Mercurial > blahgd > experimental
changeset 1028:7b6e611021c8
cmake: add a way to force 64-bit build
This is useful on OSes that support 64-bit binaries but default to 32-bit.
To force 64-bits, pass FORCE_64_BIT_BUILD to cmake. E.g.,
$ cmake . -DFORCE_64_BIT_BUILD=1
Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
| author | Josef 'Jeff' Sipek <jeffpc@josefsipek.net> |
|---|---|
| date | Sat, 18 Jul 2020 11:08:22 -0400 |
| parents | 7bedc9c2eca6 |
| children | f3f52485128d |
| files | CMakeLists.txt cmake/64-bit.cmake |
| diffstat | 2 files changed, 33 insertions(+), 0 deletions(-) [+] |
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--- a/CMakeLists.txt Sat Jul 18 11:02:05 2020 -0400 +++ b/CMakeLists.txt Sat Jul 18 11:08:22 2020 -0400 @@ -25,6 +25,7 @@ enable_testing() +include(cmake/64-bit.cmake) include(config.cmake) add_definitions(
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cmake/64-bit.cmake Sat Jul 18 11:08:22 2020 -0400 @@ -0,0 +1,32 @@ +# +# Copyright (c) 2020 Josef 'Jeff' Sipek <jeffpc@josefsipek.net> +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to deal +# in the Software without restriction, including without limitation the rights +# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +# copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +# SOFTWARE. +# + +if(FORCE_64_BIT_BUILD) + message("-- Forcing 64-bit build") + set(CMAKE_EXE_LINKER_FLAGS "-m64") + set(CMAKE_SHARED_LINKER_FLAGS "-m64") + add_compile_options(-m64) + + # necessary for check_type_size, etc. + set(CMAKE_REQUIRED_FLAGS "-m64") + set(CMAKE_REQUIRED_LINK_OPTIONS "-m64") +endif()