move submodules in-tree

blog/helpers/elf-linkage/testing/a.c

@@ -0,0 +1,4 @@
+void dependency();
+int main() {
+  dependency();
+}

blog/helpers/elf-linkage/testing/b.c

@@ -0,0 +1 @@
+void dependency() {}

blog/helpers/elf-linkage/testing/multi/Makefile

@@ -0,0 +1,16 @@
+main: multia.c libmultib.a libmultic.a libmultib.so libmultic.so
+	cc multia.c -L. -Bdynamic -lmultib -lmultic -fuse-ld=lld
+
+libmultib.so: multib.c
+	cc -fPIC multib.c -shared -o libmultib.so
+
+libmultic.so: multic.c
+	cc -fPIC multic.c -shared -o libmultic.so
+
+libmultib.a: multib.c
+	cc -c multib.c
+	ar -rcs libmultib.a multib.o
+
+libmultic.a: multic.c
+	cc -c multic.c
+	ar -rcs libmultic.a multic.o

blog/helpers/elf-linkage/testing/multi/multia.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+void conflict();
+void usec();
+void useb();
+int main() {
+  usec();
+  useb();
+  conflict();
+}

blog/helpers/elf-linkage/testing/multi/multib.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+__attribute__((weak))
+void conflict() {
+    puts("b");
+}
+void useb(){}

blog/helpers/elf-linkage/testing/multi/multic.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+void conflict() {
+    puts("C");
+
+}
+
+void usec(){
+}