Apple Mach-O Linker Warning & Error

[kjakm]

I had mailcore2 working on a project but when I upgraded to Xcode 6 it stopped working. I switched back to Xcode 5, reinstalled MailCore in the project but now I'm getting a bunch of errors.

They are all linker errors. There are over 50 but here are the first few:

ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/Externals/ctemplate/lib'
ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/Externals/icu4c/lib'
ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/Externals/libetpan/lib'
ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/libetpan/build-mac/build/Debug-iphoneos'
Undefined symbols for architecture i386:
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::at(unsigned long) const", referenced from:
      ctemplate::ContainsFullWord(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in libctemplate-ios.a(libctemplate_la-template_pathops.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::find(char const*, unsigned long, unsigned long) const", referenced from:

It seems like a few folders are missing from externals. I have deleted externals several times and rebuilt but these missing folders don't seem to be downloading.

Any help appreciated.

[dinhvh]

Could you show the output of ./prepare.sh script in a gist?

Hoa V. Dinh

On Wednesday, September 17, 2014 at 9:03 AM, Kieran McGrady wrote:

I had mailcore2 working on a project but when I upgraded to Xcode 6 it stopped working. I switched back to Xcode 5, reinstalled MailCore in the project but now I'm getting a bunch of errors. They are all linker errors. There are over 50 but here are the first few: ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/Externals/ctemplate/lib' ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/Externals/icu4c/lib' ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/Externals/libetpan/lib' ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/libetpan/build-mac/build/Debug-iphoneos' Undefined symbols for architecture i386: "std::1::basic_string<char, std::__1::char_traits, std::1::allocator >::at(unsigned long) const", referenced from: ctemplate::ContainsFullWord(std::1::basic_string<char, std::__1::char_traits, std::1::allocator > const&, std::1::basic_string<char, std::__1::char_traits, std::1::allocator > const&) in libctemplate-ios.a(libctemplate_la-template_pathops.o) "std::1::basic_string<char, std::__1::char_traits, std::1::allocator >::find(char const*, unsigned long, unsigned long) const", referenced from:
It seems like a few folders are missing from externals. I have deleted externals several times and rebuilt but these missing folders don't seem to be downloading. Any help appreciated.

— Reply to this email directly or view it on GitHub (https://github.com/MailCore/mailcore2/issues/873).

[kjakm]

Thanks for getting back to me. I will post it tomorrow when I'm back in the office (can't access that system from home).

[kjakm]

This is the output from /.prepare.sh:

Getting prebuilt libraries...
Current branch master is up to date.
building file list ... done

sent 355 bytes  received 20 bytes  750.00 bytes/sec
total size is 36800373  speedup is 98134.33
~/iOSDevelopment/projectname/mailcore/scripts
install from cache
Current branch master is up to date.
install from cache
Current branch master is up to date.
install from cache

I also deleted the externals folder and ran it a second time. This time building libetpan failed with the following error:

xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance

Finally, to fix the above error, I changed the directory xcode-select was pointing to, deleted externals and ran ./prepare.sh again. The results were good until ctemplate:

Cloning into 'ctemplate'...
remote: Counting objects: 1974, done.
remote: Compressing objects: 100% (724/724), done.
remote: Total 1974 (delta 1208), reused 1974 (delta 1208)
Receiving objects: 100% (1974/1974), 2.40 MiB | 486.00 KiB/s, done.
Resolving deltas: 100% (1208/1208), done.
Checking connectivity... done.
install from cache
SDK not found
SDK not found
SDK not found
SDK not found

[kjakm]

I actually got ./prepare.sh fully working now but I'm still getting the linker errors when building the iOS project. Full output of ./perpare.sh is:

~/iOSDevelopment/projectname/mailcore/Externals/prebuilt ~/iOSDevelopment/projectname/mailcore/scripts
Getting prebuilt libraries...
Cloning into 'mailcore2-deps'...
remote: Counting objects: 13, done.
remote: Compressing objects: 100% (11/11), done.
remote: Total 13 (delta 0), reused 12 (delta 0)
Unpacking objects: 100% (13/13), done.
Checking connectivity... done.
building file list ... done
./
.gitignore
README.md
ctemplate-ccca4faf79.zip
ctemplate-ios-ccca4faf79~2.zip
icu4c-51_1~1.zip
icu4c-ios-51_1~3.zip
libetpan-51ca6bfc3c.zip
libetpan-ios-51ca6bfc3c.zip
libsasl-ios-51ca6bfc3c.zip
prebuilt.list
tidy-html5-ios-74e443dfee~1.zip

sent 36805732 bytes  received 268 bytes  73612000.00 bytes/sec
total size is 36800373  speedup is 1.00
~/iOSDevelopment/projectname/mailcore/scripts
install from cache
Cloning into 'libetpan'...
remote: Counting objects: 3043, done.
remote: Total 3043 (delta 0), reused 0 (delta 0)
Receiving objects: 100% (3043/3043), 8.23 MiB | 99.00 KiB/s, done.
Resolving deltas: 100% (1967/1967), done.
Checking connectivity... done.
install from cache
Cloning into 'ctemplate'...
remote: Counting objects: 1974, done.
remote: Compressing objects: 100% (724/724), done.
remote: Total 1974 (delta 1208), reused 1974 (delta 1208)
Receiving objects: 100% (1974/1974), 2.40 MiB | 596.00 KiB/s, done.
Resolving deltas: 100% (1208/1208), done.
Checking connectivity... done.
install from cache
Cloning into 'tidy-html5'...
remote: Counting objects: 1411, done.
remote: Compressing objects: 100% (5/5), done.
remote: Total 1411 (delta 4), reused 17 (delta 4)
Receiving objects: 100% (1411/1411), 1.15 MiB | 214.00 KiB/s, done.
Resolving deltas: 100% (560/560), done.
Checking connectivity... done.
install from cache
install from cache
Current branch master is up to date.
install from cache
Current branch master is up to date.
install from cache

The 4 warnings that appeared before the errors have reduced to 1 now though:

ld: warning: directory not found for option '-L/Users/kieranmcgrady/iOSDevelopment/projectname/mailcore/libetpan/build-mac/build/Debug-iphoneos'

[kjakm]

Ok, so I did two things which finally fixed this. I removed all library search paths that were in the project (could you confirm if these should be here, they were inserted by another developer so I'm not sure) and I removed MailCore and reinstalled it in the project. It's now working. Thanks for your help and work on the project.

[dinhvh]

Here's the values of library search path that are on the project.

//:configuration = Debug
LIBRARY_SEARCH_PATHS = "$(SRCROOT)/../Externals/libetpan/lib" "$(SRCROOT)/../Externals/icu4c/lib" "$(SRCROOT)/../Externals/ctemplate/lib"
LIBRARY_SEARCH_PATHS[sdk=iphonesimulator*] = $(IOS_LIBRARY_SEARCH_PATHS)
LIBRARY_SEARCH_PATHS[sdk=macosx*] = $(OSX_LIBRARY_SEARCH_PATHS)
LIBRARY_SEARCH_PATHS[sdk=iphoneos*] = $(IOS_LIBRARY_SEARCH_PATHS)

//:configuration = Release
LIBRARY_SEARCH_PATHS = "$(SRCROOT)/../Externals/libetpan/lib" "$(SRCROOT)/../Externals/icu4c/lib" "$(SRCROOT)/../Externals/ctemplate/lib"
LIBRARY_SEARCH_PATHS[sdk=iphonesimulator*] = $(IOS_LIBRARY_SEARCH_PATHS)
LIBRARY_SEARCH_PATHS[sdk=macosx*] = $(OSX_LIBRARY_SEARCH_PATHS)
LIBRARY_SEARCH_PATHS[sdk=iphoneos*] = $(IOS_LIBRARY_SEARCH_PATHS)

//:completeSettings = some
LIBRARY_SEARCH_PATHS

[kjakm]

Thanks!