diff options
Diffstat (limited to 'png')
| -rw-r--r-- | png/CMakeLists.txt | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/png/CMakeLists.txt b/png/CMakeLists.txt index 117d699ee..3994dfd7b 100644 --- a/png/CMakeLists.txt +++ b/png/CMakeLists.txt @@ -1,7 +1,7 @@ # # PNG library CMake configuration for the Fast Light Toolkit (FLTK). # -# Copyright 1998-2021 by Bill Spitzak and others. +# Copyright 1998-2022 by Bill Spitzak and others. # # This library is free software. Distribution and use rights are outlined in # the file "COPYING" which should have been included with this file. If this @@ -31,14 +31,34 @@ set(PNG_SRCS pngwrite.c pngwtran.c pngwutil.c - - # build on ARM (Apple M1 systems) - arm/arm_init.c - arm/filter_neon_intrinsics.c - arm/palette_neon_intrinsics.c ) ####################################################################### +# Build some files on ARM (e.g. Apple M1 systems) +####################################################################### + +# We can only determine the target architecture if it is set +# in CMAKE_OSX_ARCHITECTURES, otherwise we *assume* it is true and +# compile these files even if this results in some warnings. +# This includes all non-macOS platforms. + +if (CMAKE_OSX_ARCHITECTURES) + string(REGEX MATCH "arm64" is_arm "${CMAKE_OSX_ARCHITECTURES}") +else () + set (is_arm TRUE) +endif () + +if (is_arm) + LIST (APPEND PNG_SRCS + arm/arm_init.c + arm/filter_neon_intrinsics.c + arm/palette_neon_intrinsics.c + ) +endif () + +unset (is_arm) + +####################################################################### # Build the static library ####################################################################### |