Update README.osx

facebook · Mar 25, 2013 · b798cac · b798cac
1 parent 29d6946
commit b798cac
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/folly/README.osx b/folly/README.osx
@@ -12,3 +12,17 @@ In addition to the dependencies listed in the README file, the following would b
 		# make
 		# make install
 
+Major source changes
+--------------------
+Most Macs come with a case insensitive file system. This causes issue with String.h in folly. As a 
+temporary fix, it has been renamed as FollyString.h to prevent it from interfering with standard headers.
+Besides this, the following linux/gcc-isms have been modified to enable compilation on OSX,
+
+1. byteswap.h is auto generated on compile, when the system doesn't have one.
+2. Added boost system and gnulib m4 macros
+3. OSX does not have clock_getres and clock_gettime functions. Created these as wrappers around mach time 
+   kernel interfaces.
+4. Handled the case where the POPCNT instruction is not present for the processor architecture and gnu 
+   indirect functions are not supported.
+5. Handled the __GNU_PREREQ missing case with a locally defined macro.
+