./:

	* configure.ac: Add --enable-build-with-cxx.  When set, add c++ to
	boot_languages.  Only bootstrap target libraries listed in
	target_libs for some boot language.  Add --with-stage1-ldflags,
	--with-stage1-libs, --with-boot-ldflags, --with-boot-libs.  Remove
	with_host_libstdcxx from ppllibs.  Only add -fkeep-inline-functions
	if not building with C++.
	* Makefile.def: For target_module libstdc++-v3, set bootstrap=true.
	* Makefile.tpl (STAGE1_LDFLAGS, STAGE1_LIBS): New variables.
	(POSTSTAGE1_LDFLAGS, POSTSTAGE1_LIBS): New variables.
	(HOST_EXPORTS): Add STAGE1_LDFLAGS to LDFLAGS.  Export HOST_LIBS.
	(POSTSTAGE1_HOST_EXPORTS): Set CXX and CXX_FOR_BUILD.  Add
	POSTSTAGE1_LDFLAGS to LDFLAGS.  Export HOST_LIBS.
	(POSTSTAGE1_FLAGS_TO_PASS): Likewise.
	* configure, Makefile.in: Rebuild.
gcc/:
	* configure.ac: Invoke AC_PROG_CXX.  Separate C specific warnings
	from loose_warn into c_loose_warn and from strict_warn into
	c_strict_warn.  Set and substitute warn_cxxflags.  Check for
	--enable-build-with-cxx.  Set and substitute
	ENABLE_BUILD_WITH_CXX.  Set and substitute HOST_LIBS.
	* Makefile.in (CXXFLAGS): New variable.
	(C_LOOSE_WARN, C_STRICT_WARN): New variables.
	(GCC_WARN_CFLAGS): Add $(C_LOOSE_WARN).  Add $(C_STRICT_WARN) if
	the default is the same as $(STRICT_WARN).
	(GCC_WARN_CXXFLAGS, WARN_CXXFLAGS): New variables.
	(CXX): New variable.
	(COMPILER): New value if ENABLE_BUILD_WITH_CXX.
	(COMPILER_FLAGS, LINKER, LINKER_FLAGS): Likewise.
	(ALL_COMPILERFLAGS, ALL_LINKERFLAGS): Likewise.
	(HOST_LIBS): New variable.
	(GCC_CFLAGS): Add $(C_LOOSE_WARN).
	(ALL_CXXFLAGS): New variable.
	(LIBS, BACKENDLIBS): Add $(HOST_LIBS).
	* doc/install.texi (Configuration): Document
	--enable-build-with-cxx, --with-stage1-ldflags,
	--with-stage1-libs, --with-boot-ldflags, --with-boot-libs.
	* configure: Rebuild.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@148889 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 30 insertions, 5 deletions

diff --git a/Makefile.tpl b/Makefile.tpl
index 44c2bd88f90..24952813347 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -120,6 +120,19 @@ BUILD_SUBDIR = @build_subdir@
 # directories built for the build system.
 BUILD_CONFIGARGS = @build_configargs@ --with-build-subdir="$(BUILD_SUBDIR)"
 
