Start the iOS cross compile

The build.sh and readme files are the same as the Android ones
and I'll be changing them over time.

The configure-for-ios.sh script is a file that manages to set
everything, compilers frameworks and such, for iOS compilation.

I'll probably dissecate the configure-for-ios.sh file and put it
back on the build.sh, but not now.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 106 insertions, 0 deletions

diff --git a/packaging/ios/configure-for-ios.sh b/packaging/ios/configure-for-ios.sh
new file mode 100755
index 000000000..1624bc391
--- /dev/null
+++ b/packaging/ios/configure-for-ios.sh
@@ -0,0 +1,106 @@
+#!/bin/sh
+set -e
+
+usage () {
+  echo "Usage: [VARIABLE...] $(basename $0) architecture"
+  echo ""
+  echo "  architecture   Target architecture. [armv7|armv7s|arm64|i386|x86_64]"
+  echo ""
+  echo "  VARIABLEs are:"
+  echo "    SDKVERSION   Target a specific SDK version."
+  echo "    PREFIX       Custom install prefix, useful for local installs."
+  echo "    CHOST        Configure host, set if not deducable by ARCH."
+  echo "    SDK          SDK target, set if not deducable by ARCH. [iphoneos|iphonesimulator]"
+  echo ""
+  echo "    CFLAGS CPPFLAGS CXXFLAGS LDFLAGS PKG_CONFIG_PATH"
+  echo ""
+  echo "  All additional parameters are passed to the configure script."
+  exit 1
+}
+
+# Sanity checks
+if [ "$#" -lt 1 ]; then
+  echo "Please supply an architecture name."
+  usage
+fi
+
+if [ ! -x "./configure" ] ; then
+  echo "No configure script found."
+  usage
+fi
+
+# Build architecture
+export ARCH=$1
+
+# Export supplied CHOST or deduce by ARCH
+if [ ! -z "$CHOST" ]; then
+  export CHOST
+else
+  case $ARCH in
+    armv7 | armv7s )
+      export CHOST=arm-apple-darwin*
+      ;;
+    arm64 )
+      export CHOST=aarch64-apple-darwin*
+      ;;
+    i386 | x86_64 )
+      export CHOST=$ARCH-apple-darwin*
+      ;;
+    * )
+      usage
+    ;;
+  esac
+fi
+
+# Export supplied SDK or deduce by ARCH
+if [ ! -z "$SDK" ]; then
+  export SDK
+else
+  case $ARCH in
+    armv7 | armv7s | arm64 )
+      export SDK=iphoneos
+      ;;
+    i386 | x86_64 )
+      export SDK=iphonesimulator
+      ;;
+    * )
+      usage
+    ;;
+  esac
+fi
+
+# Export supplied SDKVERSION or use system default
+if [ ! -z "$SDKVERSION" ]; then
+  SDKNAME=$(basename $(xcrun --sdk $SDK --show-sdk-platform-path) .platform)
+  export SDKVERSION
+  export SDKROOT=$(xcrun --sdk $SDK --show-sdk-platform-path)"/Developer/SDKs/$SDKNAME.$SDKVERSION.sdk"
+else
+  export SDKVERSION=$(xcrun --sdk $SDK --show-sdk-version) # current version
+  export SDKROOT=$(xcrun --sdk $SDK --show-sdk-path) # current version
+fi
+
+export PREFIX
+
+# Binaries
+export CC=$(xcrun --sdk $SDK --find gcc)
+export CPP=$(xcrun --sdk $SDK --find gcc)" -E"
+export CXX=$(xcrun --sdk $SDK --find g++)
+export LD=$(xcrun --sdk $SDK --find ld)
+
+# Flags
+export CFLAGS="$CFLAGS -arch $ARCH -isysroot $SDKROOT -I$PREFIX/include -miphoneos-version-min=$SDKVERSION"
+export CPPFLAGS="$CPPFLAGS -arch $ARCH -isysroot $SDKROOT -I$PREFIX/include -miphoneos-version-min=$SDKVERSION"
+export CXXFLAGS="$CXXFLAGS -arch $ARCH -isysroot $SDKROOT -I$PREFIX/include"
+export LDFLAGS="$LDFLAGS -arch $ARCH -isysroot $SDKROOT -L$PREFIX/lib"
+export PKG_CONFIG_PATH="$PKG_CONFIG_PATH":"$SDKROOT/usr/lib/pkgconfig":"$PREFIX/lib/pkgconfig"
+
+# Remove script parameters
+shift 1
+
+# Run configure
+./configure \
+	--prefix="$PREFIX" \
+	--host="$CHOST" \
+	--enable-static \
+	--disable-shared \
+	$@