diff --git a/Makefile.src.in b/Makefile.src.in
--- a/Makefile.src.in
+++ b/Makefile.src.in
@@ -55,7 +55,7 @@ ENDIAN_TARGETS := endian_target.h $(ENDI
 # For more information, please check:
 #  http://maillist.openttd.org/pipermail/devs/2007-April/000284.html
 #  http://maillist.openttd.org/pipermail/devs/2007-February/000248.html
-GCC295_FIX=sed -r 's/^(\t*)(.*)( const )([A-Za-z0-9_ ]+(\[.*\]){2,})(( = \{)|(;))(.*)$$/\1\2 \4\6\8\9/g'
+GCC295_FIX=sed -r 's~^(\t*)(.*)( const )([A-Za-z0-9_ ]+(\[.*\]){2,})(( = \{)|(;))(.*)$$~\1\2 \4\6\8\9~g'
 # This 'sed' removes the 3rd '4' in the # lines of the -E output of
 #  gcc 2.95.3 and lower, as it should indicate that it is a C-linkage, but the
 #  compiler can't handle that information (just don't ask). So we remove it
@@ -63,7 +63,7 @@ GCC295_FIX=sed -r 's/^(\t*)(.*)( const )
 # Furthermore gcc 2.95 has some trouble with protected and private when
 #  accessing the protected/private stuff of the enclosing class (or the
 #  super class of the enclosing class).
-GCC295_FIX_2=sed -e 's|\(^\# [0-9][0-9]* "[^"]*"[ 0-9]*\) 4$$|\1|g;s|private:|public:|g;s|protected:|public:|g'
+GCC295_FIX_2=sed -e 's~\(^\# [0-9][0-9]* "[^"]*"[ 0-9]*\) 4$$~\1~g;s~private:~public:~g;s~protected:~public:~g'
 
 # Check if we want to show what we are doing
 ifdef VERBOSE
@@ -96,7 +96,7 @@ MODIFIED := $(shell echo "$(VERSIONS)" |
 ifdef REVISION
 # Use specified revision (which should be of the form "r000").
 REV := $(REVISION)
-REV_NR := $(shell echo $(REVISION) | sed "s#[^0-9]##g")
+REV_NR := $(shell echo $(REVISION) | sed "s~[^0-9]~~g")
 else
 # Use autodetected revisions
 REV      := $(shell echo "$(VERSIONS)" | cut -f 1 -d'	')
@@ -141,15 +141,15 @@ endif
 
 $(OBJS_C:%.o=%.d): %.d: $(SRC_DIR)/%.c $(FILE_DEP)
 	$(E) '$(STAGE) DEP $(<:$(SRC_DIR)/%.c=%.c)'
-	$(Q)$(CC_HOST) $(CC_CFLAGS) $(CFLAGS) -MM $< | sed 's#^$(@F:%.d=%.o):#$@ $(@:%.d=%.o):#' > $@
+	$(Q)$(CC_HOST) $(CC_CFLAGS) $(CFLAGS) -MM $< | sed 's~^$(@F:%.d=%.o):~$@ $(@:%.d=%.o):~' > $@
 
 $(OBJS_CPP:%.o=%.d): %.d: $(SRC_DIR)/%.cpp $(FILE_DEP)
 	$(E) '$(STAGE) DEP $(<:$(SRC_DIR)/%.cpp=%.cpp)'
-	$(Q)$(CXX_HOST) $(CFLAGS) -MM $< | sed 's#^$(@F:%.d=%.o):#$@ $(@:%.d=%.o):#' > $@
+	$(Q)$(CXX_HOST) $(CFLAGS) -MM $< | sed 's~^$(@F:%.d=%.o):~$@ $(@:%.d=%.o):~' > $@
 
 $(OBJS_MM:%.o=%.d): %.d: $(SRC_DIR)/%.mm $(FILE_DEP)
 	$(E) '$(STAGE) DEP $(<:$(SRC_DIR)/%.mm=%.mm)'
-	$(Q)$(CC_HOST) $(CFLAGS) -MM $< | sed 's#^$(@F:%.d=%.o):#$@ $(@:%.d=%.o):#' > $@
+	$(Q)$(CC_HOST) $(CFLAGS) -MM $< | sed 's~^$(@F:%.d=%.o):~$@ $(@:%.d=%.o):~' > $@
 
 $(OBJS_RC:%.o=%.d): %.d: $(SRC_DIR)/%.rc $(FILE_DEP)
 	$(E) '$(STAGE) DEP $(<:$(SRC_DIR)/%.mm=%.mm)'
@@ -180,7 +180,7 @@ endif
 
 # Convert x:/... paths to /x/... for mingw
 ifeq ($(OS), MINGW)
-	@cat Makefile.dep.tmp | sed 's#\([a-zA-Z]\):\/#\/\1\/#g' > Makefile.dep.tmp.mingw
+	@cat Makefile.dep.tmp | sed 's~\([a-zA-Z]\):\/~\/\1\/~g' > Makefile.dep.tmp.mingw
 	@cp Makefile.dep.tmp.mingw Makefile.dep.tmp
 	@rm -f Makefile.dep.tmp.mingw
 endif
@@ -209,7 +209,7 @@ endif
 	{                                   \
 		print $$0                         \
 	}                                   \
-	' < Makefile.dep.tmp | sed 's#  *# #g;s# $$##' | $(SORT) > Makefile.dep
+	' < Makefile.dep.tmp | sed 's~  *~ ~g;s~ $$~~' | $(SORT) > Makefile.dep
 
 	$(Q)rm -f Makefile.dep.tmp Makefile.dep.tmp.bak
 
@@ -274,10 +274,10 @@ endian_target.h: $(ENDIAN_CHECK) $(CONFI
 # Revision files
 
 $(SRC_DIR)/rev.cpp: $(CONFIG_CACHE_VERSION) $(SRC_DIR)/rev.cpp.in
-	$(Q)cat $(SRC_DIR)/rev.cpp.in      | sed "s#@@REVISION@@#$(REV_NR)#g;s#@@VERSION@@#$(REV)#g;s#@@MODIFIED@@#$(MODIFIED)#g;s#@@DATE@@#`date +%d.%m.%y`#g" > $(SRC_DIR)/rev.cpp
+	$(Q)cat $(SRC_DIR)/rev.cpp.in      | sed "s~@@REVISION@@~$(REV_NR)~g;s~@@VERSION@@~$(REV)~g;s~@@MODIFIED@@~$(MODIFIED)~g;s~@@DATE@@~`date +%d.%m.%y`~g" > $(SRC_DIR)/rev.cpp
 
 $(SRC_DIR)/ottdres.rc: $(CONFIG_CACHE_VERSION) $(SRC_DIR)/ottdres.rc.in
-	$(Q)cat $(SRC_DIR)/ottdres.rc.in | sed "s#@@REVISION@@#$(REV_NR)#g;s#@@VERSION@@#$(REV)#g;s#@@DATE@@#`date +%d.%m.%y`#g" > $(SRC_DIR)/ottdres.rc
+	$(Q)cat $(SRC_DIR)/ottdres.rc.in | sed "s~@@REVISION@@~$(REV_NR)~g;s~@@VERSION@@~$(REV)~g;s~@@DATE@@~`date +%d.%m.%y`~g" > $(SRC_DIR)/ottdres.rc
 
 FORCE: