Error: `Symbol not found`

[mveytsman]

I'm getting the following error when I load the library

dyld: lazy symbol binding failed: Symbol not found: ___strlcpy_chk
  Referenced from: dumpdecrypted.dylib
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ___strlcpy_chk
  Referenced from: dumpdecrypted.dylib
  Expected in: /usr/lib/libSystem.B.dylib

Trace/BPT trap: 5

I'm running XCode 5.1, iOS 7.1 SDK, and using an iPod Touch running iOS 6.1.5

Any suggestions?

[arrtchiu]

You need to install and compile with iOS6.1SDK if you're going to run on iOS6.1 :)

1. Install SDK - good guide here: http://planetlotus.org/profiles/john-jardin_124302

2. Apply this patch:

   diff --git a/Makefile b/Makefile
   index 537da37..0da2d9b 100644
   --- a/Makefile
   +++ b/Makefile
   @@ -1,6 +1,6 @@
   -GCC_BIN=`xcrun --sdk iphoneos --find gcc`
   -GCC_UNIVERSAL=$(GCC_BASE) -arch armv7 -arch armv7s -arch arm64
   -SDK=`xcrun --sdk iphoneos --show-sdk-path`
   +GCC_BIN=`xcrun --sdk iphoneos6.1 --find gcc`
   +GCC_UNIVERSAL=$(GCC_BASE) -arch armv7 -arch armv7s
   +SDK=`xcrun --sdk iphoneos6.1 --show-sdk-path`
   
    CFLAGS =
    GCC_BASE = $(GCC_BIN) -Os $(CFLAGS) -Wimplicit -isysroot $(SDK) -F$(SDK)/System/Library/Frameworks -F$(SDK)/System/Library/PrivateFrameworks
   diff --git a/dumpdecrypted.c b/dumpdecrypted.c
   index 3313be2..f67619c 100644
   --- a/dumpdecrypted.c
   +++ b/dumpdecrypted.c
   @@ -73,7 +73,7 @@ void dumptofile(int argc, const char **argv, const char **envp, const char **app
           for (i=0; i<pvars->mh->ncmds; i++) {
                   /*printf("Load Command (%d): %08x\n", i, lc->cmd);*/
   
   -               if (lc->cmd == LC_ENCRYPTION_INFO || lc->cmd == LC_ENCRYPTION_INFO_64) {
   +               if (lc->cmd == LC_ENCRYPTION_INFO) {
                           eic = (struct encryption_info_command *)lc;
   
                           /* If this load command is present, but data is not crypted then exit */
   

[Lobster-King]

perfect!!!