+# Linker flags to use on the host, for stage1 or when not
+# bootstrapping.
+STAGE1_LDFLAGS = @stage1_ldflags@
+
+# Libraries to use on the host, for stage1 or when not bootstrapping.
+STAGE1_LIBS = @stage1_libs@
+
+# Linker flags to use for stage2 and later.
+POSTSTAGE1_LDFLAGS = @poststage1_ldflags@
+
+# Libraries to use for stage2 and later.
+POSTSTAGE1_LIBS = @poststage1_libs@
+
 # This is the list of variables to export in the environment when
 # configuring any subdirectory.  It must also be exported whenever
 # recursing into a build directory in case that directory's Makefile
@@ -185,7 +198,7 @@ HOST_EXPORTS = \
 	CC_FOR_BUILD="$(CC_FOR_BUILD)"; export CC_FOR_BUILD; \
 	DLLTOOL="$(DLLTOOL)"; export DLLTOOL; \
 	LD="$(LD)"; export LD; \
-	LDFLAGS="$(LDFLAGS)"; export LDFLAGS; \
+	LDFLAGS="$(STAGE1_LDFLAGS) $(LDFLAGS)"; export LDFLAGS; \
 	NM="$(NM)"; export NM; \
 	RANLIB="$(RANLIB)"; export RANLIB; \
 	WINDRES="$(WINDRES)"; export WINDRES; \
@@ -200,6 +213,7 @@ HOST_EXPORTS = \
 	OBJDUMP_FOR_TARGET="$(OBJDUMP_FOR_TARGET)"; export OBJDUMP_FOR_TARGET; \
 	RANLIB_FOR_TARGET="$(RANLIB_FOR_TARGET)"; export RANLIB_FOR_TARGET; \
 	TOPLEVEL_CONFIGURE_ARGUMENTS="$(TOPLEVEL_CONFIGURE_ARGUMENTS)"; export TOPLEVEL_CONFIGURE_ARGUMENTS; \
+	HOST_LIBS="$(STAGE1_LIBS)"; export HOST_LIBS; \
 	GMPLIBS="$(HOST_GMPLIBS)"; export GMPLIBS; \
 	GMPINC="$(HOST_GMPINC)"; export GMPINC; \
 	PPLLIBS="$(HOST_PPLLIBS)"; export PPLLIBS; \
@@ -218,8 +232,16 @@ POSTSTAGE1_HOST_EXPORTS = \
 	  -B$$r/$(HOST_SUBDIR)/prev-gcc/ -B$(build_tooldir)/bin/ \
 	  $(XGCC_FLAGS_FOR_TARGET) $$TFLAGS"; export CC; \
 	CC_FOR_BUILD="$$CC"; export CC_FOR_BUILD; \
-	GNATBIND="$$r/$(HOST_SUBDIR)/prev-gcc/gnatbind"; export GNATBIND \
-	LDFLAGS="$(BOOT_LDFLAGS)"; export LDFLAGS;
+	CXX="$(STAGE_CC_WRAPPER) $$r/$(HOST_SUBDIR)/prev-gcc/g++$(exeext) \
+	  -B$$r/$(HOST_SUBDIR)/prev-gcc/ -B$(build_tooldir)/bin/ -nostdinc++ \
+	  -I$$r/prev-$(TARGET_SUBDIR)/libstdc++-v3/include/$(TARGET_SUBDIR) \
+	  -I$$r/prev-$(TARGET_SUBDIR)/libstdc++-v3/include \
+	  -I$$r/$(srcdir)/libstdc++-v3/libsupc++ \
+	  -L$$r/prev-$(TARGET_SUBDIR)/libstdc++-v3/src/.libs"; export CXX; \
+	CXX_FOR_BUILD="$$CXX"; export CXX_FOR_BUILD; \
+	GNATBIND="$$r/$(HOST_SUBDIR)/prev-gcc/gnatbind"; export GNATBIND; \
+	LDFLAGS="$(POSTSTAGE1_LDFLAGS) $(BOOT_LDFLAGS)"; export LDFLAGS; \
+	HOST_LIBS="$(POSTSTAGE1_LIBS)"; export HOST_LIBS;
 
 # Target libraries are put under this directory:
 TARGET_SUBDIR = @target_subdir@
@@ -540,8 +562,11 @@ X11_FLAGS_TO_PASS = \
 # Flags to pass to stage2 and later makes.
 
 POSTSTAGE1_FLAGS_TO_PASS = \
-	CC="$${CC}" CC_FOR_BUILD="$${CC_FOR_BUILD}" GNATBIND="$${GNATBIND}" \
-	LDFLAGS="$(BOOT_LDFLAGS)" \
+	CC="$${CC}" CC_FOR_BUILD="$${CC_FOR_BUILD}" \
+	CXX="$${CXX}" CXX_FOR_BUILD="$${CXX_FOR_BUILD}" \
+	GNATBIND="$${GNATBIND}" \
+	LDFLAGS="$(POSTSTAGE1_LDFLAGS) $(BOOT_LDFLAGS)" \
+	HOST_LIBS="$(POSTSTAGE1_LIBS)" \
 	"`echo 'ADAFLAGS=$(BOOT_ADAFLAGS)' | sed -e s'/[^=][^=]*=$$/XFOO=/'`"
 
 # Flags to pass down to makes which are built with the target environment.