make sigaction/raise/sigwait/siglongjmp/longjmp weak_alias, these are in libpthread as well

libc/signal/raise.c

@@ -8,13 +8,14 @@
 #include <signal.h>
 #include <sys/types.h>
 
-libc_hidden_proto(raise)
 
 libc_hidden_proto(getpid)
 libc_hidden_proto(kill)
 
-int raise(int signo)
+int attribute_hidden __raise(int signo)
 {
     return kill(getpid(), signo);
 }
+libc_hidden_proto(raise)
+weak_alias(__raise,raise)
 libc_hidden_def(raise)

libc/signal/sigaction.c

@@ -105,6 +105,6 @@ __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
 
 #ifndef LIBC_SIGACTION
 libc_hidden_proto(sigaction)
-strong_alias(__libc_sigaction,sigaction)
+weak_alias(__libc_sigaction,sigaction)
 libc_hidden_def(sigaction)
 #endif

libc/signal/sigwait.c

@@ -24,8 +24,7 @@
 
 libc_hidden_proto(sigwaitinfo)
 
-libc_hidden_proto(sigwait)
-int sigwait (const sigset_t *set, int *sig)
+int attribute_hidden __sigwait (const sigset_t *set, int *sig)
 {
 	int ret = 1;
 	if ((ret = sigwaitinfo(set, NULL)) != -1) {
@@ -34,4 +33,6 @@ int sigwait (const sigset_t *set, int *sig)
 	}
 	return 1;
 }
+libc_hidden_proto(sigwait)
+weak_alias(__sigwait,sigwait)
 libc_hidden_def(sigwait)

libc/sysdeps/linux/arm/sigaction.c

@@ -127,6 +127,6 @@ int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oa
 
 #ifndef LIBC_SIGACTION
 libc_hidden_proto(sigaction)
-strong_alias(__libc_sigaction,sigaction)
+weak_alias(__libc_sigaction,sigaction)
 libc_hidden_def(sigaction)
 #endif

libc/sysdeps/linux/i386/sigaction.c

@@ -124,7 +124,7 @@ int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oa
 
 #ifndef LIBC_SIGACTION
 libc_hidden_proto(sigaction)
-strong_alias(__libc_sigaction,sigaction)
+weak_alias(__libc_sigaction,sigaction)
 libc_hidden_def(sigaction)
 #endif
 

libc/sysdeps/linux/mips/sigaction.c

@@ -115,6 +115,6 @@ int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oa
 
 #ifndef LIBC_SIGACTION
 libc_hidden_proto(sigaction)
-strong_alias(__libc_sigaction,sigaction)
+weak_alias(__libc_sigaction,sigaction)
 libc_hidden_def(sigaction)
 #endif

libc/sysdeps/linux/x86_64/sigaction.c

@@ -119,7 +119,7 @@ __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
 
 #ifndef LIBC_SIGACTION
 libc_hidden_proto(sigaction)
-strong_alias(__libc_sigaction,sigaction)
+weak_alias(__libc_sigaction,sigaction)
 libc_hidden_def(sigaction)
 #endif