[CMake] Double quotes being removed Windows removing compiler flags

[Andreas Mohr]

Hi,

On Wed, Jul 11, 2012 at 12:00:08PM -0400, cmake-request at cmake.org wrote:
> Date: Wed, 11 Jul 2012 17:09:01 +0200
> From: Fran?ois Best <francois.best at eiosis.com>
> 
> What I'm looking for is a way to achieve the following:
> 
> In the project file:
> AdditionalOptions="/foo:&quot;bar&quot;"
> 
> Interpreted in the command-line as
> /foo:"bar"
> 
> We both tried every combination of escaping quotes, but without any success.

My vcproj2cmake scripts have the following semi-related
and possibly helpful explanations:

  # WARNING NOTE: the previous implementation called set_target_properties()
  # with a strung-together list of properties, as an optimization.
  # However since certain input property string payload consisted of semicolons
  # (e.g. in the case of "&quot;"), this went completely haywire
  # with contents partially split off at semicolon borders.
  # IOW, definitely make sure to set each property precisely separately.
  # Well, that's not sufficient! The remaining problem was that the property
  # variables SHOULD NOT BE QUOTED, to enable passing of the content as a list,
  # thereby implicitly properly passing the original ';' content right to
  # the generated .vcproj, in fully correct form!
  # Perhaps the previous set_target_properties() code was actually doable after all... (TODO test?)
  if(_vs_scc_projectname)
    set_property(TARGET ${_target} PROPERTY VS_SCC_PROJECTNAME ${_vs_scc_projectname})
    if(_vs_scc_localpath)
      #if("${_vs_scc_localpath}" STREQUAL ".")
      #      set(_vs_scc_localpath "SAK")
      #endif("${_vs_scc_localpath}" STREQUAL ".")
      set_property(TARGET ${_target} PROPERTY VS_SCC_LOCALPATH ${_vs_scc_localpath})
    endif(_vs_scc_localpath)
    if(_vs_scc_provider)
      set_property(TARGET ${_target} PROPERTY VS_SCC_PROVIDER ${_vs_scc_provider})
    endif(_vs_scc_provider)
    if(_vs_scc_auxpath)
      set_property(TARGET ${_target} PROPERTY VS_SCC_AUXPATH ${_vs_scc_auxpath})
    endif(_vs_scc_auxpath)
  endif(_vs_scc_projectname)
endfunction(v2c_target_set_properties_vs_scc _target _vs_scc_projectname _vs_scc_localpath _vs_scc_provider _vs_scc_auxpath)


While this may not be helpful enough (probably only applies
to strings containing ';' as implicitly used by CMake string variables) -
maybe it would be successful to add an explicit fully separate helper variable
for the quotes, to avoid any rogue de-escaping?

I.e. use something like:
set(escaped_quotes_helper "\"") # or perhaps need to use "\\"" or "\\\""?

set(quoted_string ${non_quote_string_part1}${escaped_quotes_helper}${non_quote_string_part2}${escaped_quotes_helper})
Well, this would end up as a list variable, thus perhaps use that instead:
set(quoted_string "${non_quote_string_part1}${escaped_quotes_helper}${non_quote_string_part2}${escaped_quotes_helper}")

Or another trick might be to mark all quote positions within the string
with a different marker char and then use some regex replace on that string
to replace those with quotes.
Perhaps the result string then ends up more precise (read: successful)
than the previous fruitless attempts.

HTH,

Andreas Mohr