Xcode: Add support for combined install on iOS

This patch solves the problem of installing both: Device and Simulator
libraries on iOS. Before only one of them was installed.

If the IOS_INSTALL_COMBINED property is set on a target, a
special install hook will be activated which builds the corresponding
target and combines both at the install location.

The original patch was contributed by Ruslan Baratov, and polished by
Gregor Jasny.

1 files changed, 26 insertions, 0 deletions

diff --git a/Tests/RunCMake/XcodeProject/XcodeIOSInstallCombinedPrune-install-check.cmake b/Tests/RunCMake/XcodeProject/XcodeIOSInstallCombinedPrune-install-check.cmake
new file mode 100644
index 0000000..83da17d
--- /dev/null
+++ b/Tests/RunCMake/XcodeProject/XcodeIOSInstallCombinedPrune-install-check.cmake
@@ -0,0 +1,26 @@
+function(verify_architectures file)
+  execute_process(
+    COMMAND xcrun otool -vf ${RunCMake_TEST_BINARY_DIR}/_install/${file}
+    OUTPUT_VARIABLE otool_out
+    ERROR_VARIABLE otool_err
+    RESULT_VARIABLE otool_result)
+  if(NOT otool_result EQUAL "0")
+    message(SEND_ERROR "Could not retrieve fat headers: ${otool_err}")
+    return()
+  endif()
+
+  string(REGEX MATCHALL "architecture [^ \n\t]+" architectures ${otool_out})
+  string(REPLACE "architecture " "" actual "${architectures}")
+  list(SORT actual)
+
+  set(expected armv7 x86_64)
+
+  if(NOT actual STREQUAL expected)
+    message(SEND_ERROR
+      "The actual library contains the architectures:\n ${actual} \n"
+      "which do not match expected ones:\n ${expected} \n"
+      "otool output:\n${otool_out}")
+  endif()
+endfunction()
+
+verify_architectures(lib/libfoo.dylib)