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Document how to build universal apps for macOS

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Albrecht Schlosser
2021-04-29 18:32:19 +02:00
parent 9df287b415
commit 4ba92a99bb
1 changed files with 14 additions and 6 deletions
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README.CMake.txt
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@@ -92,6 +92,12 @@ CMAKE_INSTALL_PREFIX
Where everything will go on install. Defaults are /usr/local for Unix Where everything will go on install. Defaults are /usr/local for Unix
and C:\Program Files\FLTK for Windows. and C:\Program Files\FLTK for Windows.
CMAKE_OSX_ARCHITECTURES (macOS only, ignored on other platforms)
Set this to either "arm64", "x86_64", or a list of both "arm64;x86_64".
The latter will build "universal apps" on macOS, whereas the former
will either build Intel (x86_64) or Apple Silicon aka M1 (arm64) apps.
The default is to build for the host processor architecture.
The following are the FLTK specific options. Platform specific options The following are the FLTK specific options. Platform specific options
are ignored on other platforms. are ignored on other platforms.
@@ -134,9 +140,9 @@ OPTION_USE_THREADS - default ON
OPTION_LARGE_FILE - default ON OPTION_LARGE_FILE - default ON
Enables large file (>2G) support. Enables large file (>2G) support.
OPTION_USE_SYSTEM_LIBJPEG - default ON OPTION_USE_SYSTEM_LIBJPEG - default ON (macOS: OFF)
OPTION_USE_SYSTEM_ZLIB - default ON OPTION_USE_SYSTEM_LIBPNG - default ON (macOS: OFF)
OPTION_USE_SYSTEM_LIBPNG - default ON OPTION_USE_SYSTEM_ZLIB - default ON
FLTK has built in jpeg, zlib, and png libraries. These options let you FLTK has built in jpeg, zlib, and png libraries. These options let you
use system libraries instead, unless CMake can't find them. If you set use system libraries instead, unless CMake can't find them. If you set
any of these options to OFF, then the built in library will be used. any of these options to OFF, then the built in library will be used.
@@ -526,9 +532,10 @@ The built-in libraries (if built):
------------------------ ------------------------
CMake has a command named fltk_wrap_ui which helps deal with fluid *.fl CMake has a command named fltk_wrap_ui which helps deal with fluid *.fl
files. Unfortunately it is broken in CMake 3.4.x. You can however use files. Unfortunately it is broken in CMake 3.4.x but it seems to work in
add_custom_command to achieve the same result. 3.5 and later CMake versions. You can however use add_custom_command()
This is a more basic approach and should work for all CMake versions. to achieve the same result. This is a more basic approach and should
work for all CMake versions.
Here is a sample CMakeLists.txt which compiles the CubeView example from Here is a sample CMakeLists.txt which compiles the CubeView example from
a directory you've copied the test/Cube* files to. a directory you've copied the test/Cube* files to.
@@ -584,3 +591,4 @@ Jan 31 2016 - msurette: custom command instead of fltk_wrap_ui
Nov 01 2016 - AlbrechtS: remove deprecated FLTK_USE_FILE, add MinGW build Nov 01 2016 - AlbrechtS: remove deprecated FLTK_USE_FILE, add MinGW build
Jul 05 2017 - matt: added instructions for MacOS and Xcode Jul 05 2017 - matt: added instructions for MacOS and Xcode
Dec 29 2018 - AlbrechtS: add documentation option descriptions Dec 29 2018 - AlbrechtS: add documentation option descriptions
Apr 29 2021 - AlbrechtS: document macOS "universal apps" build setup