Missing documentation how to build without RTTI

[rizsotto]

The wiki/FAQ mentions that it's possible to build the library without RTTI. But the wiki/Install page does not give clear guidance how to achieve that.

I've been trying to these flags without success:

• -DFRUIT_ADDITIONAL_CXX_FLAGS:STRING="-fno-exceptions -fno-rtti" I saw this in the main CMakeList.txt, but looks like it's not used when the compiler is checked.
• -DFRUIT_COMPILE_FLAGS:STRING="-fno-exceptions -fno-rtti" I've found this in configuration/CMakeLists.txt where it assigns to CMAKE_REQUIRED_FLAGS before runs the compiler checks.

What would be the right way to disable it?

[poletti-marco]

-DCMAKE_CXX_FLAGS=... should be the flag you're looking for. Please let me know if it works but don't close this issue so I have a reminder to document it.

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On Fri, 17 Apr 2020, 08:05 László Nagy, ***@***.***> wrote: The wiki/FAQ mentions that it's possible to build the library without RTTI. But the wiki/Install page does not give clear guidance how to achieve that. I've been trying to these flags without success: - -DFRUIT_ADDITIONAL_CXX_FLAGS:STRING="-fno-exceptions -fno-rtti" I saw this in the main CMakeList.txt, but looks like it's not used when the compiler is checked. - -DFRUIT_COMPILE_FLAGS:STRING="-fno-exceptions -fno-rtti" I've found this in configuration/CMakeLists.txt where it assigns to CMAKE_REQUIRED_FLAGS before runs the compiler checks. What would be the right way to disable it? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#117>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AALZ4FZSEKMONJT4BKSSUELRNBV3HANCNFSM4MK2FS6A> .

[rizsotto]

Thanks, it made it. But I could do only the -lno-rtti passed. If I'm specifying multiple flags, it starts to separate it by semicolon. Do you know how to pass multiple flags?

-DCMAKE_CXX_FLAGS:STRING=-fno-exception -fno-rtti makes the compiler call as c++ -fno-exception; -fno-rtti ..... Keep it together in a quote (like -DCMAKE_CXX_FLAGS:STRING="-fno-exception -fno-rtti") is also failing with c++ ;-no-exception;-fno-rtti ....

I'm using ExternalProject_Add and the CMAKE_CACHE_ARGS is the section expects the variables tagged with STRING (or one of these types).

[poletti-marco]

I'm not familiar with ExternalProject_Add, I'm afraid I don't know. If you can get it to work great (and I'm happy to accept any PRs in that direction) but note that this is not one of the officially supported ways to build Fruit (see the install page of the wiki).

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On Fri, 17 Apr 2020, 16:23 László Nagy, ***@***.***> wrote: Thanks, it made it. But I could do only the -lno-rtti passed. If I'm specifying multiple flags, it starts to separate it by semicolon. Do you know how to pass multiple flags? -DCMAKE_CXX_FLAGS:STRING=-fno-exception -fno-rtti makes the compiler call as c++ -fno-exception; -fno-rtti ..... Keep it together in a quote (like -DCMAKE_CXX_FLAGS:STRING="-fno-exception -fno-rtti") is also failing with c++ ;-no-exception;-fno-rtti .... I'm using ExternalProject_Add <https://cmake.org/cmake/help/latest/module/ExternalProject.html> and the CMAKE_CACHE_ARGS is the section expects the variables tagged with STRING (or one of these <https://cmake.org/cmake/help/v3.0/prop_cache/TYPE.html> types). — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#117 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AALZ4F7PTFHEWZS2PYQYURDRNDQFRANCNFSM4MK2FS6A> .