updated cmake and removed double negative

Author: Sriya Pratipati

libc/src/__support/OSUtil/linux/CMakeLists.txt

@@ -12,7 +12,6 @@ add_object_library(
   HDRS
     io.h
     syscall.h
-    getrandom.h
   DEPENDS
     .${LIBC_TARGET_ARCHITECTURE}.linux_${LIBC_TARGET_ARCHITECTURE}_util
     libc.src.__support.common
@@ -25,6 +24,19 @@ add_object_library(
     libc.include.sys_syscall
 )
 
+add_header_library(
+  getrandom
+  HDRS
+    getrandom.h
+  DEPENDS
+    libc.src.__support.OSUtil.linux.syscall
+    libc.src.__support.common
+    libc.src.__support.error_or
+    libc.src.__support.macros.config.h
+    libc.hdr.types.ssize_t
+    libc.include.sys_syscall
+)
+
 add_header_library(
   vdso_sym
   HDRS

libc/src/sys/random/linux/getrandom.cpp

@@ -12,7 +12,6 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 #include "src/__support/error_or.h"
-
 #include "src/__support/libc_errno.h"
 #include "src/__support/macros/config.h"
 #include <sys/syscall.h> // For syscall numbers.
@@ -24,7 +23,7 @@ LLVM_LIBC_FUNCTION(ssize_t, getrandom,
   auto rand = internal::getrandom(buf, buflen, flags);
   if (rand.has_value())
     return rand.value();
-  libc_errno = static_cast<int>(-(rand.error()));
+  libc_errno = static_cast<int>(rand.error());
   return -1;
 }