I'm trying to include a C++ Swift Package into an iOS app.
I'm completely new to xcode and I'm having a lot of trouble making my project build.
My code relies on c++14 features, and I depend on pthreads, security framework and some static libraries that I have already built (openssl).
This is my Package.swift:
// swift-tools-version:5.1
// The swift-tools-version declares the minimum version of Swift required to build this package.
import PackageDescription
let package = Package(
name: "MyLibrary",
products: [
// Products define the executables and libraries produced by a package, and make them visible to other packages.
.library(
name: "MyLibrary",
targets: ["MyLibrary"]),
],
dependencies: [],
targets: [
// Targets are the basic building blocks of a package. A target can define a module or a test suite.
// Targets can depend on other targets in this package, and on products in packages which this package depends on.
.target(
name: "MyLibrary",
dependencies: [],
path: "Sources/MyLibrary",
cxxSettings: [
.headerSearchPath("Dependencies/include/")
],
linkerSettings: [
.linkedFramework("Security"),
.linkedLibrary("pthread"),
.linkedLibrary("/Users/matteo/Documents/Workspace/C++/MyLibrary/Sources/MyLibrary/Dependencies/lib/libcrypto.a"),
.linkedLibrary("/Users/matteo/Documents/Workspace/C++/MyLibrary/Sources/MyLibrary/Dependencies/lib/libssl.a"),
]),
],
cxxLanguageStandard: CXXLanguageStandard.cxx14
)The real problem begins when I try to build it.
I get hundreds of error like:
In file included from /Users/matteo/Documents/Workspace/C++/MyLibrary/Sources/MyLibrary/utils/SessionService.cpp:6:
In file included from /Users/matteo/Documents/Workspace/C++/MyLibrary/Sources/MyLibrary/include/protocol/utils/HttpClient.h:9:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/map:480:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__tree:73:35: error: expected ';' at end of declaration
__tree_is_left_child(_NodePtr __x) _NOEXCEPT
^
error: C++ requires a type specifier for all declarations
__tree_is_left_child(_NodePtr __x) _NOEXCEPT
^
note: expanded from macro '_NOEXCEPT'
# define _NOEXCEPT noexcept
^or
In file included from /Users/matteo/Documents/Workspace/C++/MyLibrary/Sources/MyLibrary/protocol/data/LPrefixedString.cpp:8:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/codecvt:59:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__locale:18:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/mutex:191:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__mutex_base:15:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/chrono:932:67: error: expected ';' at end of declaration list
_LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep zero() _NOEXCEPT {return _Rep(0);}I have no idea the reason and if I messed up anything in the Package.swift
I followed the documentation at Target - Swift Package Manager | Apple Developer Documentation
Thanks
I'm still not sure about the reason of the issue, but I discovered that you can't include binaries in a Swift Package.
This is the correct Package.swift:
// swift-tools-version:5.1
// The swift-tools-version declares the minimum version of Swift required to build this package.
import PackageDescription
let package = Package(
name: "MyLibrary",
products: [
// Products define the executables and libraries produced by a package, and make them visible to other packages.
.library(
name: "MyLibrary",
targets: ["MyLibrary"]),
],
dependencies: [],
targets: [
// Targets are the basic building blocks of a package. A target can define a module or a test suite.
// Targets can depend on other targets in this package, and on products in packages which this package depends on.
.target(
name: "MyLibrary",
dependencies: [],
path: "Sources/MyLibrary",
linkerSettings: [
.linkedFramework("Security"),
.linkedLibrary("pthread"),
.linkedLibrary("crypto"),
.linkedLibrary("ssl")
]),
],
cxxLanguageStandard: CXXLanguageStandard.cxx14
)I then placed the binaries in a directory and added the directory to the 'Library search paths' in Project->Build Settings