begin factorization of common GCC stuff

a lot of configuration/definition is shared between platforms that build
using gcc.
This start to regroup things that are common into 2 files
com_GCC_defs.mk and com_GCC_class.mk
this can be expanded to be, more generically com_$(COM)_defs/class

The reson for 2 files is that some step need to modfify common definitions
based on the platform and some common definitions need platform defined
value.
with these 2 files we can do a
platform - compiler - platform - compiler - platfrom
sandwich that should cover every scenario.

7 files changed, 255 insertions, 456 deletions

diff --git a/solenv/gbuild/platform/android.mk b/solenv/gbuild/platform/android.mk
index 03f85ec49712..92ad3661832a 100644
--- a/solenv/gbuild/platform/android.mk
+++ b/solenv/gbuild/platform/android.mk
@@ -39,25 +39,4 @@ include $(GBUILDDIR)/platform/unxgcc.mk
 # No unit testing can be run
 gb_CppunitTest_CPPTESTPRECOMMAND := :
 
-# Set the proper enirotment variable so that our BUILD platform
-# build-time shared libraries are found.
-ifeq ($(OS_FOR_BUILD),MACOSX)
-gb_Helper_set_ld_path := DYLD_LIBRARY_PATH=$(OUTDIR_FOR_BUILD)/lib
-else
-gb_Helper_set_ld_path := LD_LIBRARY_PATH=$(OUTDIR_FOR_BUILD)/lib
-endif
-
-# UnoApiTarget
-
-gb_UnoApiTarget_IDLCTARGET := $(OUTDIR_FOR_BUILD)/bin/idlc
-gb_UnoApiTarget_IDLCCOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_IDLCTARGET)
-gb_UnoApiTarget_REGMERGETARGET := $(OUTDIR_FOR_BUILD)/bin/regmerge
-gb_UnoApiTarget_REGMERGECOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_REGMERGETARGET)
-gb_UnoApiTarget_REGCOMPARETARGET := $(OUTDIR_FOR_BUILD)/bin/regcompare
-gb_UnoApiTarget_REGCOMPARECOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_REGCOMPARETARGET)
-gb_UnoApiTarget_CPPUMAKERTARGET := $(OUTDIR_FOR_BUILD)/bin/cppumaker
-gb_UnoApiTarget_CPPUMAKERCOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_CPPUMAKERTARGET)
-gb_UnoApiTarget_REGVIEWTARGET := $(OUTDIR_FOR_BUILD)/bin/regview
-gb_UnoApiTarget_REGVIEWCOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_REGVIEWTARGET)
-
 # vim: set noet sw=4:
diff --git a/solenv/gbuild/platform/com_GCC_class.mk b/solenv/gbuild/platform/com_GCC_class.mk
new file mode 100644
index 000000000000..ccd76bf1f3fb
--- /dev/null
+++ b/solenv/gbuild/platform/com_GCC_class.mk
@@ -0,0 +1,72 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+# Version: MPL 1.1 / GPLv3+ / LGPLv3+
+#
+# The contents of this file are subject to the Mozilla Public License Version
+# 1.1 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+# http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+# for the specific language governing rights and limitations under the
+# License.
+#
+# The Initial Developer of the Original Code is
+# Norbert Thiebaud <nthiebaud@gmail.com> (C) 2010, All Rights Reserved.
+#
+# Alternatively, the contents of this file may be used under the terms of
+# either the GNU General Public License Version 3 or later (the "GPLv3+"), or
+# the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"),
+# in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
+# instead of those above.
+
+
+# CObject class
+
+# $(call gb_CObject__command,object,relative-source,source,dep-file)
+define gb_CObject__command
+$(call gb_Output_announce,$(2),$(true),C  ,3)
+$(call gb_Helper_abbreviate_dirs,\
+	mkdir -p $(dir $(1)) $(dir $(4)) && \
+	$(gb_CC) \
+		$(DEFS) \
+		$(if $(filter Library,$(TARGETTYPE)),$(gb_Library_LTOFLAGS)) \
+		$(T_CFLAGS) \
+		-c $(3) \
+		-o $(1) \
+		-MMD -MT $(1) \
+		-MP -MF $(4) \
+		-I$(dir $(3)) \
+		$(INCLUDE))
+endef
+
+# CxxObject class
+
+# $(call gb_CxxObject__command,object,relative-source,source,dep-file)
+define gb_CxxObject__command
+$(call gb_Output_announce,$(2),$(true),CXX,3)
+$(call gb_Helper_abbreviate_dirs,\
+	mkdir -p $(dir $(1)) $(dir $(4)) && \
+	$(gb_CXX) \
+		$(DEFS) \
+		$(if $(filter Library,$(TARGETTYPE)),$(gb_Library_LTOFLAGS)) \
+		$(T_CXXFLAGS) \
+		-c $(3) \
+		-o $(1) \
+		-MMD -MT $(1) \
+		-MP -MF $(4) \
+		-I$(dir $(3)) \
+		$(INCLUDE_STL) $(INCLUDE))
+endef
+
+gb_UnoApiTarget_IDLCTARGET := $(OUTDIR_FOR_BUILD)/bin/idlc
+gb_UnoApiTarget_IDLCCOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_IDLCTARGET)
+gb_UnoApiTarget_REGMERGETARGET := $(OUTDIR_FOR_BUILD)/bin/regmerge
