Make executables position-independent

Pass -pie to the linker

before:
ruben@yourmomma: pdns (master %=)$ checksec --file pdns/pdns_server
RELRO           STACK CANARY      NX            PIE             RPATH      RUNPATH      FILE
Full RELRO     Canary found     NX enabled   No PIE         No RPATH   No RUNPATH   pdns/pdns_server
ruben@yourmomma: pdns (master %=)$ checksec --file pdns/pdns_control
RELRO           STACK CANARY      NX            PIE             RPATH      RUNPATH      FILE
Full RELRO     Canary found     NX enabled   No PIE         No RPATH   No RUNPATH   pdns/pdns_control

after:
ruben@yourmomma: pdns (master *%=)$ checksec --file pdns/pdns_control
RELRO           STACK CANARY      NX            PIE             RPATH      RUNPATH      FILE
Full RELRO     Canary found     NX enabled   PIE enabled    No RPATH   No RUNPATH   pdns/pdns_control
ruben@yourmomma: pdns (master *%=)$ checksec --file pdns/pdns_server
RELRO           STACK CANARY      NX            PIE             RPATH      RUNPATH      FILE
Full RELRO     Canary found     NX enabled   PIE enabled    No RPATH   No RUNPATH   pdns/pdns_server

diff --git a/configure.ac b/configure.ac
index d43b6af4260c8ded96ff2bd4efb3325b86242136..7f684d31b08bdfd6d06f8a2e5e977ce8902146f5 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -320,7 +320,7 @@ done
 
 CFLAGS="$PIE_CFLAGS $CFLAGS"
 CXXFLAGS="$PIE_CFLAGS $CXXFLAGS"
-LDFLAGS="$RELRO_LDFLAGS $LDFLAGS"
+LDFLAGS="$PIE_LDFLAGS $RELRO_LDFLAGS $LDFLAGS"
 
 AC_SUBST(LIBS)