add support for catalyst target

[sbarex]

Please add support for catalyst target.

I think the arch is x86_64h, target is x86_64-apple-ios14.3-macabi.
But I do not know which host... x86_64?

[sbarex]

Right now I am able to compile libjpeg:

cd jpeg-9d
mkdir catalyst
cd catalyst
 
CXX="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ --target=x86_64-apple-ios14.3-macabi" CC="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang --target=x86_64-apple-ios14.3-macabi" CFLAGS="-O3 -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk -iframework /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/iOSSupport/System/Library/Frameworks" LDFLAGS="-target x86_64-apple-ios14.3-macabi -L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/iOSSupport/usr/lib -iframework /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/iOSSupport/System/Library/Frameworks" CXXFLAGS="$CFLAGS -Wno-deprecated-register" ../configure --prefix=`pwd` --disable-dependency-tracking --enable-static=yes --enable-shared=no

make install

But compiling libtiff doesn't quite work for now:

cd tiff-4.2.0
mkdir catalyst
cd catalyst

CXX="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ --target=x86_64-apple-ios14.3-macabi" CC="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang --target=x86_64-apple-ios14.3-macabi" CFLAGS="-O3 -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk -iframework /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/iOSSupport/System/Library/Frameworks" LDFLAGS="-target x86_64-apple-ios14.3-macabi  -L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/iOSSupport/usr/lib -iframework /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/iOSSupport/System/Library/Frameworks" CXXFLAGS="$CFLAGS -Wno-deprecated-register" ../configure --prefix=`pwd` --disable-dependency-tracking --enable-static=yes --enable-shared=yes --with-zlib-lib-dir=/usr/lib/libz.1.dylib --with-jpeg-include-dir=../../jpeg-9d/catalyst/include --with-jpeg-lib-dir=../../jpeg-9d/catalyst/lib

make install

The static library imported into Xcode fails with error: In libtiff.a(tif_close.o), building for Mac Catalyst, but linking in object file built for iOS Simulator, for architecture x86_64.

I believe that some libraries (libz?) compiled for mac and not for catalyst are linked during compilation.

The dylib library is working, but remember to change the upload path:

install_name_tool -id '@rpath/libtiff.5.dylib' libtiff.5.dylib