+gb_UnoApiTarget_REGMERGECOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_REGMERGETARGET)
+gb_UnoApiTarget_REGCOMPARETARGET := $(OUTDIR_FOR_BUILD)/bin/regcompare
+gb_UnoApiTarget_REGCOMPARECOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_REGCOMPARETARGET)
+gb_UnoApiTarget_CPPUMAKERTARGET := $(OUTDIR_FOR_BUILD)/bin/cppumaker
+gb_UnoApiTarget_CPPUMAKERCOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_CPPUMAKERTARGET)
+gb_UnoApiTarget_REGVIEWTARGET := $(OUTDIR_FOR_BUILD)/bin/regview
+gb_UnoApiTarget_REGVIEWCOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_FOR_BUILD)/bin $(gb_UnoApiTarget_REGVIEWTARGET)
+
diff --git a/solenv/gbuild/platform/com_GCC_defs.mk b/solenv/gbuild/platform/com_GCC_defs.mk
new file mode 100644
index 000000000000..c73219eabad7
--- /dev/null
+++ b/solenv/gbuild/platform/com_GCC_defs.mk
@@ -0,0 +1,130 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+# Version: MPL 1.1 / GPLv3+ / LGPLv3+
+#
+# The contents of this file are subject to the Mozilla Public License Version
+# 1.1 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+# http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+# for the specific language governing rights and limitations under the
+# License.
+#
+# The Initial Developer of the Original Code is
+# Norbert Thiebaud <nthiebaud@gmail.com> (C) 2010, All Rights Reserved.
+#
+# Alternatively, the contents of this file may be used under the terms of
+# either the GNU General Public License Version 3 or later (the "GPLv3+"), or
+# the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"),
+# in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
+# instead of those above.
+
+gb_AWK := awk
+gb_YACC := bison
+
+gb_CLASSPATHSEP := :
+
+# use CC/CXX if they are nondefaults
+ifneq ($(origin CC),default)
+gb_CC := $(CC)
+gb_GCCP := $(CC)
+else
+gb_CC := gcc
+gb_GCCP := gcc
+endif
+
+ifneq ($(origin CXX),default)
+gb_CXX := $(CXX)
+else
+gb_CXX := g++
+endif
+
+ifneq ($(origin AR),default)
+gb_AR := $(AR)
+else
+gb_AR := $(shell $(CC) -print-prog-name=ar)
+endif
+
+ifeq ($(strip $(gb_COMPILERDEFAULTOPTFLAGS)),)
+gb_COMPILERDEFAULTOPTFLAGS := -O2
+endif
+
+gb_CCVER := $(shell $(gb_CC) -dumpversion | $(gb_AWK) -F. -- '{ print $$1*10000+$$2*100+$$3 }')
+
+gb_COMPILERDEFS := \
+	-D$(COM) \
+	-DCPPU_ENV=gcc3 \
+	-DGXX_INCLUDE_PATH=$(GXX_INCLUDE_PATH) \
+
+gb_CFLAGS_COMMON := \
+	-Wall \
+	-Wendif-labels \
+	-Wextra \
+	-fmessage-length=0 \
+	-fno-common \
+	-pipe \
+
+gb_CXXFLAGS_COMMON := \
+	-Wall \
+	-Wendif-labels \
+	-Wextra \
+	-fmessage-length=0 \
+	-fno-common \
+	-pipe \
+
+ifneq ($(EXTERNAL_WARNINGS_NOT_ERRORS),TRUE)
+gb_CFLAGS_WERROR := -Werror -DLIBO_WERROR
+gb_CXXFLAGS_WERROR := -Werror -DLIBO_WERROR
+endif
+
+ifeq ($(ENABLE_LTO),TRUE)
+gb_Library_LTOFLAGS := -flto
+endif
+
+gb_LinkTarget_EXCEPTIONFLAGS := \
+	-DEXCEPTIONS_ON \
+	-fexceptions \
+	-fno-enforce-eh-specs \
+
+gb_LinkTarget_NOEXCEPTIONFLAGS := \
+	-DEXCEPTIONS_OFF \
+	-fno-exceptions \
+
+
+# optimization level
+ifneq ($(gb_DEBUGLEVEL),0)
+gb_COMPILEROPTFLAGS := -O0
+else
+gb_COMPILEROPTFLAGS := $(gb_COMPILERDEFAULTOPTFLAGS)
+endif
+gb_COMPILERNOOPTFLAGS := -O0
+
+gb_LinkTarget_INCLUDE := $(filter-out %/stl, $(subst -I. , ,$(SOLARINC)))
+gb_LinkTarget_INCLUDE_STL := $(filter %/stl, $(subst -I. , ,$(SOLARINC)))
+
+
+
+ifeq ($(OS_FOR_BUILD),MACOSX)
+gb_Helper_LIBRARY_PATH_VAR := DYLD_LIBRARY_PATH
+else ifeq ($(OS_FOR_BUILD),WNT)
+# In theory possible if cross-compiling to some Unix from Windows,
+# in practice strongly discouraged to even try that
+gb_Helper_LIBRARY_PATH_VAR := PATH
+else
+gb_Helper_LIBRARY_PATH_VAR := LD_LIBRARY_PATH
+endif
+
+gb_Helper_set_ld_path := $(gb_Helper_LIBRARY_PATH_VAR)=$(OUTDIR_FOR_BUILD)/lib
+
+
+# convert parameters filesystem root to native notation
+# does some real work only on windows, make sure not to
+# break the dummy implementations on unx*
+define gb_Helper_convert_native
+$(1)
+endef
+
+gb_Helper_OUTDIRLIBDIR := $(OUTDIR)/lib
+
+gb_Helper_abbreviate_dirs_native = $(gb_Helper_abbreviate_dirs)
diff --git a/solenv/gbuild/platform/ios.mk b/solenv/gbuild/platform/ios.mk
index 2f954c1042a5..b10a3916c144 100644
--- a/solenv/gbuild/platform/ios.mk
+++ b/solenv/gbuild/platform/ios.mk
@@ -29,8 +29,9 @@
 GUI := UNX
 COM := GCC
 
