[CMake] multi-line definitions

[George Neill]

Yuri

>> On Tue, Sep 23, 2008 at 1:54 PM, Emmanuel Blot <eblotml at free.fr> wrote:
>> >> The only way would be something like this:
>> >>
>> >> set(a "-mcpu=arm7tdmi -std=gnu99 -fgnu89-inline -finline-functions")
>> >> set(a "${a} -ffunction-sections -fdata-sections ")
>> >> set(a "${a} -fno-strict-aliasing -mno-thumb -Os -fomit-frame-pointer")
>>
>> I use a list.
>>
>> SET(MY_C_FLAGS
>>  -O3
>>  -m32
>>  -DNDEBUG
>>  -D_LARGEFILE_SOURCE
>>  -D_FILE_OFFSET_BITS=64
>>  -s # strip debug symbols
>> )
>>
>> Then turn it into a string later, I haven't ran into any issues doing
>> it this way yet.
>
> But this turns into list (in terms of cmake) that is string with
> semicolon-separated elements (not space-separated).
> And this may be a problem in some cases, and initial compile flags seems to
> be the case.

I have a macro which iterates over the "list" (semi-colon separated)
and turns it in to a "string" (space separated).   I haven't had any
troubles.  It is possible you might run into troubles if you need to
have quotes or something like that in your compile options, but I
haven't run in to that case yet.   Hope that makes sense.

Later,
George.