Build SQLCipher from Command Line

[chriswjones]

Hi @groue i am having trouble building an iOS project from the command line (it is building and running in Xcode fine). It has GRDB embedded to use GRDBCipher. I have tracked down the issue and it seems related to #41 .

The amalgamation is failing to compile when xcodebuild is run with -sdk iphoneos. Here is the output from trying to compile GRDBCipheriOS
xcodebuild build -workspace GRDB.xcworkspace -scheme GRDBCipheriOS

...
clang: error: no such file or directory: '/Users/chris/Library/Developer/Xcode8/DerivedData/GRDB-dorpyeywouyvbhchskfwzdrnycof/Build/Products/Debug-iphoneos/libsqlcipher.a'

** BUILD FAILED **


The following build commands failed:
	Ld /Users/chris/Library/Developer/Xcode8/DerivedData/GRDB-dorpyeywouyvbhchskfwzdrnycof/Build/Intermediates/GRDB.build/Debug-iphoneos/GRDBCipheriOS.build/Objects-normal/armv7/GRDBCipher normal armv7
	Ld /Users/chris/Library/Developer/Xcode8/DerivedData/GRDB-dorpyeywouyvbhchskfwzdrnycof/Build/Intermediates/GRDB.build/Debug-iphoneos/GRDBCipheriOS.build/Objects-normal/arm64/GRDBCipher normal arm64
(2 failures)

Here is the output attempting to compile just sqlcipher amalgamation target with -sdk iphoneos
xcodebuild build -project SQLCipher/src/sqlcipher.xcodeproj -target amalgamation -sdk iphoneos

...
checking build system type... i386-apple-darwin16.1.0
checking host system type... i386-apple-darwin16.1.0
checking how to print strings... printf
checking for gcc... /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... configure: error: in `/repos/scratch/GRDB.swift/SQLCipher/src':
configure: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details
Command /bin/sh failed with exit code 1

** BUILD FAILED **


The following build commands failed:
	PhaseScriptExecution Run\ Script build/sqlcipher.build/Release-iphoneos/amalgamation.build/Script-9069D08A0FCE185A0042E34C.sh
(1 failure)

That script file mentioned in the error is the amalgamation post script from #41

I was able to get a GRDBCipher to compile via the command line if i first compile the amalgamation target via the command line with -sdk macosx, and remove the amalgamation target from sqlcipher's target dependencies so it will use the previously produced output rather than trying to compile it.

I have tried updating the run script in the sqlcipher amalgamation target, and no matter what i override the build will fail if i use -sdk iphoneos in the command line. Any ideas/help would be greatly appreciated. Thanks!

[groue]

Hello @chriswjones

I agree that SQLCipher integration is fragile, to say the least. I even had to drop Carthage support for it, because it was failing too often (read: sometimes).

It looks like the sqlcipher target from the Xcode project shipped by https://github.com/sqlcipher/sqlcipher doesn't inherit the platform of their dependent targets (GRDBCipherOSX or GRDBCipheriOS). This explains the no such file or directory: .../Debug-iphoneos/libsqlcipher.a error: when one builds, say, GRDBCipheriOS, sqlcipher may actually build a macOS library, instead of an iOS library.

I don't know if this is a bug with the Xcode project shipped by https://github.com/sqlcipher/sqlcipher, or a bug in xcodebuild, or a normal behavior 😶. This topic is just beyond my skills.

Either way, since Xcode can build both macOS and iOS GRDBCipher targets, I suppose xcodebuild can as well. We just don't know yet what arguments or environment variables are missing. Observing the building logs from Xcode may shed some light.

[chriswjones]

@groue Thanks for the response. I spent some time digging into it and did not come up with a solution to build via command line. However, I was able to get Xcode Bots to build the project successfully and build a workaround to hook into our team city build server after a bot run.

[groue]

@chriswjones All right, let's close this issue for now, since nobody really knows how to deal with it for good ;-) Thanks for the hint about Xcode Bots: it may well help other developers out there that will stumble upon this issue. Happy GRDB!