On Wed, Mar 26, 2014 at 09:43:08PM +0000, Maciej W. Rozycki wrote:
> Alan,
>
> On Tue, 17 Dec 2013, Alan Modra wrote:
>
> > On Tue, Dec 17, 2013 at 01:14:23PM +0100, Bernd Edlinger wrote:
> > > the reason for this is overwriting GMPINC for the auto-build generation,
> > > because
> > > many test scripts include <gmp.h> which fails now completely (it is not
> > > installed,
> > > I have it in-tree).
> >
> > Yes, I understand the reason why your setup is failing. Please try
> > this patch.
> >
> > Index: gcc/configure.ac
> > ===================================================================
> > --- gcc/configure.ac (revision 206009)
> > +++ gcc/configure.ac (working copy)
> > @@ -1529,8 +1529,13 @@
> > /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
> > *) realsrcdir=../${srcdir};;
> > esac
> > + # Clearing GMPINC is necessary to prevent host headers being
> > + # used by the build compiler. Defining GENERATOR_FILE stops
> > + # system.h from including gmp.h.
> > CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
> > - LDFLAGS="${LDFLAGS_FOR_BUILD}" GMPINC="" \
> > + CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
> > + LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
> > + GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
> > ${realsrcdir}/configure \
> > --enable-languages=${enable_languages-all} \
> > --target=$target_alias --host=$build_alias --build=$build_alias
>
> Can you please backport this change to 4.8 too, to fix the build
> regression discussed here introduced by the previous change that did get
> backported?
Oops, I'd forgotten that the first patch had gone on the branch..
Backported and regression tested. OK to apply?
2014-03-27 Alan Modra <amo...@gmail.com>
Apply from mainline
2014-01-28 Alan Modra <amo...@gmail.com>
* Makefile.in (BUILD_CPPFLAGS): Do not use ALL_CPPFLAGS.
* configure.ac <recursive call for build != host>: Define
GENERATOR_FILE. Comment. Use CXX_FOR_BUILD, CXXFLAGS_FOR_BUILD
and LD_FOR_BUILD too.
* configure: Regenerate.
Index: gcc/Makefile.in
===================================================================
--- gcc/Makefile.in (revision 208856)
+++ gcc/Makefile.in (working copy)
@@ -747,7 +747,8 @@
# Native linker and preprocessor flags. For x-fragment overrides.
BUILD_LDFLAGS=@BUILD_LDFLAGS@
-BUILD_CPPFLAGS=$(ALL_CPPFLAGS)
+BUILD_CPPFLAGS= -I. -I$(@D) -I$(srcdir) -I$(srcdir)/$(@D) \
+ -I$(srcdir)/../include @INCINTL@ $(CPPINC) $(CPPFLAGS)
# Actual name to use when installing a native compiler.
GCC_INSTALL_NAME := $(shell echo gcc|sed '$(program_transform_name)')
Index: gcc/configure.ac
===================================================================
--- gcc/configure.ac (revision 208856)
+++ gcc/configure.ac (working copy)
@@ -1516,8 +1516,13 @@
/* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
*) realsrcdir=../${srcdir};;
esac
+ # Clearing GMPINC is necessary to prevent host headers being
+ # used by the build compiler. Defining GENERATOR_FILE stops
+ # system.h from including gmp.h.
CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
- LDFLAGS="${LDFLAGS_FOR_BUILD}" GMPINC="" \
+ CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
+ LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
+ GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
${realsrcdir}/configure \
--enable-languages=${enable_languages-all} \
--target=$target_alias --host=$build_alias --build=$build_alias
--
Alan Modra
Australia Development Lab, IBM
