diff -ru libreoffice-3.4.5.2/solenv/gbuild/platform/linux-POWERPC64.mk libreoffice-3.4.5.2/solenv/gbuild/platform/linux-POWERPC64.mk
--- libreoffice-3.4.5.2/solenv/gbuild/platform/linux-POWERPC64.mk	2012-06-08 09:43:20.530668539 +0100
+++ libreoffice-3.4.5.2/solenv/gbuild/platform/linux-POWERPC64.mk	2012-06-08 09:44:39.776520838 +0100
@@ -30,7 +30,6 @@
 #please make generic modifications to unxgcc.mk or linux.mk
 gb_CPUDEFS := -D$(CPUNAME)
 gb_CXXFLAGS += -mminimal-toc
-gb_CFLAGS += -fsigned-char
 
 include $(GBUILDDIR)/platform/linux-POWERPC.mk
 
diff -ru libreoffice-3.4.5.2/solenv/gbuild/platform/linux-POWERPC.mk libreoffice-3.4.5.2/solenv/gbuild/platform/linux-POWERPC.mk
--- libreoffice-3.4.5.2/solenv/gbuild/platform/linux-POWERPC.mk	2012-06-08 09:43:20.530668539 +0100
+++ libreoffice-3.4.5.2/solenv/gbuild/platform/linux-POWERPC.mk	2012-06-08 09:44:43.268558424 +0100
@@ -31,8 +31,6 @@
 gb_CPUDEFS += -DPOWERPC -DPPC
 gb_Library_DLLPOSTFIX := lp
 gb_COMPILERDEFAULTOPTFLAGS := -O2
-gb_CXXFLAGS += -fsigned-char
-gb_CFLAGS += -fsigned-char
 
 include $(GBUILDDIR)/platform/unxgcc.mk
 
diff -ru libreoffice-3.4.5.2/solenv/gbuild/platform/linux-S390.mk libreoffice-3.4.5.2/solenv/gbuild/platform/linux-S390.mk
--- libreoffice-3.4.5.2/solenv/gbuild/platform/linux-S390.mk	2012-06-08 09:43:20.530668539 +0100
+++ libreoffice-3.4.5.2/solenv/gbuild/platform/linux-S390.mk	2012-06-08 09:44:33.246450558 +0100
@@ -31,8 +31,8 @@
 gb_CPUDEFS += -DS390
 gb_Library_DLLPOSTFIX := l3
 gb_COMPILERDEFAULTOPTFLAGS := -O2
-gb_CXXFLAGS += -fsigned-char -fno-omit-frame-pointer
-gb_CFLAGS += -fsigned-char -fno-omit-frame-pointer
+gb_CXXFLAGS += -fno-omit-frame-pointer
+gb_CFLAGS += -fno-omit-frame-pointer
 
 include $(GBUILDDIR)/platform/linux.mk
 
diff -ru libreoffice-3.4.5.2/solenv/inc/unxlngs390.mk libreoffice-3.4.5.2/solenv/inc/unxlngs390.mk
--- libreoffice-3.4.5.2/solenv/inc/unxlngs390.mk	2012-06-08 09:43:20.741670807 +0100
+++ libreoffice-3.4.5.2/solenv/inc/unxlngs390.mk	2012-06-08 09:44:52.421656955 +0100
@@ -30,7 +30,5 @@
 PICSWITCH:=-fPIC
 .INCLUDE : unxlng.mk
 CDEFS+=-DS390
-CFLAGS+=-fsigned-char -fno-omit-frame-pointer
-CFLAGSCC+=-fsigned-char
-CFLAGSCXX+=-fsigned-char
+CFLAGS+=-fno-omit-frame-pointer
 DLLPOSTFIX=l3