How to implement cross-Compilation of protobuf on armv7, armv7s, and i386 in XCODE

After four days of hard work, I finally completed the cross-Compilation of protobuf2.5.0 on xcode. I hope that my colleagues who encountered the same problems will not be confused. Share as follows:

Step 1: deploy protoc.exe

1) sudo su --- enter the Management Mode

// Perform the following operations to switch to the protobuf Folder:

2)./configure

3) make

4) make check

5) make install

In this case, you can view the makefile file under the protobuf folder, and view the local environment represented by-build and the runtime environment of the compiled library represented by-host.

My local-build = x86_64-apple-darwin12.3.0

-Host = x86_64-apple-darwin12.3.0

These two parameters need to be used in subsequent configuration scripts, consistent with the i686-apple-darwin12.3.0 in the footsteps and the arm-apple-darwin12.3.0 suffix "arm-apple-darwin12.3.0)

6) make distclean clean the generated makefile to prepare for cross-compilation and configuration of the new makefile

Step 2: Configure cross-Compilation

1) execute the script ios-build.sh, the script content is as follows:

Configure_for_platform (){

Export PLATFORM = $1

# Export PLATFORM = iPhoneOS

Echo "Platform is $ {PLATFORM }"

If ["$ PLATFORM" = "iPhoneSimulator"]; then

Export ARCHITECTURE = i386

Export ARCH = i686-apple-darwin12.3.0

Fi

If ["$ PLATFORM" = "iPhoneOS"]; then

Export ARCHITECTURE = $2

Export ARCH = arm-apple-darwin12.3.0

Fi

Export ARCH_PREFIX = $ ARCH-

Export SDKVER = "6.1" # the sdk version must be correct

Export DEVROOT =/Applications/Xcode. app/Contents/Developer/Platforms/$ {PLATFORM}. platform/Developer

Export SDKROOT = "$ DEVROOT/SDKs/$ {PLATFORM} $ SDKVER. sdk"

Export PKG_CONFIG_PATH = "$ SDKROOT/usr/lib/pkgconfig: $ DEVROOT/usr/lib/pkgconfig"

Export AS = "$ DEVROOT/usr/bin/"

Export ASCPP = "$ DEVROOT/usr/bin/"

Export AR = "$ DEVROOT/usr/bin/ar"

Export RANLIB = "$ DEVROOT/usr/bin/ranlib"

# Export CPP = "$ DEVROOT/usr/bin/c ++"

# Export CXXCPP = "$ DEVROOT/usr/bin/c ++"

Export CC = "$ DEVROOT/usr/bin/gcc"

Export CXX = "$ DEVROOT/usr/bin/g ++"

Export LD = "$ DEVROOT/usr/bin/ld"

Export STRIP = "$ DEVROOT/usr/bin/strip"

Export LIBRARY_PATH = "$ SDKROOT/usr/lib"

Export CPPFLAGS = ""

# Export CFLAGS = "-arch armv7-fmessage-length = 0-pipe-fpascal-strings-miphoneos-version-min = 4.0-isysroot = $ SDKROOT-I $ SDKROOT/usr/ include-I $ SDKROOT/usr/include/c ++/4.2.1 /"

Export CFLAGS = "-arch $ {ARCHITECTURE}-fmessage-length = 0-pipe-fpascal-strings-miphoneos-version-min = 4.0-isysroot = $ SDKROOT-I $ SDKROOT/ usr/include-I $ SDKROOT/usr/include/c ++/4.2.1 /"

Export CXXFLAGS = "$ CFLAGS"

# Export LDFLAGS = "-isysroot = '$ sdkroot'-L $ SDKROOT/usr/lib/system-L $ SDKROOT/usr/lib /"

Export LDFLAGS = "-arch $ {ARCHITECTURE}-isysroot = '$ sdkroot'-L $ SDKROOT/usr/lib/system-L $ SDKROOT/usr/lib /"

./Configure -- host =$ {ARCH} -- with-protoc = protoc -- enable-static -- disable-shared

}

Mkdir ios-build

# Build for iPhoneSimulator

Configure_for_platform iPhoneSimulator

Make clean

Make

Cp src/. libs/libprotobuf-lite.a for ios-build/libprotobuf-lite-i386.a

# Extract the complete version (i386)

Cp src/. libs/libprotobuf. a ios-build/libprotobuf-i386.a

# Build for iPhone OS armv7

Configure_for_platform iPhoneOS armv7

Make clean

Make

Cp src/. libs/libprotobuf-lite.a for ios-build/libprotobuf-lite-armv7.a

# Extract the complete version (armv7)

Cp src/. libs/libprotobuf. a ios-build/libprotobuf-armv7.a

# Build for iPhone OS armv7s

Configure_for_platform iPhoneOS armv7s

Make clean

Make

Cp src/. libs/libprotobuf-lite.a for ios-build/libprotobuf-lite-armv7s.a

# Extract the complete version (armv7s)

Cp src/. libs/libprotobuf. a ios-build/libprotobuf-armv7s.a

Make clean

# Cerate a fat library containing all achitectures in libprotobuf-lite.a

Xcrun-sdk iphoneos lipo-arch armv7 ios-build/libprotobuf-lite-armv7.a-arch armv7s ios-build/libprotobuf-lite-armv7s.a-arch i386 ios-build/libprotobuf-lite-i386.a-create-output ios-build/libprotobuf-lite.a

# Merge three full versions of libprotobuf.)

Xcrun-sdk iphoneos lipo-arch armv7 ios-build/libprotobuf-armv7.a-arch armv7s ios-build/libprotobuf-armv7s.a-arch i386 ios-build/libprotobuf-i386.a-create-output ios-build/libprotobuf.

2) copy the packaged libprotobuf-lite.a and libprotobuf. a to the Project for compilation, You can compile protobuf in xcode Simulator version and real machine version, complete the cross-compilation.