-# Darwin mktemp -t expects a prefix, not a pattern
-gb_MKTEMP := /usr/bin/mktemp -t gbuild.
+gb_CPUDEFS := -DARM32
+
+gb_COMPILERDEFAULTOPTFLAGS := -O2
 
 ifeq ($(CC),)
 $(error You must set CC in the environment. See README.cross for example.)
@@ -39,13 +40,10 @@ ifeq ($(CXX),)
 $(error You must set CXX in the environment. See README.cross for example.)
 endif
 
-gb_CC := $(CC)
-gb_CXX := $(CXX)
-gb_GCCP := $(CC)
-gb_AR := ar
-gb_AWK := awk
-gb_CLASSPATHSEP := :
-gb_YACC := bison
+include $(GBUILDDIR)/platform/com_GCC_defs.mk
+
+# Darwin mktemp -t expects a prefix, not a pattern
+gb_MKTEMP := /usr/bin/mktemp -t gbuild.
 
 gb_OSDEFS := \
 	-D$(OS) \
@@ -56,35 +54,18 @@ gb_OSDEFS := \
 	-DNO_PTHREAD_PRIORITY \
 	$(EXTRA_CDEFS) \
 
-gb_COMPILERDEFS := \
-	-D$(COM) \
-	-DCPPU_ENV=gcc3 \
-	-DGXX_INCLUDE_PATH=$(GXX_INCLUDE_PATH) \
-
-gb_CPUDEFS := -DARM32
-
 gb_CFLAGS := \
-	-Wall \
-	-Wendif-labels \
-	-Wextra \
+	$(gb_CFLAGS_COMMON) \
 	-Wshadow \
-	-fmessage-length=0 \
-	-fno-common \
 	-fno-strict-aliasing \
-	-pipe \
 
 gb_CXXFLAGS := \
-	-Wall \
-	-Wendif-labels \
-	-Wextra \
+	$(gb_CXXFLAGS_COMMON) \
 	-Wno-ctor-dtor-privacy \
 	-Wno-non-virtual-dtor \
-	-fmessage-length=0 \
-	-fno-common \
 	-fno-strict-aliasing \
 	-fsigned-char \
 	-malign-natural \
-	-pipe \
 	#-Wshadow \ break in compiler headers already
 	#-fsigned-char \ might be removed?
 	#-malign-natural \ might be removed?
@@ -96,47 +77,10 @@ gb_OBJCXXFLAGS := -x objective-c++ $(gb_OBJC_OBJCXX_COMMON_FLAGS)
 
 gb_OBJCFLAGS := -x objective-c $(gb_OBJC_OBJCXX_COMMON_FLAGS)
 
-ifneq ($(EXTERNAL_WARNINGS_NOT_ERRORS),TRUE)
-gb_CFLAGS_WERROR := -Werror -DLIBO_WERROR
-gb_CXXFLAGS_WERROR := -Werror -DLIBO_WERROR
-endif
-
-gb_LinkTarget_EXCEPTIONFLAGS := \
-	-DEXCEPTIONS_ON \
-	-fexceptions \
-	-fno-enforce-eh-specs \
-
-gb_LinkTarget_NOEXCEPTIONFLAGS := \
-	-DEXCEPTIONS_OFF \
-	-fno-exceptions \
-
 gb_LinkTarget_LDFLAGS := \
 	$(subst -L../lib , ,$(SOLARLIB)) \
 #man ld says: obsolete	-Wl,-multiply_defined,suppress \
 
-ifneq ($(gb_DEBUGLEVEL),0)
-gb_COMPILEROPTFLAGS := -O0
-else
-gb_COMPILEROPTFLAGS := -O2
-endif
-
-gb_COMPILERNOOPTFLAGS := -O0
-
-# Helper class
-
-gb_Helper_abbreviate_dirs_native = $(gb_Helper_abbreviate_dirs)
-
-gb_Helper_set_ld_path := DYLD_LIBRARY_PATH=$(OUTDIR_FOR_BUILD)/lib
-
-# convert parameters filesystem root to native notation
-# does some real work only on windows, make sure not to
-# break the dummy implementations on unx*
-define gb_Helper_convert_native
-$(1)
-endef
-
-gb_Helper_OUTDIRLIBDIR := $(OUTDIR)/lib
-
 # YaccTarget class
 
 define gb_YaccTarget__command
@@ -148,43 +92,6 @@ $(call gb_Helper_abbreviate_dirs,\
 endef
 
