Hello SPM community,
I've been playing around with a Swift wrapper for libvips. After some pandemic induced break I've recently opened the project again and found that it no longer compiles. I get an error "could not find .pc file". Here is the setup:
- macOS 10.15.7
- swift
swift --version
Apple Swift version 5.3.1 (swiftlang-1200.0.41 clang-1200.0.32.8)
Target: x86_64-apple-darwin19.6.0
brew install vipsvips: stable 8.10.2 (bottled)
$ cat /usr/local/lib/pkgconfig/vips.pc
prefix=/usr/local/Cellar/vips/8.10.2_1
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
Name: vips
Description: Image processing library
Version: 8.10.2
Requires.private: glib-2.0 gmodule-2.0 gobject-2.0 gio-2.0 expat libgsf-1 fftw3 MagickCore orc-0.4 lcms2 OpenEXR libheif poppler-glib cairo librsvg-2.0 cairo zlib openslide matio cfitsio libwebp libwebpmux libwebpdemux pangoft2 libtiff-4 spng libpng imagequant libjpeg libexif
Requires: gobject-2.0
Libs: -L${libdir} -lvips
Libs.private:
Cflags: -I${includedir}
// Package.swift
// swift-tools-version:5.3
// The swift-tools-version declares the minimum version of Swift required to build this package.
import PackageDescription
let package = Package(
name: "swift-vips",
products: [
// Products define the executables and libraries a package produces, and make them visible to other packages.
.library(
name: "swift-vips",
targets: ["swift-vips"])
],
dependencies: [
// Dependencies declare other packages that this package depends on.
// .package(url: /* package url */, from: "1.0.0"),
],
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 this package depends on.
.target(
name: "swift-vips",
dependencies: [ "Cvips" ]),
.systemLibrary(name: "Cvips",
pkgConfig: "vips"),
.testTarget(
name: "swift-vipsTests",
dependencies: ["swift-vips"]),
]
)
# Sources/Cvips/module.modulemap:
module Cvips [system] {
header "shim.h"
link "vips"
export *
}
# Sources/Cvips/shim.h:
#include <vips/vips.h>
When running swift build I get the aforementioned error.
$ swift build --target swift-vips
'Cvips' vips.pc: warning: couldn't find pc file
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
^
/Users/tobias/Developing/test/swift-vips/Sources/Cvips/shim.h:1:10: note: in file included from /Users/tobias/Developing/test/swift-vips/Sources/Cvips/shim.h:1:
#include <vips/vips.h>
^
/usr/local/include/vips/vips.h:87:10: error: 'glib.h' file not found
#include <glib.h>
^
/Users/tobias/Developing/test/swift-vips/Sources/swift-vips/swift_vips.swift:1:8: error: could not build Objective-C module 'Cvips'
import Cvips
^
tobias@tobias-mbp ~/D/t/swift-vips> swift build --target swift-vips --verbose
/usr/bin/xcrun --sdk macosx --show-sdk-platform-path
/usr/bin/xcrun --sdk macosx --find xctest
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -print-target-info
xcrun --sdk macosx --show-sdk-platform-path
xcrun vtool -show-build /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks/XCTest.framework/XCTest
xcrun --sdk iphoneos --show-sdk-platform-path
xcrun vtool -show-build /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks/XCTest.framework/XCTest
xcrun --sdk appletvos --show-sdk-platform-path
xcrun vtool -show-build /Applications/Xcode.app/Contents/Developer/Platforms/AppleTVOS.platform/Developer/Library/Frameworks/XCTest.framework/XCTest
xcrun --sdk watchos --show-sdk-platform-path
xcrun vtool -show-build /Applications/Xcode.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks/XCTest.framework/XCTest
pkg-config --variable pc_path pkg-config
'Cvips' vips.pc: warning: couldn't find pc file
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name swift_vips -incremental -emit-dependencies -emit-module -emit-module-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.swiftmodule -output-file-map /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.build/output-file-map.json -parse-as-library -c /Users/tobias/Developing/test/swift-vips/Sources/swift-vips/swift_vips.swift -I /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug -target x86_64-apple-macosx10.10 -swift-version 5 -enable-batch-mode -index-store-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/index/store -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.0.sdk -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -L /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -Onone -enable-testing -g -j8 -DSWIFT_PACKAGE -DDEBUG -Xcc -fmodule-map-file=/Users/tobias/Developing/test/swift-vips/Sources/Cvips/module.modulemap -module-cache-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/ModuleCache -parseable-output -emit-objc-header -emit-objc-header-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.build/swift-vips-Swift.h -color-diagnostics
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -primary-file /Users/tobias/Developing/test/swift-vips/Sources/swift-vips/swift_vips.swift -emit-module-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.build/swift_vips~partial.swiftmodule -emit-module-doc-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.build/swift_vips~partial.swiftdoc -emit-module-source-info-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.build/swift_vips~partial.swiftsourceinfo -emit-dependencies-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.build/swift_vips.d -emit-reference-dependencies-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.build/swift_vips.swiftdeps -target x86_64-apple-macosx10.10 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.0.sdk -I /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -color-diagnostics -enable-testing -g -module-cache-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/ModuleCache -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -enable-anonymous-context-mangled-names -Xcc -fmodule-map-file=/Users/tobias/Developing/test/swift-vips/Sources/Cvips/module.modulemap -target-sdk-version 11.0 -parse-as-library -module-name swift_vips -o /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/swift_vips.build/swift_vips.swift.o -index-store-path /Users/tobias/Developing/test/swift-vips/.build/x86_64-apple-macosx/debug/index/store -index-system-modules
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
^
/Users/tobias/Developing/test/swift-vips/Sources/Cvips/shim.h:1:10: note: in file included from /Users/tobias/Developing/test/swift-vips/Sources/Cvips/shim.h:1:
#include <vips/vips.h>
^
/usr/local/include/vips/vips.h:87:10: error: 'glib.h' file not found
#include <glib.h>
^
/Users/tobias/Developing/test/swift-vips/Sources/swift-vips/swift_vips.swift:1:8: error: could not build Objective-C module 'Cvips'
import Cvips
^
Clearly, something is not working. Since it is a bit difficult to understand what exactly is going wrong, I setup a different test:
git clone git@github.com:apple/swift-tools-support-core.gitgit checkout release/5.3
I then added a new executable target with the following code:
import Foundation
import TSCBasic
import TSCUtility
do {
let config = try PkgConfig(name: "vips",
additionalSearchPaths: [],
diagnostics: .init(),
fileSystem: localFileSystem,
brewPrefix: nil)
print(config)
} catch (let err) {
print(err)
}
When I run this in debug, it hits an assertion in: TSCBasic/Path.swift:L672:
func appending(component name: String) -> UNIXPath {
assert(!name.contains("/"), "\(name) is invalid path component")
Assertion failed: /usr/local/opt/libffi/lib/pkgconfig/libffi.pc.pc is invalid path component: file TSCBasic/Path.swift, line 672
in the assertion message the path is clearly messed up (double .pc.pc extension). If I remove the assertion, I get the **couldn't find pc file** error.
Finally, when I do git checkout main in my test repo of swift-tools-support-core my little test program works as expected and I get the following output.
PkgConfig(name: "vips",
pcFile: <AbsolutePath:"/usr/local/lib/pkgconfig/vips.pc">,
cFlags: ["-I/usr/local/Cellar/vips/8.10.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/expat/2.2.10/include", "-I/usr/local/Cellar/libgsf/1.14.47/include/libgsf-1", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/fftw/3.3.8_2/include", "-I/usr/local/Cellar/imagemagick/7.0.10-35/include/ImageMagick-7", "-I/usr/local/Cellar/imagemagick/7.0.10-35/include/ImageMagick-7", "-Xpreprocessor", "-fopenmp", "-DMAGICKCORE_HDRI_ENABLE=1", "-DMAGICKCORE_QUANTUM_DEPTH=16", "-I/usr/local/Cellar/orc/0.4.32/include/orc-0.4", "-I/usr/local/Cellar/little-cms2/2.11/include", "-I/usr/local/Cellar/openexr/2.5.3/include/OpenEXR", "-I/usr/local/Cellar/ilmbase/2.5.3/include", "-I/usr/local/Cellar/ilmbase/2.5.3/include/OpenEXR", "-I/usr/local/Cellar/libheif/1.9.1/include", "-I/usr/local/Cellar/poppler/20.11.0/include/poppler/glib", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/cairo/1.16.0_3/include/cairo", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/pixman/0.40.0/include/pixman-1", "-I/usr/local/Cellar/fontconfig/2.13.1/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/libpng/1.6.37/include/libpng16", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/poppler/20.11.0/include/poppler", "-I/usr/local/Cellar/cairo/1.16.0_3/include/cairo", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/pixman/0.40.0/include/pixman-1", "-I/usr/local/Cellar/fontconfig/2.13.1/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/libpng/1.6.37/include/libpng16", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/librsvg/2.50.1/include/librsvg-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/gdk-pixbuf/2.40.0_1/include/gdk-pixbuf-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/cairo/1.16.0_3/include/cairo", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/pixman/0.40.0/include/pixman-1", "-I/usr/local/Cellar/fontconfig/2.13.1/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/libpng/1.6.37/include/libpng16", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/cairo/1.16.0_3/include/cairo", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/pixman/0.40.0/include/pixman-1", "-I/usr/local/Cellar/fontconfig/2.13.1/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/libpng/1.6.37/include/libpng16", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/openslide/3.4.1_5/include/openslide", "-I/usr/local/Cellar/libmatio/1.5.18/include", "-I/usr/local/opt/hdf5/include", "-I/usr/include", "-I/usr/local/Cellar/cfitsio/3.490/include", "-I/usr/local/Cellar/webp/1.1.0/include", "-I/usr/local/Cellar/webp/1.1.0/include", "-I/usr/local/Cellar/webp/1.1.0/include", "-I/usr/local/Cellar/webp/1.1.0/include", "-I/usr/local/Cellar/webp/1.1.0/include", "-I/usr/local/Cellar/pango/1.46.2/include/pango-1.0", "-I/usr/local/Cellar/pango/1.46.2/include/pango-1.0", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/harfbuzz/2.7.2/include/harfbuzz", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/graphite2/1.3.14/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/fribidi/1.0.10/include/fribidi", "-I/usr/local/Cellar/fontconfig/2.13.1/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/cairo/1.16.0_3/include/cairo", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/pixman/0.40.0/include/pixman-1", "-I/usr/local/Cellar/fontconfig/2.13.1/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/libpng/1.6.37/include/libpng16", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/fontconfig/2.13.1/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/fribidi/1.0.10/include/fribidi", "-I/usr/local/Cellar/harfbuzz/2.7.2/include/harfbuzz", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/graphite2/1.3.14/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/cairo/1.16.0_3/include/cairo", "-I/usr/local/Cellar/glib/2.66.2_1/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/libffi/3.3/include", "-I/usr/local/Cellar/glib/2.66.2_1/include/glib-2.0", "-I/usr/local/Cellar/glib/2.66.2_1/lib/glib-2.0/include", "-I/usr/local/opt/gettext/include", "-I/usr/local/Cellar/pcre/8.44/include", "-I/usr/local/Cellar/pixman/0.40.0/include/pixman-1", "-I/usr/local/Cellar/fontconfig/2.13.1/include", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/opt/freetype/include/freetype2", "-I/usr/local/Cellar/libpng/1.6.37/include/libpng16", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/libtiff/4.1.0/include", "-I/usr/local/Cellar/libspng/0.6.1/include", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/libpng/1.6.37/include/libpng16", "-I/usr/local/Cellar/zlib/1.2.11/include", "-I/usr/local/Cellar/libimagequant/2.13.0/include", "-I/usr/local/Cellar/jpeg/9d/include", "-I/usr/local/Cellar/libexif/0.6.22/include"], libs: ["-L/usr/local/Cellar/vips/8.10.2_1/lib", "-lvips", "-L/usr/local/Cellar/glib/2.66.2_1/lib", "-lgobject-2.0", "-L/usr/local/Cellar/glib/2.66.2_1/lib", "-lglib-2.0", "-L/usr/local/opt/gettext/lib", "-lintl"], diagnostics: [])
Summary
So there seems to be a bug in the pc file lookup / parsing in the release/5.3 branch. In main everything seems to work as expected.
Is this bug already tracked somewhere? Is there an upcoming Swift 5.3 bugfix release that will contain this fix?