Difference between revisions of "Compiling ScummVM/iPhone"

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(→‎Unofficial SDK: Update cross-compilation instructions.)
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This page explains how to compile your own version of [[ScummVM]] using the [[iPhone]] backend.
This page explains how to compile your own version of [[ScummVM]] for [[iOS]] based devices (iPhone/iPad). See also [[Compiling ScummVM/macOS]].  


= Using XCode =
== Using Xcode ==


'''TODO:''' Describe how to use XCode and create_project to compile for iOS using the official Apple toolchain.
You can compile ScummVM with the official tools from Apple. For more information, see the [https://docs.scummvm.org/en/latest/other_platforms/ios.html iOS page] in the [https://docs.scummvm.org/ user documentation].
 
== Using the command line ==
For jailbroken devices, it is also possible to compile the project from command line. You'll need a working toolchain, and some tools, like '''ldid''', to fake the code signature.
 
Here is a script to download, and compile all the required tools. This script has been wrote for Debian 8.2, and should be run as root.
<syntaxhighlight lang="bash">
#!/bin/bash
 
if [ $UID -ne 0 ]; then
echo "This script should be run by the root user"
exit 1
fi
 
# Install the Clang compiler
apt-get install -y clang-3.4 libclang-3.4-dev llvm-3.4 libtool bison flex automake subversion git pkg-config wget libssl-dev uuid-dev libxml2-dev || exit 1
 
# Add LLVM to the linker library path
echo /usr/lib/llvm-3.4/lib > /etc/ld.so.conf.d/libllvm-3.4.conf
ldconfig
 
# Add symlinks for the LLVM headers
ln -s /usr/lib/llvm-3.4/bin/llvm-config /usr/bin/llvm-config || exit 1
ln -s /usr/include/llvm-3.4/llvm /usr/include/llvm || exit 1
ln -s /usr/include/llvm-c-3.4/llvm-c /usr/include/llvm-c || exit 1
ln -s /usr/bin/clang-3.4 /usr/bin/clang || exit 1
ln -s /usr/bin/clang++-3.4 /usr/bin/clang++ || exit 1
 
# Build the linker
svn checkout http://ios-toolchain-based-on-clang-for-linux.googlecode.com/svn/trunk/cctools-porting || exit 1
cd cctools-porting
sed -i'' 's/proz -k=20  --no-curses/wget/g' cctools-ld64.sh
./cctools-ld64.sh || exit 1
 
cd cctools-855-ld64-236.3
./autogen.sh || exit 1
./configure --prefix=/usr/local --target=arm-apple-darwin11 || exit 1
make || exit 1
make install || exit 1
cd ../..
 
# Install ios-tools
wget https://ios-toolchain-based-on-clang-for-linux.googlecode.com/files/iphonesdk-utils-2.0.tar.gz || exit 1
tar xzf iphonesdk-utils-2.0.tar.gz
cd iphonesdk-utils-2.0
patch -p0 <<_EOF
*** genLocalization2/getLocalizedStringFromFile.cpp    2015-04-02 04:45:39.309837816 +0530
--- genLocalization2/getLocalizedStringFromFile.cpp    2015-04-02 04:45:11.525700021 +0530
***************
*** 113,115 ****
      clang::HeaderSearch headerSearch(headerSearchOptions,
-                                      fileManager,
                                      *pDiagnosticsEngine,
--- 113,115 ----
      clang::HeaderSearch headerSearch(headerSearchOptions,
+                                      sourceManager,
                                      *pDiagnosticsEngine,
***************
*** 129,134 ****
                  false);
-    clang::HeaderSearch headerSearch(fileManager,
                                      *pDiagnosticsEngine,
                                      languageOptions,
-                                      pTargetInfo);
      ApplyHeaderSearchOptions(headerSearch, headerSearchOptions, languageOptions, pTargetInfo->getTriple());
--- 129,134 ----
                  false);
+    clang::HeaderSearch headerSearch(fileManager);/*,
                                      *pDiagnosticsEngine,
                                      languageOptions,
+                                      pTargetInfo);*/
      ApplyHeaderSearchOptions(headerSearch, headerSearchOptions, languageOptio
_EOF
 