 
-# CObject class
-
-define gb_CObject__command
-$(call gb_Output_announce,$(2),$(true),C  ,3)
-$(call gb_Helper_abbreviate_dirs,\
-	mkdir -p $(dir $(1)) $(dir $(4)) && \
-	$(gb_CC) \
-		$(DEFS) \
-		$(T_CFLAGS) \
-		-c $(3) \
-		-o $(1) \
-		-MMD -MT $(1) \
-		-MP -MF $(4) \
-		-I$(dir $(3)) \
-		$(INCLUDE))
-endef
-
-
-# CxxObject class
-
-# N.B: $(T_CXXFLAGS) may contain -x objective-c++, which must come before -c
-define gb_CxxObject__command
-$(call gb_Output_announce,$(2),$(true),CXX,3)
-$(call gb_Helper_abbreviate_dirs,\
-	mkdir -p $(dir $(1)) $(dir $(4)) && \
-	$(gb_CXX) \
-		$(DEFS) \
-		$(T_CXXFLAGS) \
-		-c $(3) \
-		-o $(1) \
-		-MMD -MT $(1) \
-		-MP -MF $(4) \
-		-I$(dir $(3)) \
-		$(INCLUDE_STL) $(INCLUDE))
-endef
-
-
 # ObjCxxObject class
 
 define gb_ObjCxxObject__command
@@ -234,9 +141,6 @@ gb_LinkTarget_OBJCXXFLAGS += -g
 gb_LinkTarget_OBJCFLAGS += -g
 endif
 
-gb_LinkTarget_INCLUDE := $(filter-out %/stl, $(subst -I. , ,$(SOLARINC)))
-gb_LinkTarget_INCLUDE_STL := $(filter %/stl, $(subst -I. , ,$(SOLARINC)))
-
 # FIXME framework handling very hackish
 define gb_LinkTarget__get_liblinkflags
 $(patsubst lib%.a,-l%,$(foreach lib,$(filter-out $(gb_Library__FRAMEWORKS) $(gb_Library_UNOLIBS_OOO),$(1)),$(call gb_Library_get_filename,$(lib)))) \
@@ -433,4 +337,6 @@ gb_UnoApiTarget_REGVIEWCOMMAND := DYLD_LIBRARY_PATH=$(OUTDIR_FOR_BUILD)/lib SOLA
 # Python
 gb_PYTHON_PRECOMMAND := DYLD_LIBRARY_PATH=$(OUTDIR_FOR_BUILD)/lib
 
+include $(GBUILDDIR)/platform/com_GCC_class.mk
+
 # vim: set noet sw=4:
diff --git a/solenv/gbuild/platform/macosx.mk b/solenv/gbuild/platform/macosx.mk
index 616550b69c33..45fb9a7f46b0 100644
--- a/solenv/gbuild/platform/macosx.mk
+++ b/solenv/gbuild/platform/macosx.mk
@@ -29,26 +29,22 @@
 GUI := UNX
 COM := GCC
 
+gb_SDKDIR := $(MACOSX_SDK_PATH)
+
+ifeq ($(CPUNAME),POWERPC)
+gb_CPUDEFS := -DPPC
+else
+gb_CPUDEFS := -DX86
+endif
+
+gb_COMPILERDEFAULTOPTFLAGS := -O2
+
+include $(GBUILDDIR)/platform/com_GCC_defs.mk
+
+
 # Darwin mktemp -t expects a prefix, not a pattern
 gb_MKTEMP ?= /usr/bin/mktemp -t gbuild.
 
-gb_CC := cc
-gb_CXX := g++
-gb_GCCP := gcc
-gb_AR := ar
-gb_AWK := awk
-gb_CLASSPATHSEP := :
-gb_YACC := bison
-
-# use CC/CXX if they are nondefaults
-ifneq ($(origin CC),default)
-gb_CC := $(CC)
-gb_GCCP := $(CC)
-endif
-ifneq ($(origin CXX),default)
-gb_CXX := $(CXX)
-endif
-gb_CCVER := $(shell $(gb_CC) -dumpversion | $(gb_AWK) -F. -- '{ print $$1*10000+$$2*100+$$3 }')
 
 gb_OSDEFS := \
 	-D$(OS) \
@@ -62,46 +58,28 @@ gb_OSDEFS := \
 	-DMAC_OS_X_VERSION_MAX_ALLOWED=$(MAC_OS_X_VERSION_MAX_ALLOWED) \
 	$(EXTRA_CDEFS) \
 
-gb_COMPILERDEFS := \
-	-D$(COM) \
+
+gb_COMPILERDEFS += \
 	-DHAVE_GCC_VISIBILITY_FEATURE \
-	-DCPPU_ENV=gcc3 \
-	-DGXX_INCLUDE_PATH=$(GXX_INCLUDE_PATH) \
 
-ifeq ($(CPUNAME),POWERPC)
-gb_CPUDEFS := -DPPC
-else
-gb_CPUDEFS := -DX86
-endif
 
-gb_SDKDIR := $(MACOSX_SDK_PATH)
 
 gb_CFLAGS := \
 	-isysroot $(gb_SDKDIR) \
-	-Wall \
-	-Wendif-labels \
-	-Wextra \
+	$(gb_CFLAGS_COMMON) \
 	-Wshadow \
 	-fPIC \
-	-fmessage-length=0 \
-	-fno-common \
 	-fno-strict-aliasing \
-	-pipe \
 
 gb_CXXFLAGS := \
 	-isysroot $(gb_SDKDIR) \
-	-Wall \
-	-Wendif-labels \
-	-Wextra \
+	$(gb_CXXFLAGS_COMMON) \
+	-fPIC \
 	-Wno-ctor-dtor-privacy \
 	-Wno-non-virtual-dtor \
-	-fPIC \
-	-fmessage-length=0 \
-	-fno-common \
 	-fno-strict-aliasing \
 	-fsigned-char \
 	-malign-natural \
-	-pipe \
 	#-Wshadow \ break in compiler headers already
 	#-fsigned-char \ might be removed?
 	#-malign-natural \ might be removed?
@@ -120,24 +98,6 @@ gb_OBJCXXFLAGS := -x objective-c++ -fobjc-exceptions
 
