[bug #712] GNU make can't handle spaces in pathnames

[Jian]

Follow-up Comment #12, bug #712 (project make):

What's a pity the bug/limitation has lasted more than 10 years! I'd like to
share my workaround here.

1. Replace all space by "+" before calling make functions and restore before
the real procssing logic, e.g.
------------
SRC_NOSP=AA+Mgr/cpp1.cpp AA+Mgr/cpp2.cpp
$(info total $(words $(SRC_NOSP)) source files!)

OBJ_NOSP=$(patsubst %.cpp,$(ObjDir)/%.o,$(SRC_NOSP))
SRC=$(subst +, ,$(SRC_NOSP))
OBJ=$(subst +, ,$(OBJ_NOSP))

all: $(OBJ)
    ...
------------

2. As shell supports space by quote or escape, you can choose to use shell
commands. And if necessary you can write your own script to handle words.
e.g. 
Don't use:
 File=AA Mgr/cpp1.cpp
 SrcDir=$(dir $(File))
insteads,
 SrcDir=$(shell dirname '$(File)')

3. use quotes when you call shell
e.g. 
------------
Src=AA Mgr/cpp1.cpp
%.o: %.cpp
   c++ '$<' -o '$@'
------------


However, I wonder why supporting space breaking the compatibility if space is
escaped by ''? Was '' used as common char on old system? 

And how about the tradeoff that making new flag/switch to keep compatibility?

I'm looking forwards to the fix of this bug.

Jian

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