Build static Graphviz libraries for iOS

Question

I am trying build the static libraries for Graphviz to include them in in an iOS app, but I can't get it to work. Here's what I have done so far, using graphviz 2.28.0], Xcode 4.1, OSX 10.7 and I am targeting the iOS simulator.

I found Glen Low's configure instructions, and with some informed guesswork updated these to:

./configure --build=i486-apple-darwin --host=arm-apple-darwin9 --disable-dependency-tracking --enable-shared=no --enable-static=yes --enable-ltdl-install=no --enable-ltdl=no --enable-swig=no --enable-tcl=no --with-codegens=no --with-fontconfig=no --with-freetype2=no --with-ipsepcola=yes --with-libgd=no --with-quartz=yes --with-visio=yes --with-x=no --with-cgraph=no CC="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2" CPP="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 -E" CXX="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/g++-4.2" CXXCPP="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/g++-4.2 -E" OBJC="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2" LD="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/ld" CPPFLAGS="-arch armv6 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk -miphoneos-version-min=4.0" CXXCPPFLAGS="-arch armv6 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk -miphoneos-version-min=4.0"

This works, but then the "make" runs for a while and errors out with:

Making all in gvpr
  CCLD   mkdefs
ld: warning: ignoring file mkdefs.o, file was built for armv6 which is not the architecture being linked (i386)
ld: warning: ignoring file /usr/local/lib/libSystem.dylib, missing required architecture i386 in file
ld: warning: symbol dyld_stub_binder not found, normally in libSystem.dylib
Undefined symbols for architecture i386:
  "_exit", referenced from:
      start in crt1.10.6.o
  "_main", referenced from:
      start in crt1.10.6.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status
make[3]: *** [mkdefs] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

I don't quite understand all the architecture specifications, so any help to get this to work is most welcome.

Answer 1

Problem is imo that mkdefs is executed during the build process itself after it was created. So if you build for armv6 or armv7 the file can't be executed on the command line of Mac OS X. My workaround was to build a mkdefs for architecture i386 (which is needed for the iPhone simulator too) and copy it in the lib/gvpr directory after getting this error. Make sure that the file could not be overwritten and restart the build.

Answer 2

I got this working. The build script fails at the end when it tried to make an executable since it's compiled for i386 instead of x86 or x86_64 but all the libraries build just fine.

# For iPhoneOS
export DEV_iOS=/Developer/Platforms/iPhoneOS.platform/Developer
export SDK_iOS=${DEV_iOS}/SDKs/iPhoneOS5.0.sdk
export COMPILER_iOS=${DEV_iOS}/usr/bin
export CC=${COMPILER_iOS}/gcc
export CXX=${COMPILER_iOS}/g++
export LDFLAGS="-arch armv7 -pipe -Os -gdwarf-2 -no-cpp-precomp -mthumb -isysroot ${SDK_iOS}"
export CFLAGS=${LDFLAGS}
export CXXFLAGS=${LDFLAGS}
export LD=${COMPILER_iOS}/ld
export CPP=${COMPILER_iOS}/llvm-cpp-4.2
export AR=${COMPILER_iOS}/ar
export AS=${COMPILER_iOS}/as
export NM=${COMPILER_iOS}/nm
export CXXCPP=${COMPILER_iOS}/llvm-cpp-4.2
export RANLIB=${COMPILER_iOS}/ranlib

./configure --host=arm-apple-darwin11 --disable-dependency-tracking --enable-shared=no --enable-static=yes --enable-ltdl-install=no --enable-ltdl=no --enable-swig=no --enable-tcl=no --with-codegens=no --with-fontconfig=no --with-freetype2=no --with-ipsepcola=yes --with-libgd=no --with-quartz=yes --with-visio=yes --with-x=no --with-cgraph=no