Vikas Kumar wrote:
Hi
Is there a way that I can change compile flags based on the target I
am building. I have played around with all the cmake command options
given and I am kinda out of ideas. So it seems that the CmakeCache.txt
variables are my only hope. But I do not have enough knowledge nor do
I have the CMake book to help me. (apparently it is out of stock)
As an example of the case that I have, in one directory I have some
source files.
These source files need to be built and linked and archived into
static libraries.
But the catch here is that they all use #ifdef's. Since the code is
supposed to be high-performance oriented, we cannot afford to use
runtime if-then-else checks. Hence compile time checks are done. All
the code is in C.
Now there are only 2 constants that are used in the code, lets call
them DEF_CON_1 and DEF_CON_2.
Let the source files be src1.c and src2.c . Both these source files
use the above constants and compile different functions based on the
constants and are supposed to create two different target static
libraries, libfoo1. a and libfoo2.a .
Now all of this is done under one Project.
I want to do
PROJ(Test)
ADD_LIBRARY(foo1 "STATIC" src1.c src2.c)
ADD_LIBRARY(foo2 "STATIC" src1.c src2.c)
using ADD_DEFINITIONS() sets the defines for all the targets. using
SET_SOURCE_FILES_PROPERTIES() sets the COMPILE_FLAGS for the sources
for whatever targets they are used to build.
SET_TARGET_PROPERTIES() does not work for static libraries, otherwise
I could have used target_EXPORTS instead.
Now is there a way that I can set CMAKE_C_COMPILE_FLAGS type variables
for the same sources pertaining to different targets.
Use SET_TARGET_PROPERTIES to set the COMPILE_FLAGS property.
-Brad
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