./autogen.sh || exit 1
CC=clang CXX=clang++ ./configure --prefix=/usr/local || exit 1
make || exit 1
make install || exit 1
 
# Install the iOS SDK 8.1
mkdir -p /usr/share/ios-sdk
cd /usr/share/ios-sdk
wget http://iphone.howett.net/sdks/dl/iPhoneOS8.1.sdk.tbz2 || exit 1
tar xjf iPhoneOS8.1.sdk.tbz2
rm iPhoneOS8.1.sdk.tbz2
</syntaxhighlight>
 
Now, in order to compile ScummVM, execute the following commands:
<syntaxhighlight lang="bash">
export SDKROOT=/usr/share/ios-sdk/iPhoneOS8.1.sdk
export CC=ios-clang
export CXX=ios-clang++
./configure --host=ios7 --disable-mt32emu --enable-release
make ios7bundle
</syntaxhighlight>
 
At the end of the compilation, you'll find a '''ScummVM.app''' application: copy it over SSH, and reboot your device.


= Cross-Compilation =
= Cross-Compilation =
Line 34: Line 130:


* For ''iphone'' use:
* For ''iphone'' use:
<source lang="bash">
<syntaxhighlight lang="bash">
export TARGET=arm-apple-darwin9
export TARGET=arm-apple-darwin9
</source>
</syntaxhighlight>


* For ''ios7'' use:
* For ''ios7'' use:
<source lang="bash">
<syntaxhighlight lang="bash">
export TARGET=arm-apple-darwin11
export TARGET=arm-apple-darwin11
</source>
</syntaxhighlight>


==== Setting up the Environment ====
==== Setting up the Environment ====


<source lang="bash">
<syntaxhighlight lang="bash">
export PATH="$IOS_TOOLCHAIN_BASE/bin:$IOS_TOOLCHAIN_BASE/$TARGET/bin:$IOS_TOOLCHAIN_BASE/$TARGET/usr/bin:$PATH"
export PATH="$IOS_TOOLCHAIN_BASE/bin:$IOS_TOOLCHAIN_BASE/$TARGET/bin:$IOS_TOOLCHAIN_BASE/$TARGET/usr/bin:$PATH"
export CPPFLAGS="-isystem $IOS_TOOLCHAIN_BASE/$TARGET/usr/include"
export CPPFLAGS="-isystem $IOS_TOOLCHAIN_BASE/$TARGET/usr/include"
export LDFLAGS="-L$IOS_TOOLCHAIN_BASE/$TARGET/usr/lib"
export LDFLAGS="-L$IOS_TOOLCHAIN_BASE/$TARGET/usr/lib"
</source>
</syntaxhighlight>
Where ''IOS_TOOLCHAIN_BASE'' contains the directory where you installed the toolchain. And ''TRAGET'' has been setup from the previous step.
Where ''IOS_TOOLCHAIN_BASE'' contains the directory where you installed the toolchain. And ''TRAGET'' has been setup from the previous step.


Line 60: Line 156:
First, navigate to a path where you want your build files to be located (this can be the ScummVM root directory but does not have to be).
First, navigate to a path where you want your build files to be located (this can be the ScummVM root directory but does not have to be).
Then run the following:
Then run the following:
<source lang="bash">
<syntaxhighlight lang="bash">
./path/to/scummvm/configure --host=ios7 --with-staticlib-prefix=$IOS_TOOLCHAIN_BASE/$TARGET/usr
./path/to/scummvm/configure --host=ios7 --with-staticlib-prefix=$IOS_TOOLCHAIN_BASE/$TARGET/usr
</source>
</syntaxhighlight>
Replace ''ios7'' with ''iphone'' if you want to build the older version of our iOS backend.
Replace ''ios7'' with ''iphone'' if you want to build the older version of our iOS backend.


