Slim down static binaries by avoiding stdio.
It's okay for a program to choose to drag in stdio, but it's unfortunate
if even the minimal "int main() { return 42; }" drags in stdio...
This brings the minimal static binary on ARM down from 78KiB to 46KiB.
Given that we don't have a separate -lpthread it's not obvious to me that
we can shave this down any further. I'm not sure whether this is a worthwhile
change for that reason. (And the fact that dynamic binaries, the usual case,
are unaffected either way.)
Change-Id: I02f91dcff37d14354314a30b72fed2563f431c88
diff --git a/libc/bionic/stubs.cpp b/libc/bionic/stubs.cpp
index 9b025df..0937e9c 100644
--- a/libc/bionic/stubs.cpp
+++ b/libc/bionic/stubs.cpp
@@ -469,5 +469,6 @@
// Portable code should use sysconf(_SC_PAGE_SIZE) directly instead.
int getpagesize() {
- return sysconf(_SC_PAGE_SIZE);
+ // We dont use sysconf(3) here because that drags in stdio, which makes static binaries fat.
+ return PAGE_SIZE;
}