 gb_OBJCFLAGS := -x objective-c
 
-ifneq ($(EXTERNAL_WARNINGS_NOT_ERRORS),TRUE)
-gb_CFLAGS_WERROR := -Werror -DLIBO_WERROR
-gb_CXXFLAGS_WERROR := -Werror -DLIBO_WERROR
-endif
-
-ifeq ($(ENABLE_LTO),TRUE)
-gb_Library_LTOFLAGS := -flto
-endif
-
-gb_LinkTarget_EXCEPTIONFLAGS := \
-	-DEXCEPTIONS_ON \
-	-fexceptions \
-	-fno-enforce-eh-specs \
-
-gb_LinkTarget_NOEXCEPTIONFLAGS := \
-	-DEXCEPTIONS_OFF \
-	-fno-exceptions \
-
 gb_LinkTarget_LDFLAGS := \
 	-Wl,-syslibroot,$(gb_SDKDIR) \
 	$(subst -L../lib , ,$(SOLARLIB)) \
@@ -153,21 +113,6 @@ endif
 
 gb_COMPILERNOOPTFLAGS := -O0
 
-# Helper class
-
-gb_Helper_abbreviate_dirs_native = $(gb_Helper_abbreviate_dirs)
-
-gb_Helper_set_ld_path := DYLD_LIBRARY_PATH=$(OUTDIR)/lib
-
-# convert parameters filesystem root to native notation
-# does some real work only on windows, make sure not to
-# break the dummy implementations on unx*
-define gb_Helper_convert_native
-$(1)
-endef
-
-gb_Helper_OUTDIRLIBDIR := $(OUTDIR)/lib
-
 # YaccTarget class
 
 ifeq ($(CPUNAME),POWERPC)
@@ -194,44 +139,6 @@ $(call gb_Helper_abbreviate_dirs,\
 
 endef
 endif
-# CObject class
-
-define gb_CObject__command
-$(call gb_Output_announce,$(2),$(true),C  ,3)
-$(call gb_Helper_abbreviate_dirs,\
-	mkdir -p $(dir $(1)) $(dir $(4)) && \
-	$(gb_CC) \
-		$(DEFS) \
-		$(if $(filter Library,$(TARGETTYPE)),$(gb_Library_LTOFLAGS)) \
-		$(T_CFLAGS) \
-		-c $(3) \
-		-o $(1) \
-		-MMD -MT $(1) \
-		-MP -MF $(4) \
-		-I$(dir $(3)) \
-		$(INCLUDE))
-endef
-
-
-# CxxObject class
-
-# N.B: $(CXXFLAGS) may contain -x objective-c++, which must come before -c
-define gb_CxxObject__command
-$(call gb_Output_announce,$(2),$(true),CXX,3)
-$(call gb_Helper_abbreviate_dirs,\
-	mkdir -p $(dir $(1)) $(dir $(4)) && \
-	$(gb_CXX) \
-		$(DEFS) \
-		$(if $(filter Library,$(TARGETTYPE)),$(gb_Library_LTOFLAGS)) \
-		$(T_CXXFLAGS) \
-		-c $(3) \
-		-o $(1) \
-		-MMD -MT $(1) \
-		-MP -MF $(4) \
-		-I$(dir $(3)) \
-		$(INCLUDE_STL) $(INCLUDE))
-endef
-
 
 # ObjCxxObject class
 
@@ -298,9 +205,6 @@ gb_LinkTarget_OBJCFLAGS += -g
 gb_LinkTarget_OBJCXXFLAGS += -g
 endif
 
-gb_LinkTarget_INCLUDE := $(filter-out %/stl, $(subst -I. , ,$(SOLARINC)))
-gb_LinkTarget_INCLUDE_STL := $(filter %/stl, $(subst -I. , ,$(SOLARINC)))
-
 # FIXME framework handling very hackish
 define gb_LinkTarget__get_liblinkflags
 $(patsubst lib%.dylib,-l%,$(foreach lib,$(filter-out $(gb_Library__FRAMEWORKS),$(1)),$(call gb_Library_get_filename,$(lib)))) \
@@ -526,4 +430,6 @@ gb_UnoApiTarget_REGVIEWCOMMAND := DYLD_LIBRARY_PATH=$(OUTDIR)/lib SOLARBINDIR=$(
 # Python
 gb_PYTHON_PRECOMMAND := DYLD_LIBRARY_PATH=$(OUTDIR)/lib
 
+include $(GBUILDDIR)/platform/com_GCC_class.mk
+
 # vim: set noet sw=4:
diff --git a/solenv/gbuild/platform/unxgcc.mk b/solenv/gbuild/platform/unxgcc.mk
index 0cf599154cb3..bc3f61a5b52e 100644
--- a/solenv/gbuild/platform/unxgcc.mk
+++ b/solenv/gbuild/platform/unxgcc.mk
@@ -29,24 +29,10 @@
 GUI := UNX
 COM := GCC
 
+include $(GBUILDDIR)/platform/com_GCC_defs.mk
+
 gb_MKTEMP := mktemp -t gbuild.XXXXXX
 
-gb_CC := gcc
-gb_CXX := g++
-gb_GCCP := gcc
-gb_AR := ar
-gb_AWK := awk
-gb_CLASSPATHSEP := :
-gb_YACC := bison
-
-# use CC/CXX if they are nondefaults
-ifneq ($(origin CC),default)
-gb_CC := $(CC)
-gb_GCCP := $(CC)
-endif
-ifneq ($(origin CXX),default)
-gb_CXX := $(CXX)
-endif
 ifneq ($(origin AR),default)
 gb_AR := $(AR)
 endif
@@ -62,34 +48,19 @@ ifeq ($(GXX_INCLUDE_PATH),)
 GXX_INCLUDE_PATH=$(COMPATH)/include/c++/$(shell gcc -dumpversion)
 endif
 
