CMake quoting problem

I am trying to run sed from CMake. The problem is that CMake really messes up the expressions passed to sed. Here's a snippet from the CMakeLists.txt file:

${SED_TOOL} -e "'1 s@.*@\#include \"config.hpp\"\\nnamespace LANG_NAMESPACE {\\nnamespace lexyacc {\\n\\n&@'" -e "'\$ s@.*@&\\n}}\\n@'"

And here's what CMake turns it into:

/bin/sed -e '1\ s@.*@#include\ "config.hpp"\nnamespace\ LANG_NAMESPACE\ {\nnamespace\ lexyacc\ {\n\n&@' -e '$\ s@.*@&\n}}\n@'

How should I fix this? And is there any good reference on how CMake's quoting works?

EDIT: here's an example开发者_如何学编程:

http://pastebin.com/G9NRfrp7

http://pastebin.com/y9776Lt9

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Why do you think you need the outer-most surrounding dbl-quote chars. Cmake is almost certainly passing the sed cmd to a shell, which then executes it. Putting the sed strings in dbl-quotes means some extra evaluation will be performed. Eliminate dbl-quotes, unless you need to have a variable evaluated, and then use something like

sed -e 's/xxx/yyy/;s/'"${var1}/${var2}"'/;s/www/zzz/'

I hope this helps.