diff --git a/lib9/Makefile b/lib9/Makefile
index b83ab2b..2836b38 100644
--- a/lib9/Makefile
+++ b/lib9/Makefile
@@ -145,7 +145,7 @@ LIB9OFILES=\
 	exitcode.o\
 	fcallfmt.o\
 	get9root.o\
-	getcallerpc-$(OBJTYPE).o\
+	getcallerpc.o\
 	getenv.o\
 	getfields.o\
 	getnetconn.o\
diff --git a/lib9/getcallerpc-386.c b/lib9/getcallerpc-386.c
deleted file mode 100644
index 1367370..0000000
--- a/lib9/getcallerpc-386.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <lib9.h>
-
-ulong
-getcallerpc(void *x)
-{
-	return (((ulong*)(x))[-1]);
-}
diff --git a/lib9/getcallerpc-PowerMacintosh.c b/lib9/getcallerpc-PowerMacintosh.c
deleted file mode 100644
index 679a72c..0000000
--- a/lib9/getcallerpc-PowerMacintosh.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <lib9.h>
-
-ulong
-getcallerpc(void *x)
-{
-	return (((ulong*)(x))[-4]);
-}
diff --git a/lib9/getcallerpc-arm.c b/lib9/getcallerpc-arm.c
deleted file mode 100644
index 9bb4a95..0000000
--- a/lib9/getcallerpc-arm.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <lib9.h>
-
-ulong
-getcallerpc(void *x)
-{
-	return ((ulong*)x)[-2];
-}
-
diff --git a/lib9/getcallerpc-power.c b/lib9/getcallerpc-power.c
deleted file mode 100644
index b4bf698..0000000
--- a/lib9/getcallerpc-power.c
+++ /dev/null
@@ -1,11 +0,0 @@
-#include <lib9.h>
-
-ulong
-getcallerpc(void *x)
-{
-	ulong *lp;
-
-	lp = x;
-
-	return lp[-1];
-}
diff --git a/lib9/getcallerpc-ppc.c b/lib9/getcallerpc-ppc.c
deleted file mode 100644
index 679a72c..0000000
--- a/lib9/getcallerpc-ppc.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <lib9.h>
-
-ulong
-getcallerpc(void *x)
-{
-	return (((ulong*)(x))[-4]);
-}
diff --git a/lib9/getcallerpc-x86_64.c b/lib9/getcallerpc-x86_64.c
deleted file mode 100644
index 1367370..0000000
--- a/lib9/getcallerpc-x86_64.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <lib9.h>
-
-ulong
-getcallerpc(void *x)
-{
-	return (((ulong*)(x))[-1]);
-}
diff --git a/lib9/getcallerpc.c b/lib9/getcallerpc.c
new file mode 100644
index 0000000..7d2cdd7
--- /dev/null
+++ b/lib9/getcallerpc.c
@@ -0,0 +1,12 @@
+#include <lib9.h>
+
+/*
+ * On gcc and clang, getcallerpc is a macro invoking a compiler builtin.
+ * If the macro in libc.h did not trigger, there's no implementation.
+ */
+#undef getcallerpc
+ulong
+getcallerpc(void *v)
+{
+	return 1;
+}
\ No newline at end of file