-gb_COMPILERDEFS := \
-	-D$(COM) \
-	-DCPPU_ENV=gcc3 \
-	-DGXX_INCLUDE_PATH=$(GXX_INCLUDE_PATH) \
-
 gb_CFLAGS := \
-	-Wall \
+	$(gb_CFLAGS_COMMON) \
+	-fPIC \
 	-Wdeclaration-after-statement \
-	-Wendif-labels \
-	-Wextra \
 	-Wshadow \
-	-fPIC \
-	-fmessage-length=0 \
-	-fno-common \
-	-pipe \
 
 gb_CXXFLAGS := \
-	-Wall \
-	-Wendif-labels \
-	-Wextra \
+	$(gb_CXXFLAGS_COMMON) \
+	-fPIC \
 	-Wshadow \
 	-Wsign-promo \
 	-Woverloaded-virtual \
 	-Wno-non-virtual-dtor \
-	-fPIC \
-	-fmessage-length=0 \
-	-fno-common \
-	-pipe \
 
 ifeq ($(HAVE_GCC_VISIBILITY_FEATURE),TRUE)
 gb_COMPILERDEFS += \
@@ -128,11 +99,6 @@ gb_CFLAGS += -fno-strict-aliasing
 gb_CXXFLAGS += -fno-strict-aliasing
 endif
 
-ifneq ($(EXTERNAL_WARNINGS_NOT_ERRORS),TRUE)
-gb_CFLAGS_WERROR := -Werror -DLIBO_WERROR
-gb_CXXFLAGS_WERROR := -Werror -DLIBO_WERROR
-endif
-
 ifeq ($(HAVE_CXX0X),TRUE)
 #Currently, as well as for its own merits, c++11/c++0x mode allows use to use
 #a template for SAL_N_ELEMENTS to detect at compiler time its misuse
@@ -151,7 +117,6 @@ endif
 endif
 
 ifeq ($(ENABLE_LTO),TRUE)
-gb_Library_LTOFLAGS := -flto
 gb_LinkTarget_LDFLAGS += -fuse-linker-plugin $(gb_COMPILERDEFAULTOPTFLAGS)
 endif
 
@@ -161,14 +126,6 @@ gb_CFLAGS += --sysroot=$(SYSBASE)
 gb_LinkTarget_LDFLAGS += \
 	-Wl,--sysroot=$(SYSBASE)
 endif
-gb_LinkTarget_EXCEPTIONFLAGS := \
-	-DEXCEPTIONS_ON \
-	-fexceptions \
-	-fno-enforce-eh-specs \
-
-gb_LinkTarget_NOEXCEPTIONFLAGS := \
-	-DEXCEPTIONS_OFF \
-	-fno-exceptions \
 
 gb_LinkTarget_LDFLAGS += \
 	-Wl,-rpath-link,$(SYSBASE)/lib:$(SYSBASE)/usr/lib \
@@ -209,31 +166,6 @@ gb_DEBUG_CFLAGS := -ggdb3 -finline-limit=0 -fno-inline -fno-default-inline
 
 gb_COMPILERNOOPTFLAGS := -O0
 
-# Helper class
-
-gb_Helper_abbreviate_dirs_native = $(gb_Helper_abbreviate_dirs)
-
-ifeq ($(OS_FOR_BUILD),MACOSX)
-gb_Helper_LIBRARY_PATH_VAR := DYLD_LIBRARY_PATH
-else ifeq ($(OS_FOR_BUILD),WNT)
-# In theory possible if cross-compiling to some Unix from Windows,
-# in practice strongly discouraged to even try that
-gb_Helper_LIBRARY_PATH_VAR := PATH
-else
-gb_Helper_LIBRARY_PATH_VAR := LD_LIBRARY_PATH
-endif
-
-gb_Helper_set_ld_path := $(gb_Helper_LIBRARY_PATH_VAR)=$(OUTDIR_FOR_BUILD)/lib
-
-# convert parameters filesystem root to native notation
-# does some real work only on windows, make sure not to
-# break the dummy implementations on unx*
-define gb_Helper_convert_native
-$(1)
-endef
-
-gb_Helper_OUTDIRLIBDIR := $(OUTDIR)/lib
-
 # YaccTarget class
 
 define gb_YaccTarget__command
@@ -244,45 +176,6 @@ $(call gb_Helper_abbreviate_dirs,\
 
 endef
 
-# CObject class
-
-# $(call gb_CObject__command,object,relative-source,source,dep-file)
-define gb_CObject__command
-$(call gb_Output_announce,$(2),$(true),C  ,3)
-$(call gb_Helper_abbreviate_dirs,\
-	mkdir -p $(dir $(1)) $(dir $(4)) && \
-	$(gb_CC) \
-		$(DEFS) \
-		$(if $(filter Library,$(TARGETTYPE)),$(gb_Library_LTOFLAGS)) \
-		$(T_CFLAGS) \
-		-c $(3) \
-		-o $(1) \
-		-MMD -MT $(1) \
-		-MP -MF $(4) \
-		-I$(dir $(3)) \
-		$(INCLUDE))
-endef
-
-
-# CxxObject class
-
-# $(call gb_CxxObject__command,object,relative-source,source,dep-file)
-define gb_CxxObject__command
-$(call gb_Output_announce,$(2),$(true),CXX,3)
-$(call gb_Helper_abbreviate_dirs,\
-	mkdir -p $(dir $(1)) $(dir $(4)) && \
-	$(gb_CXX) \
-		$(DEFS) \
-		$(if $(filter Library,$(TARGETTYPE)),$(gb_Library_LTOFLAGS)) \
-		$(T_CXXFLAGS) \
-		-c $(3) \
-		-o $(1) \
-		-MMD -MT $(1) \
-		-MP -MF $(4) \
-		-I$(dir $(3)) \
-		$(INCLUDE_STL) $(INCLUDE))
-endef
-
 