=== Compilation ===
=== Compilation ===


You can simple compile ScummVM with running make:
You can compile ScummVM with running make:
<source lang="bash">
<syntaxhighlight lang="bash">
make iphone
make iphone
</source>
</syntaxhighlight>
If you simply want to test whether changes you made compile but do not plan to use the binary for deployment you can also simply run ''make''.
If you simply want to test whether changes you made compile but do not plan to use the binary for deployment you can also simply run ''make''.


Please note that if you want to deploy ScummVM on your iOS device you will need to generate a bundle file. For this run either:
Please note that if you want to deploy ScummVM on your iOS device you will need to generate a bundle file. For this run either:
<source lang="bash">
<syntaxhighlight lang="bash">
make ios7bundle
make ios7bundle
</source>
</syntaxhighlight>
for the ''ios7'' backend. Or
for the ''ios7'' backend. Or
<source lang="bash">
<syntaxhighlight lang="bash">
make iphonebundle
make iphonebundle
</source>
</syntaxhighlight>
for the ''iphone'' backend.
for the ''iphone'' backend.


Then simply upload the whole ScummVM.app directory to your device under the /Applications folder, and you're done!
Then simply upload the whole ScummVM.app directory to your device under the /Applications folder, and you're done!

Latest revision as of 04:27, 16 January 2021

This page explains how to compile your own version of ScummVM for iOS based devices (iPhone/iPad). See also Compiling ScummVM/macOS.

Using Xcode

You can compile ScummVM with the official tools from Apple. For more information, see the iOS page in the user documentation.

Using the command line

For jailbroken devices, it is also possible to compile the project from command line. You'll need a working toolchain, and some tools, like ldid, to fake the code signature.

Here is a script to download, and compile all the required tools. This script has been wrote for Debian 8.2, and should be run as root.

#!/bin/bash

if [ $UID -ne 0 ]; then
	echo "This script should be run by the root user"
	exit 1
fi

# Install the Clang compiler
apt-get install -y clang-3.4 libclang-3.4-dev llvm-3.4 libtool bison flex automake subversion git pkg-config wget libssl-dev uuid-dev libxml2-dev || exit 1

# Add LLVM to the linker library path
echo /usr/lib/llvm-3.4/lib > /etc/ld.so.conf.d/libllvm-3.4.conf
ldconfig

# Add symlinks for the LLVM headers
ln -s /usr/lib/llvm-3.4/bin/llvm-config /usr/bin/llvm-config || exit 1
ln -s /usr/include/llvm-3.4/llvm /usr/include/llvm || exit 1
ln -s /usr/include/llvm-c-3.4/llvm-c /usr/include/llvm-c || exit 1
ln -s /usr/bin/clang-3.4 /usr/bin/clang || exit 1
ln -s /usr/bin/clang++-3.4 /usr/bin/clang++ || exit 1

# Build the linker
svn checkout http://ios-toolchain-based-on-clang-for-linux.googlecode.com/svn/trunk/cctools-porting || exit 1
cd cctools-porting
sed -i'' 's/proz -k=20  --no-curses/wget/g' cctools-ld64.sh
./cctools-ld64.sh || exit 1

cd cctools-855-ld64-236.3
./autogen.sh || exit 1
./configure --prefix=/usr/local --target=arm-apple-darwin11 || exit 1
make || exit 1
make install || exit 1
cd ../..

# Install ios-tools
wget https://ios-toolchain-based-on-clang-for-linux.googlecode.com/files/iphonesdk-utils-2.0.tar.gz || exit 1
tar xzf iphonesdk-utils-2.0.tar.gz
cd iphonesdk-utils-2.0
patch -p0 <<_EOF
*** genLocalization2/getLocalizedStringFromFile.cpp    2015-04-02 04:45:39.309837816 +0530
--- genLocalization2/getLocalizedStringFromFile.cpp    2015-04-02 04:45:11.525700021 +0530
***************
*** 113,115 ****
      clang::HeaderSearch headerSearch(headerSearchOptions,
-                                      fileManager,
                                       *pDiagnosticsEngine,
--- 113,115 ----
      clang::HeaderSearch headerSearch(headerSearchOptions,
+                                      sourceManager,
                                       *pDiagnosticsEngine,
***************
*** 129,134 ****
                  false);
-     clang::HeaderSearch headerSearch(fileManager,
                                       *pDiagnosticsEngine,
                                       languageOptions,
-                                      pTargetInfo);
      ApplyHeaderSearchOptions(headerSearch, headerSearchOptions, languageOptions, pTargetInfo->getTriple());
--- 129,134 ----
                  false);
+     clang::HeaderSearch headerSearch(fileManager);/*,
                                       *pDiagnosticsEngine,
                                       languageOptions,
+                                      pTargetInfo);*/
      ApplyHeaderSearchOptions(headerSearch, headerSearchOptions, languageOptio
_EOF

