Subject: gnuplot: build documentation generator tools with CC_FOR_BUILD
From: Robert Schwebel <r.schwebel@pengutronix.de>

When cross compiling gnuplot, it tries to build the documentation
generation tools in docs/ with the cross compiler, not with
CC_FOR_BUILD.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>

---
# 20091222 rsc: https://sourceforge.net/tracker/?func=detail&aid=2918992&group_id=2055&atid=302055

 configure.in     |   40 ++++++++++++++++++++++++++++++++++++++++
 docs/Makefile.in |    2 +-
 2 files changed, 41 insertions(+), 1 deletion(-)

Index: gnuplot-4.2.4/docs/Makefile.in
===================================================================
--- gnuplot-4.2.4.orig/docs/Makefile.in	2009-01-06 18:46:41.000000000 +0100
+++ gnuplot-4.2.4/docs/Makefile.in	2009-01-06 18:46:46.000000000 +0100
@@ -70,7 +70,7 @@
 
 INFO_DEPS = $(srcdir)/gnuplot.info
 
-CC     = @CC@
+CC     = @CC_FOR_BUILD@
 CPP    = @CPP@
 DEFS   = @DEFS@
 DEFAULT_INCLUDES = -I. -I$(srcdir) -I.. -I$(top_builddir)
Index: gnuplot-4.2.4/configure.in
===================================================================
--- gnuplot-4.2.4.orig/configure.in	2009-01-06 18:46:41.000000000 +0100
+++ gnuplot-4.2.4/configure.in	2009-01-06 18:46:56.000000000 +0100
@@ -12,6 +12,8 @@
 AM_CONFIG_HEADER(config.h:config.hin)
 AM_INIT_AUTOMAKE(1.7.9)
 
+AM_MAINTAINER_MODE
+
 VERSION_MAJOR="`cat $srcdir/VERSION`"
 PATCHLEVEL="`cat $srcdir/PATCHLEVEL`"
 
@@ -27,6 +29,46 @@
 AC_C_INLINE
 AC_C_STRINGIZE
 
+
+if test "${build}" != "${host}"
+then
+  CC=${CC-${host_alias}-gcc}
+  CFLAGS=${CFLAGS-"-g -O2"}
+  CXX=${CXX-${host_alias}-c++}
+  CXXFLAGS=${CXXFLAGS-"-g -O2"}
+  CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
+else
+  CC_FOR_BUILD="\$(CC)"
+  AC_PROG_CC
+
+  # We must set the default linker to the linker used by gcc for the correct
+  # operation of libtool.  If LD is not defined and we are using gcc, try to
+  # set the LD default to the ld used by gcc.
+  if test -z "$LD"
+  then
+    if test "$GCC" = yes
+    then
+      case $build in
+      *-*-mingw*)
+        gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
+      *)
+        gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
+      esac
+      case $gcc_prog_ld in
+      # Accept absolute paths.
+      [[\\/]* | [A-Za-z]:[\\/]*)]
+        LD="$gcc_prog_ld" ;;
+      esac
+    fi
+  fi
+
+  CXX=${CXX-"c++"}
+  CFLAGS=${CFLAGS-"-g -O2"}
+  CXXFLAGS=${CXXFLAGS-"-g -O2"}
+fi
+AC_SUBST(CC_FOR_BUILD)
+
+
 dnl Various programs
 dnl X/Emacs for building lisp packages and creating .texi version of docs
 # If set to t, that means we are running in a shell under Emacs.