 # AsmObject class
 
@@ -327,9 +220,6 @@ gb_LinkTarget_CXXFLAGS += -ggdb2
 gb_LinkTarget_CFLAGS += -ggdb2
 endif
 
-gb_LinkTarget_INCLUDE := $(filter-out %/stl, $(subst -I. , ,$(SOLARINC)))
-gb_LinkTarget_INCLUDE_STL := $(filter %/stl, $(subst -I. , ,$(SOLARINC)))
-
 # note that `cat $(extraobjectlist)` is needed to build with older gcc versions, e.g. 4.1.2 on SLED10
 # we want to use @$(extraobjectlist) in the long run
 define gb_LinkTarget__command_dynamiclink
@@ -525,4 +415,6 @@ gb_UnoApiTarget_REGVIEWCOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR)
 # Python
 gb_PYTHON_PRECOMMAND := $(gb_Helper_set_ld_path) PYTHONHOME=$(OUTDIR)/lib/python PYTHONPATH=$(OUTDIR)/lib/python:$(OUTDIR)/lib/python/lib-dynload
 
+include $(GBUILDDIR)/platform/com_GCC_class.mk
+
 # vim: set noet sw=4:
diff --git a/solenv/gbuild/platform/winmingw.mk b/solenv/gbuild/platform/winmingw.mk
index ea3ae756dbb4..c25ef6f21e3e 100644
--- a/solenv/gbuild/platform/winmingw.mk
+++ b/solenv/gbuild/platform/winmingw.mk
@@ -29,17 +29,15 @@
 GUI := WNT
 COM := GCC
 
+gb_COMPILERDEFAULTOPTFLAGS := -Os
+gb_CPUDEFS := -D_M_IX86
+
+include $(GBUILDDIR)/platform/com_GCC_defs.mk
+
 gb_TMPDIR:=$(if $(TMPDIR),$(TMPDIR),/tmp)
 gb_MKTEMP := mktemp --tmpdir=$(gb_TMPDIR) gbuild.XXXXXX
 
-gb_CC := $(CC)
-gb_CXX := $(CXX)
-gb_AR := $(shell $(CC) -print-prog-name=ar)
-gb_AWK := awk
-gb_CLASSPATHSEP := :
-gb_YACC := bison
 gb_RC := $(WINDRES)
-gb_CCVER := $(shell $(gb_CC) -dumpversion | $(gb_AWK) -F. -- '{ print $$1*10000+$$2*100+$$3 }')
 
 gb_OSDEFS := \
 	-DWINVER=0x0500 \
@@ -52,17 +50,12 @@ ifeq ($(GXX_INCLUDE_PATH),)
 GXX_INCLUDE_PATH=$(COMPATH)/include/c++/$(shell gcc -dumpversion)
 endif
 
-gb_COMPILERDEFS := \
-	-DGCC \
-	-DGXX_INCLUDE_PATH=$(GXX_INCLUDE_PATH) \
-	-DCPPU_ENV=gcc3 \
+gb_COMPILERDEFS += \
 	-D_MT \
 	-D_NATIVE_WCHAR_T_DEFINED \
 	-D_MSC_EXTENSIONS \
 	-D_FORCENAMELESSUNION \
 
-gb_CPUDEFS := -D_M_IX86
-
 gb_RCDEFS := \
 	 -DWINVER=0x0400 \
 	 -DWIN32 \
@@ -70,49 +63,32 @@ gb_RCDEFS := \
 gb_RCFLAGS := \
 	 -V
 
-gb_CFLAGS := \
-	-Wall \
+gb_CFLAGS += \
+	$(gb_CFLAGS_COMMON) \
 	-Wdeclaration-after-statement \
-	-Wendif-labels \
-	-Wextra \
-	-fmessage-length=0 \
 	-fno-strict-aliasing \
-	-pipe \
 
 gb_CXXFLAGS := \
-	-Wall \
-	-Wendif-labels \
-	-Wextra \
+	$(gb_CXXFLAGS_COMMON) \
 	-Wno-ctor-dtor-privacy \
 	-Wno-non-virtual-dtor \
 	-Wreturn-type \
 	-Wshadow \
 	-Wuninitialized \
-	-fmessage-length=0 \
 	-fno-strict-aliasing \
-	-pipe \
 
-ifneq ($(EXTERNAL_WARNINGS_NOT_ERRORS),TRUE)
-gb_CFLAGS_WERROR := -Werror -DLIBO_WERROR
-gb_CXXFLAGS_WERROR := -Werror -DLIBO_WERROR
-endif
 
 ifneq ($(SYSBASE),)
 gb_CXXFLAGS += --sysroot=$(SYSBASE)
 gb_CFLAGS += --sysroot=$(SYSBASE)
 endif
-gb_LinkTarget_EXCEPTIONFLAGS := \
-	-DEXCEPTIONS_ON \
-	-fexceptions \
+
+gb_LinkTarget_EXCEPTIONFLAGS += \
 	-fno-enforce-eh-specs \
 
 gb_PrecompiledHeader_EXCEPTIONFLAGS := $(gb_LinkTarget_EXCEPTIONFLAGS)
 