./autogen.sh || exit 1
CC=clang CXX=clang++ ./configure --prefix=/usr/local || exit 1
make || exit 1
make install || exit 1

# Install the iOS SDK 8.1
mkdir -p /usr/share/ios-sdk
cd /usr/share/ios-sdk
wget http://iphone.howett.net/sdks/dl/iPhoneOS8.1.sdk.tbz2 || exit 1
tar xjf iPhoneOS8.1.sdk.tbz2
rm iPhoneOS8.1.sdk.tbz2

Now, in order to compile ScummVM, execute the following commands:

export SDKROOT=/usr/share/ios-sdk/iPhoneOS8.1.sdk
export CC=ios-clang
export CXX=ios-clang++
./configure --host=ios7 --disable-mt32emu --enable-release
make ios7bundle

At the end of the compilation, you'll find a ScummVM.app application: copy it over SSH, and reboot your device.

Cross-Compilation

Please note binaries generated with these instructions only work with jailbroken devices.

Toolchain Setup

Toolchain

First you need to set up a toolchain for cross-compilation. On our buildbot we use this toolchain. It is based on LLVM/Clang and contains instructions on how to set it up.

External libs

In the previously linked toolchain a script to compile all libraries used by the iOS version of ScummVM is contained. Please refer to the toolchain's README file on how to build them.

Building ScummVM

Configuration

Before we can compile ScummVM we need to configure the source tree for building. This is usually only required once or when you want to alter build options.

Choosing an iOS target

We feature two different iOS backends:

  • iphone: Our legacy iOS backend, which supports all iOS3+ devices.
  • ios7: Our modern iOS7+ backend, which only supports iOS7+ devices but features better integration for these.

Depending on which backend you use you will need to use a different value for the TARGET environment variable.

  • For iphone use:
export TARGET=arm-apple-darwin9
  • For ios7 use:
export TARGET=arm-apple-darwin11

Setting up the Environment

export PATH="$IOS_TOOLCHAIN_BASE/bin:$IOS_TOOLCHAIN_BASE/$TARGET/bin:$IOS_TOOLCHAIN_BASE/$TARGET/usr/bin:$PATH"
export CPPFLAGS="-isystem $IOS_TOOLCHAIN_BASE/$TARGET/usr/include"
export LDFLAGS="-L$IOS_TOOLCHAIN_BASE/$TARGET/usr/lib"

Where IOS_TOOLCHAIN_BASE contains the directory where you installed the toolchain. And TRAGET has been setup from the previous step.

NOTE: If you quit the shell you are using when configuring ScummVM and pick up compilation later, you will need to re-export only the PATH variable like described above.

Configuring the Build

Then configure ScummVM for the iOS version you want to target.

First, navigate to a path where you want your build files to be located (this can be the ScummVM root directory but does not have to be). Then run the following:

./path/to/scummvm/configure --host=ios7 --with-staticlib-prefix=$IOS_TOOLCHAIN_BASE/$TARGET/usr

Replace ios7 with iphone if you want to build the older version of our iOS backend.

Compilation

You can compile ScummVM with running make:

make iphone

If you simply want to test whether changes you made compile but do not plan to use the binary for deployment you can also simply run make.

Please note that if you want to deploy ScummVM on your iOS device you will need to generate a bundle file. For this run either:

make ios7bundle

for the ios7 backend. Or

make iphonebundle

for the iphone backend.

Then simply upload the whole ScummVM.app directory to your device under the /Applications folder, and you're done!