDOCK,
 [
 if test -d $srcdir/haddock; then
    SrcTreeHaddockCmd=$hardtop/haddock/src/haddock-inplace
+else
+   SrcTreeHaddockCmd=""
 fi
 if test x"$UseSrcTreeHaddock" = xYES; then
-  HaddockCmd=$SrcTreeHaddockCmd
+  if test x"$SrcTreeHaddockCmd" != x; then
+     HaddockCmd=$SrcTreeHaddockCmd
+  else
+     AC_MSG_ERROR([--enable-src-tree-haddock given, but haddock not found in source tree])
+  fi
 else
   AC_PATH_PROG(HaddockCmd,haddock,$SrcTreeHaddockCmd)
 fi
@@ -303,9 +315,15 @@ AC_DEFUN(FPTOOLS_ALEX,
 [
 if test -d $srcdir/alex; then
    SrcTreeAlexCmd=$hardtop/alex/src/alex-inplace
+else
+   SrcTreeAlexCmd=""
 fi
 if test x"$UseSrcTreeAlex" = xYES; then
-  AlexCmd=$SrcTreeAlexCmd
+  if test x"$SrcTreeAlexCmd" != x; then
+     AlexCmd=$SrcTreeAlexCmd
+  else
+     AC_MSG_ERROR([--enable-src-tree-alex given, but alex not found in source tree])
+  fi
 else
   AC_PATH_PROG(AlexCmd,alex,$SrcTreeAlexCmd)
 fi
@@ -330,48 +348,65 @@ AC_SUBST(AlexVersion)
 ])
 
 
-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
+# FP_PROG_LD
+# ----------
+# Sets the output variable LdCmd to the (non-Cygwin version of the) full path
+# of ld. Exits if no ld can be found
+AC_DEFUN([FP_PROG_LD],
+[AC_PATH_PROG([fp_prog_ld_raw], [ld])
+if test -z "$fp_prog_ld_raw"; then
+  AC_MSG_ERROR([cannot find ld in your PATH, no idea how to link])
+fi
+LdCmd=$fp_prog_ld_raw
+case $HostPlatform in
+  *mingw32) if test x${OSTYPE} != xmsys; then
+ 	      LdCmd="`cygpath -w ${fp_prog_ld_raw} | sed -e 's@\\\\@/@g'`"
+              AC_MSG_NOTICE([normalized ld command to $LdCmd])
+            fi
+            ;;
+esac
+AC_SUBST([LdCmd])
+])# FP_PROG_LD
+
+
+# FP_PROG_LD_X
+# ------------
+# Sets the output variable LdXFlag to -x if ld supports this flag, otherwise the
+# variable's value is empty.
+AC_DEFUN([FP_PROG_LD_X],
+[AC_REQUIRE([FP_PROG_LD])
+AC_CACHE_CHECK([whether ld understands -x], [fp_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
+if ${LdCmd} -r -x -o conftest2.o conftest.o; then
+   fp_cv_ld_x=yes
 else
-   fptools_cv_ld_x=no
+   fp_cv_ld_x=no
 fi
-rm -rf conftest.c conftest.o foo.o
-])
-if test "$fptools_cv_ld_x" = yes; then
-	LdXFlag=-x
+rm -rf conftest*])
+if test "$fp_cv_ld_x" = yes; then
+  LdXFlag=-x
 else
-	LdXFlag=
+  LdXFlag=
 fi
-AC_SUBST(LdXFlag)
-])
+AC_SUBST([LdXFlag])
+])# FP_PROG_LD_X
 
-dnl
-dnl Check for GNU ld
-dnl
-AC_DEFUN(FPTOOLS_GNU_LD,
-[AC_CACHE_CHECK([whether ld is GNU ld], fptools_cv_gnu_ld,
-[
-if ${LdCmd} -v | grep GNU 2>&1 >/dev/null; then
-   fptools_cv_gnu_ld=yes
-else
-   fptools_cv_gnu_ld=no
-fi
-])
-if test "$fptools_cv_gnu_ld" = yes; then
-	LdIsGNULd=YES
+
+# FP_PROG_LD_IS_GNU
+# -----------------
+# Sets the output variable LdIsGNULd to YES or NO, depending on whether it is
+# GNU ld or not.
+AC_DEFUN([FP_PROG_LD_IS_GNU],
+[AC_REQUIRE([FP_PROG_LD])
+AC_CACHE_CHECK([whether ld is GNU ld], [fp_cv_gnu_ld],
+[if ${LdCmd} --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
+  fp_cv_gnu_ld=yes
 else
-	LdIsGNULd=NO
-fi
-AC_SUBST(LdIsGNULd)
-])
+  fp_cv_gnu_ld=no
+fi])
+AC_SUBST([LdIsGNULd], [`echo $fp_cv_gnu_ld | sed 'y/yesno/YESNO/'`])
+])# FP_PROG_LD_IS_GNU
 
 
 # FP_PROG_AR