Re: [CMake] Include_directories looks for Boost twice / Problem with if statement
Hi Jakub,
On Fri, Dec 7, 2012 at 4:46 PM, Jakub Zakrzewski jzakrzew...@e2e.ch wrote:
Hi
Did you think about something like this:
ADD_DEFINITIONS (-DBOOST_ALL_NO_LIB)
SET (BOOST_ROOT $ENV{BOOST_ROOT})
SET (Boost_NO_SYSTEM_PATHS ON)
SET (Boost_USE_MULTITHREADED ON)
SET (Boost_USE_STATIC_RUNTIME OFF)
IF (TARGET parent)
FIND_PACKAGE (Boost 1.42.0 REQUIRED COMPONENTS system)
IF (Boost_FOUND)
LINK_DIRECTORIES (${Boost_LIBRARY_DIRS})
INCLUDE_DIRECTORIES (${Boost_INCLUDE_DIRS})
TARGET_LINK_LIBRARIES (parent ${Boost_LIBRARIES})
ENDIF ()
ENDIF (TARGET parent)
How embarrassing...yes, what you suggested of just putting the search
in the IF statement worked. Unfortunately, getting it right made me
realize I had problems elsewhere in my CMakeLists.txt (in particular,
it wasn't conditionally defining the target properly).
In the end, I added:
IF (${PROJECT_NAME} STREQUAL )
PROJECT (child CXX)
ENDIF (${PROJECT_NAME} STREQUAL )
and likewise to the ADD_EXECUTABLE () in all of my CMakeLists.txt. I
don't know if this is the right way to do it, but it seems ok so
far...
Yes, in hindsight, what you suggested was obvious but I was so fixated
on something more complicated; the obvious eluded me! Thank you for
your help!
Ray
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Re: [CMake] Include_directories looks for Boost twice / Problem with if statement
Hi
Did you think about something like this:
ADD_DEFINITIONS (-DBOOST_ALL_NO_LIB)
SET (BOOST_ROOT $ENV{BOOST_ROOT})
SET (Boost_NO_SYSTEM_PATHS ON)
SET (Boost_USE_MULTITHREADED ON)
SET (Boost_USE_STATIC_RUNTIME OFF)
IF (TARGET parent)
FIND_PACKAGE (Boost 1.42.0 REQUIRED COMPONENTS system)
IF (Boost_FOUND)
LINK_DIRECTORIES (${Boost_LIBRARY_DIRS})
INCLUDE_DIRECTORIES (${Boost_INCLUDE_DIRS})
TARGET_LINK_LIBRARIES (parent ${Boost_LIBRARIES})
ENDIF ()
ENDIF (TARGET parent)
-Original Message-
From: cmake-boun...@cmake.org [mailto:cmake-boun...@cmake.org] On Behalf Of
Raymond Wan
Sent: Donnerstag, 6. Dezember 2012 18:45
To: cmake@cmake.org
Subject: [CMake] Include_directories looks for Boost twice / Problem with if
statement
Hi all,
I have two CMakeFile.txt's for a C++ project where one includes the other. In
both cases, I'm searching for Boost.
So, to make this easier, suppose I call one project parent and the other
child such that parent's CMakefile.txt has:
INCLUDE_DIRECTORIES (child)
where child is a subdirectory. Both have:
ADD_DEFINITIONS (-DBOOST_ALL_NO_LIB)
SET (BOOST_ROOT $ENV{BOOST_ROOT})
SET (Boost_NO_SYSTEM_PATHS ON)
SET (Boost_USE_MULTITHREADED ON)
SET (Boost_USE_STATIC_RUNTIME OFF)
FIND_PACKAGE (Boost 1.42.0 REQUIRED COMPONENTS system) IF (Boost_FOUND)
IF (TARGET parent)
LINK_DIRECTORIES (${Boost_LIBRARY_DIRS})
INCLUDE_DIRECTORIES (${Boost_INCLUDE_DIRS})
TARGET_LINK_LIBRARIES (parent ${Boost_LIBRARIES})
ENDIF (TARGET parent)
ENDIF ()
(In the subdirectory child, I check for the target child instead.)
The reason I have to repeat it twice is because both parent and child has a
main (). parent has the one for the entire project; if I want to do unit
testing on child, then I compile in child's build directory using its main.
I hope everything so far is ok. The problem is that when I run the
CMakeFile.txt of parent, it ends up checking for Boost twice.
There's no harm to it and I had left it alone for a while. Then, I thought I
could use an if statement inside child to prevent it from checking again.
Inside, child, none of these seem to work:
IF (NOT DEFINED Boost_FOUND)
IF (NOT Boost_FOUND)
So, while my question is about Boost, I guess it is irrelevant to boost...seems
to be a problem with my understanding of variables and if statements.
Any suggestion on what I'm doing wrong? Or am I going at it wrong and I need
to rethink what I'm doing?
Thank you!
Ray
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[CMake] Include_directories looks for Boost twice / Problem with if statement
Hi all,
I have two CMakeFile.txt's for a C++ project where one includes the
other. In both cases, I'm searching for Boost.
So, to make this easier, suppose I call one project parent and the
other child such that parent's CMakefile.txt has:
INCLUDE_DIRECTORIES (child)
where child is a subdirectory. Both have:
ADD_DEFINITIONS (-DBOOST_ALL_NO_LIB)
SET (BOOST_ROOT $ENV{BOOST_ROOT})
SET (Boost_NO_SYSTEM_PATHS ON)
SET (Boost_USE_MULTITHREADED ON)
SET (Boost_USE_STATIC_RUNTIME OFF)
FIND_PACKAGE (Boost 1.42.0 REQUIRED COMPONENTS system)
IF (Boost_FOUND)
IF (TARGET parent)
LINK_DIRECTORIES (${Boost_LIBRARY_DIRS})
INCLUDE_DIRECTORIES (${Boost_INCLUDE_DIRS})
TARGET_LINK_LIBRARIES (parent ${Boost_LIBRARIES})
ENDIF (TARGET parent)
ENDIF ()
(In the subdirectory child, I check for the target child instead.)
The reason I have to repeat it twice is because both parent and child
has a main (). parent has the one for the entire project; if I want
to do unit testing on child, then I compile in child's build directory
using its main.
I hope everything so far is ok. The problem is that when I run the
CMakeFile.txt of parent, it ends up checking for Boost twice.
There's no harm to it and I had left it alone for a while. Then, I
thought I could use an if statement inside child to prevent it from
checking again. Inside, child, none of these seem to work:
IF (NOT DEFINED Boost_FOUND)
IF (NOT Boost_FOUND)
So, while my question is about Boost, I guess it is irrelevant to
boost...seems to be a problem with my understanding of variables and
if statements.
Any suggestion on what I'm doing wrong? Or am I going at it wrong and
I need to rethink what I'm doing?
Thank you!
Ray
--
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