[build][ios] Move iOS specific ccache scripts to platform directory

4 files changed, 46 insertions, 0 deletions

diff --git a/platform/ios/ccache-c.in b/platform/ios/ccache-c.in
new file mode 100644
index 0000000000..f75d456e5d
--- /dev/null
+++ b/platform/ios/ccache-c.in
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+# Xcode generator doesn't include the compiler as the
+# first argument, Ninja and Makefiles do. Handle both cases.
+if [[ "$1" = "${CMAKE_C_COMPILER}" ]] ; then
+    shift
+fi
+
+exec "${C_LAUNCHER}" "${CMAKE_C_COMPILER}" "$@"
diff --git a/platform/ios/ccache-cxx.in b/platform/ios/ccache-cxx.in
new file mode 100644
index 0000000000..81831ad4dc
--- /dev/null
+++ b/platform/ios/ccache-cxx.in
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+# Xcode generator doesn't include the compiler as the
+# first argument, Ninja and Makefiles do. Handle both cases.
+if [[ "$1" = "${CMAKE_CXX_COMPILER}" ]] ; then
+    shift
+fi
+
+exec "${CXX_LAUNCHER}" "${CMAKE_CXX_COMPILER}" "$@"
diff --git a/platform/ios/ccache.cmake b/platform/ios/ccache.cmake
new file mode 100644
index 0000000000..cedf062a16
--- /dev/null
+++ b/platform/ios/ccache.cmake
@@ -0,0 +1,27 @@
+find_program(CCACHE_PROGRAM ccache)
+if(CCACHE_PROGRAM)
+    # Set up wrapper scripts
+    set(C_LAUNCHER "${CCACHE_PROGRAM}")
+    set(CXX_LAUNCHER "${CCACHE_PROGRAM}")
+    configure_file(${PROJECT_SOURCE_DIR}/platform/ios/ccache-c.in ccache-c)
+    configure_file(${PROJECT_SOURCE_DIR}/platform/ios/ccache-cxx.in ccache-cxx)
+    execute_process(
+        COMMAND
+            chmod
+            a+rx
+            "${CMAKE_BINARY_DIR}/ccache-c"
+            "${CMAKE_BINARY_DIR}/ccache-cxx"
+    )
+
+    if(CMAKE_GENERATOR STREQUAL "Xcode")
+        # Set Xcode project attributes to route compilation and linking through our scripts
+        set(CMAKE_XCODE_ATTRIBUTE_CC "${CMAKE_BINARY_DIR}/ccache-c")
+        set(CMAKE_XCODE_ATTRIBUTE_CXX "${CMAKE_BINARY_DIR}/ccache-cxx")
+        set(CMAKE_XCODE_ATTRIBUTE_LD "${CMAKE_BINARY_DIR}/ccache-c")
+        set(CMAKE_XCODE_ATTRIBUTE_LDPLUSPLUS "${CMAKE_BINARY_DIR}/ccache-cxx")
+    else()
+        # Support Unix Makefiles and Ninja
+        set(CMAKE_C_COMPILER_LAUNCHER "${CMAKE_BINARY_DIR}/ccache-c")
+        set(CMAKE_CXX_COMPILER_LAUNCHER "${CMAKE_BINARY_DIR}/ccache-cxx")
+    endif()
+endif()
diff --git a/platform/ios/ios.cmake b/platform/ios/ios.cmake
index 3b86353558..7e9db575ab 100644
--- a/platform/ios/ios.cmake
+++ b/platform/ios/ios.cmake
@@ -76,6 +76,7 @@ target_include_directories(
 )
 
 include(${PROJECT_SOURCE_DIR}/vendor/icu.cmake)
+include(${PROJECT_SOURCE_DIR}/platform/ios/ccache.cmake)
 
 initialize_ios_target(mbgl-core)
 initialize_ios_target(mbgl-vendor-icu)