X-Git-Url: https://git.distorted.org.uk/~mdw/termux-packages/blobdiff_plain/20730a0d24a0d79deae690536bf7fccc2a5e1de7..506ef46baeadc6f10456f75599e59ffce859d626:/README.md

diff --git a/README.md b/README.md
index c1386be7..f247a847 100644
--- a/README.md
+++ b/README.md
@@ -70,7 +70,7 @@ Additional utilities
 ====================
 * build-all.sh: used for building all packages in the correct order (using buildorder.py).
 
-* clean-rebuild-all.sh: used for doing a clean rebuild of all packages.
+* clean.sh: used for doing a clean rebuild of all packages.
 
 * scripts/check-pie.sh: Used for verifying that all binaries are using PIE, which is required for Android 5+.
 
@@ -122,6 +122,10 @@ Common porting problems
 * mempcpy(3) is a GNU extension. We have added it to <string.h> provided TERMUX_EXPOSE_MEMPCPY is defined,
   so use something like CFLAGS+=" -DTERMUX_EXPOSE_MEMPCPY=1" for packages expecting that function to exist.
 
+* Android uses a customized version of shared memory managemnt known as ashmem. Standard shm and semaphore libc
+  wrappers (semget(2), shmat(2) and others) aren't available. Direct syscalls can be used with
+  `CFLAGS+=" -DTERMUX_SHMEM_STUBS=1 -DTERMUX_SEMOPS_STUBS=1"`.
+
 dlopen() and RTLD_* flags
 =================================
 <dlfcn.h> originally declares