ios-toolchain: take care of IPHONEOS_DEPLOYMENT_TARGET (env)

tpoechtrager · Dec 28, 2014 · 3d19853 · 3d19853
1 parent 23658f2
commit 3d19853
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diff --git a/usage_examples/ios_toolchain/README b/usage_examples/ios_toolchain/README
@@ -13,3 +13,13 @@ arm-apple-darwin11-*
 
 You can then use arm-apple-darwin11-clang / arm apple-darwin11-clang++
 to build your applications.
+
+---
+
+IPHONEOS_DEPLOYMENT_TARGET can be used to target older iOS versions.
+
+For example:
+
+export IPHONEOS_DEPLOYMENT_TARGET=5.0
+
+will target iOS 5.0.
diff --git a/usage_examples/ios_toolchain/wrapper.c b/usage_examples/ios_toolchain/wrapper.c
@@ -76,12 +76,14 @@ int main(int argc, char *argv[])
     char execpath[PATH_MAX+1];
     char sdkpath[PATH_MAX+1];
     char codesign_allocate[64];
+    char osvermin[64];
 
     char *compiler;
     char *target;
 
     char *sdk;
     char *cpu;
+    char *osmin;
 
     target_info(argv, &target, &compiler);
     if (!get_executable_path(execpath, sizeof(execpath))) abort();
@@ -96,6 +98,11 @@ int main(int argc, char *argv[])
     env(&sdk, "IOS_SDK_SYSROOT", sdkpath);
     env(&cpu, "IOS_TARGET_CPU", TARGET_CPU);
 
+    env(&osmin, "IPHONEOS_DEPLOYMENT_TARGET", OS_VER_MIN);
+    unsetenv("IPHONEOS_DEPLOYMENT_TARGET");
+
+    snprintf(osvermin, sizeof(osvermin), "-miphoneos-version-min=%s", osmin);
+
     for (i = 1; i < argc; ++i)
     {
         if (!strcmp(argv[i], "-arch"))
@@ -119,7 +126,7 @@ int main(int argc, char *argv[])
         args[i++] = cpu;
     }
 
-    args[i++] = "-miphoneos-version-min=" OS_VER_MIN;
+    args[i++] = osvermin;
     args[i++] = "-mlinker-version=241.9";
 
     for (j = 1; j < argc; ++i, ++j)