 
-gb_LinkTarget_NOEXCEPTIONFLAGS := \
-	-DEXCEPTIONS_OFF \
-	-fno-exceptions \
-
 gb_NoexPrecompiledHeader_NOEXCEPTIONFLAGS := $(gb_LinkTarget_NOEXCEPTIONFLAGS)
 
 gb_LinkTarget_LDFLAGS := \
@@ -126,14 +102,6 @@ gb_LinkTarget_LDFLAGS += -shared-libgcc
 endif
 
 gb_DEBUG_CFLAGS := -ggdb3 -finline-limit=0 -fno-inline -fno-default-inline
-ifneq ($(gb_DEBUGLEVEL),0)
-
-gb_COMPILEROPTFLAGS := -O0
-else
-gb_COMPILEROPTFLAGS := -Os
-endif
-
-gb_COMPILERNOOPTFLAGS := -O0
 
 gb_STDLIBS := \
 	mingwthrd \
@@ -152,16 +120,6 @@ gb_Helper_WORKDIR_NATIVE := $(WORKDIR)
 gb_Helper_OUTDIR_NATIVE := $(OUTDIR)
 gb_Helper_REPODIR_NATIVE := $(REPODIR)
 
-gb_Helper_abbreviate_dirs_native = $(gb_Helper_abbreviate_dirs)
-
-# Set the proper enirotment variable so that our BUILD platform
-# build-time shared libraries are found.
-ifeq ($(OS_FOR_BUILD),MACOSX)
-gb_Helper_set_ld_path := DYLD_LIBRARY_PATH=$(OUTDIR_FOR_BUILD)/lib
-else
-gb_Helper_set_ld_path := LD_LIBRARY_PATH=$(OUTDIR_FOR_BUILD)/lib
-endif
-
 # Convert parameters filesystem root to native notation
 # does some real work only on Windows, and this file is for
 # cross-compilation.
@@ -169,8 +127,6 @@ define gb_Helper_convert_native
 $(1)
 endef
 
-gb_Helper_OUTDIRLIBDIR := $(OUTDIR)/bin
-
 # YaccTarget class
 
 define gb_YaccTarget__command
@@ -181,47 +137,6 @@ $(call gb_Helper_abbreviate_dirs,\
 
 endef
 
-# CObject class
-
-# We (LibreOffice) support MinGW only for cross-compilation. This is identical to
-# gb_CObject__command in unxgcc.mk
-
-# $(call gb_CObject__command,object,relative-source,source,dep-file)
-define gb_CObject__command
-$(call gb_Output_announce,$(2),$(true),C  ,3)
-$(call gb_Helper_abbreviate_dirs,\
-	mkdir -p $(dir $(1)) $(dir $(4)) && \
-	$(gb_CC) \
-		$(DEFS) \
-		$(T_CFLAGS) \
-		-c $(3) \
-		-o $(1) \
-		-MMD -MT $(1) \
-		-MP -MF $(4) \
-		-I$(dir $(3)) \
-		$(INCLUDE))
-endef
-
-
-# CxxObject class
-
-# $(call gb_CxxObject__command,object,relative-source,source,dep-file)
-define gb_CxxObject__command
-$(call gb_Output_announce,$(2),$(true),CXX,3)
-$(call gb_Helper_abbreviate_dirs,\
-	mkdir -p $(dir $(1)) $(dir $(4)) && \
-	$(gb_CXX) \
-		$(DEFS) \
-		$(T_CXXFLAGS) \
-		-c $(3) \
-		-o $(1) \
-		-MMD -MT $(1) \
-		-MP -MF $(4) \
-		-I$(dir $(3)) \
-		$(INCLUDE_STL) $(INCLUDE))
-endef
-
-
 # PrecompiledHeader class
 
 gb_PrecompiledHeader_EXT := .gch
@@ -340,12 +255,9 @@ gb_LinkTarget_CXXFLAGS += -ggdb2
 gb_LinkTarget_CFLAGS += -ggdb2
 endif
 
-gb_LinkTarget_INCLUDE :=\
-	$(filter-out %/stl, $(subst -I. , ,$(SOLARINC))) \
+gb_LinkTarget_INCLUDE +=\
 	$(foreach inc,$(subst ;, ,$(JDKINC)),-I$(inc)) \
 
-gb_LinkTarget_INCLUDE_STL := $(filter %/stl, $(subst -I. , ,$(SOLARINC)))
-
 define gb_LinkTarget__command_dynamiclinkexecutable
 $(call gb_Output_announce,$(2),$(true),LNK,4)
 $(call gb_Helper_abbreviate_dirs,\
@@ -677,4 +589,6 @@ gb_UnoApiTarget_REGVIEWCOMMAND := $(gb_Helper_set_ld_path) SOLARBINDIR=$(OUTDIR_
 # Python
 gb_PYTHON_PRECOMMAND :=  PATH="$${PATH}:$(OUTDIR)/bin" PYTHONHOME="$(OUTDIR)/lib/python" PYTHONPATH="$(OUTDIR)/lib/python;$(OUTDIR)/lib/python/lib-dynload"
 
+include $(GBUILDDIR)/platform/com_GCC_class.mk
+
 # vim: set noet sw=4: