What underlying OS is your build process running on? And where are you getting your Swift toolchain?<div><br></div><div>Within your toolchain is a `glibc.modulemap` which contains hard-coded absolute paths to certain system headers. The failure you are seeing is presumably due to the fact that system headers are not present at those paths. You may have to manually modify the modulemap to point to the actual location of the headers on the system that is performing the build. </div><div><br></div><div>This old bug contains some tidbits that may also help you understand what's going on here: <a href="https://bugs.swift.org/plugins/servlet/mobile#issue/SR-15">https://bugs.swift.org/plugins/servlet/mobile#issue/SR-15</a></div><div><br></div><div>Brian<br><br>torsdag 9 juni 2016 skrev Shao Miller <<a href="mailto:swift-build-dev@synthetel.com">swift-build-dev@synthetel.com</a>>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Thank you for your kind response.<br>
<br>
The command I execute is: swift build -Xcc -I/app/.delta/ -Xswiftc -I/app/.delta/ -v<br>
<br>
The /app/.delta/ directory is where Swift and most dependencies have been dumped. The file /app/.delta/usr/include/complex.h exists. The error is:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
/app/.delta/usr/lib/swift/linux/x86_64/glibc.modulemap:33:14: error: header '///usr/include/complex.h' not found<br>
header "///usr/include/complex.h"<br>
^<br>
<unknown>:0: error: could not build Objective-C module 'SwiftGlibc'<br>
error: exit(1): /app/.delta/usr/bin/swiftc --driver-mode=swift -I /app/.delta/usr/lib/swift/pm -L /app/.delta/usr/lib/swift/pm -lPackageDescription /app/PerfectTemplate/Package.swift -fileno 3<br>
</blockquote>
<br>
Thank you for pointing out that these build-packs are using 'swift build'. The two build-packs I'd looked at earlier today did not and I thought I'd recalled them having derived from the others you've mentioned. I was mistaken. My command somewhat resembles the IBM Bluemix build-pack command[1], which is:<br>
swift build --configuration release -Xcc -fblocks -Xcc -I$BUILD_DIR/.apt/usr/include ...and so on...<br>
<br>
I am using this[2] Swift. Running 'strace' on the BASh and all of its subprocesses during the compilation yields only these two instances of "complex":<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
[pid 28678] stat("///usr/include/complex.h", 0x7ffe84061ef0) = -1 ENOENT (No such file or directory)<br>
[pid 28679] write(2, "header '///usr/include/complex.h' not found", 43) = 43<br>
</blockquote>
<br>
Am I making an obvious mistake?<br>
<br>
[1] <a href="https://github.com/IBM-Swift/swift-buildpack/blob/bluemix-buildpack/bin/compile#L116" target="_blank">https://github.com/IBM-Swift/swift-buildpack/blob/bluemix-buildpack/bin/compile#L116</a><br>
[2] <a href="https://swift.org/builds/development/ubuntu1510/swift-DEVELOPMENT-SNAPSHOT-2016-05-31-a/swift-DEVELOPMENT-SNAPSHOT-2016-05-31-a-ubuntu15.10.tar.gz" target="_blank">https://swift.org/builds/development/ubuntu1510/swift-DEVELOPMENT-SNAPSHOT-2016-05-31-a/swift-DEVELOPMENT-SNAPSHOT-2016-05-31-a-ubuntu15.10.tar.gz</a><br>
<br>
Shao Miller<br>
Synthetel Corporation<br>
T: +1.9053927729 <tel:+1.9053927729><br>
E: <a>swift-build-dev@synthetel.com</a><br>
W: <a href="https://www.synthetel.com" target="_blank">https://www.synthetel.com</a><br>
<br>
On 6/9/2016 01:15, Brian Croom wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
IBM's buildpack as well as the ones from which it descends (<a href="https://github.com/cloudfoundry-community/swift-buildpack" target="_blank">https://github.com/cloudfoundry-community/swift-buildpack</a> and <a href="https://github.com/kylef/heroku-buildpack-swift" target="_blank">https://github.com/kylef/heroku-buildpack-swift</a>) are all based around SwiftPM and the `swift build` command. I have not personally experienced the problem you are describing either, although I have not tried pushing any apps using more recent Swift toolchain snapshots.<br>
<br>
Can you provide more details about how the error presents itself? Have you tried using any of these other buildpacks with your app code?<br>
<br>
Brian<br>
<br>
onsdag 8 juni 2016 skrev Shao Miller via swift-build-dev <<a>swift-build-dev@swift.org</a> <mailto:<a>swift-build-dev@swift.org</a>>>:<br>
<br>
Thank you for your kind response.<br>
<br>
As mentioned, there is no choice: If the headers aren't present in<br>
the base image that a particular Cloud provider provides, they can<br>
only be present in the application sand-box by one's own hand.<br>
<br>
All Swift build-packs to date and to my knowledge use Swift 2.2<br>
and do not use the Swift 3 'swift build' process. I'm trying to<br>
develop the next generation.<br>
<br>
Shao Miller<br>
Synthetel Corporation<br>
T: +1.9053927729 <tel:+1.9053927729><br>
E: <a>swift-build-dev@synthetel.com</a><br>
<javascript:_e(%7B%7D,'cvml','<a>swift-build-dev@synthetel.com</a>');><br>
W: <a href="https://www.synthetel.com" target="_blank">https://www.synthetel.com</a><br>
<br>
On 6/8/2016 23:08, Daniel Dunbar wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Why do you want the headers inside the app sandbox? Usually they would remain outside.<br>
<br>
<br>
<br>
Have you looked at IBM's CloudFoundry build pack (<a href="https://github.com/IBM-Swift/swift-buildpack" target="_blank">https://github.com/IBM-Swift/swift-buildpack</a>)? How does it handle the problem you are trying to solve?<br>
<br>
<br>
<br>
- Daniel<br>
<br>
<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On Jun 8, 2016, at 8:03 PM, Shao Miller via swift-build-dev<<a>swift-build-dev@swift.org</a>><br>
<javascript:_e(%7B%7D,'cvml','<a>swift-build-dev@swift.org</a>');> wrote:<br>
<br>
<br>
<br>
Good day, Swift package manager development folks.<br>
<br>
<br>
<br>
(There are at least two separate issues being inquired about, but with the same introductory context.)<br>
<br>
<br>
<br>
"Cloudy" deployment options derived from or akin to CloudFoundry are agonizingly locked-down environments. Essentially Swift and all of its dependencies and one's project's dependencies must be stuffed into an arbitrary directory (henceforth referred to as "the hole," but usually /app/ ) and build processes performed without any root-user privileges. One consequence is that one cannot use the OS' package-management system to install dependencies, but one must obtain them and wrestle them into "the hole," instead. The strategy seems rather silly.<br>
<br>
<br>
<br>
While developing a so-called "buildpack" for Swift 3 projects to be deployed via CloudFoundryish options and utilizing the 'swift build' command, I have come across a few issues.<br>
<br>
<br>
<br>
One issue is that 'swift build' wants to do something with the /usr/lib/swift/linux/x86_64/glibc.modulemap file, but that file contains a hard-coded path to a ///usr/include/complex.h header-file. As is usually the case, this hard-coded path will only work in a narrow set of environments, which excludes "the hole" that CloudFoundry provides. I have attempted to use '-Xcc -I/the/hole' and '-Xswiftc -I/the/hole' command-line arguments, but I do not observe these paths (nor sub-paths) being tried for the complex.h header-file during complication. I used 'strace' to trace the compilation process, including all subprocesses.<br>
<br>
<br>
<br>
Is there some other mechanism to instruct the Swift 3 package manager that its [unfortunately] hard-coded paths are relative to some particular path? If not, would it be sensible to introduce some logic to specify such a prefix path?<br>
<br>
<br>
<br>
Thank you for your time and attention.<br>
<br>
-- <br>
<br>
<br>
Shao Miller<br>
<br>
Synthetel Corporation<br>
<br>
T: +1.9053927729 <tel:+1.9053927729><br>
<br>
<a>E:swift-build-dev@synthetel.com</a><br>
<javascript:_e(%7B%7D,'cvml','<a>swift-build-dev@synthetel.com</a>');><br>
<br>
W:<a href="https://www.synthetel.com" target="_blank">https://www.synthetel.com</a><br>
<br>
<br>
<br>
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</blockquote></blockquote>
<br>
</blockquote>
<br>
</blockquote></div>