libtool: link: g++ -shared test-a.o test-b.o test-b.o test-c.o -O2 -pie -Wl,relro -Wl,now -o test.so
libtool: link: g++ -shared test-a.o test-b.o test-b.o test-c.o -O2 -Wl,relro -o test.so

libtool: link: gcc -Wl,-z -Wl,relro -o test test.o
/bin/bash ../libtool --tag=CC --mode=link gcc -Wl,-z,relro -o test.so test.o
/bin/bash ../libtool --tag=CC   --mode=link gcc -Wl,-z,relro -o test.so test.o
  /bin/bash ../libtool --tag=CC   --mode=link gcc -Wl,-z,relro -o test.so test.o

# Just to be sure, libtool won't do this. Note the test.c.
/bin/bash ../libtool --tag=CC   --mode=link gcc -Wl,-z,relro -o test.so test.c

libtool: install: /usr/bin/install -c ...
/bin/bash ../../libtool --mode=install /usr/bin/install -c ...
  /bin/bash ../../libtool   --mode=install /usr/bin/install -c  ...
    /bin/bash ../../../libtool   --mode=install /usr/bin/install -c  ...