diff options
| author | Jessica Clarke <jrtc27@jrtc27.com> | 2021-08-05 20:25:45 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-11-02 15:57:20 +0100 |
| commit | ffd205ef2901bd65fcfbd09a98c0ff7cfcec5e4d (patch) | |
| tree | e0495b37320d4013291480d1ae187e01fdfa3857 /configure | |
| parent | af7d106e3e57e0526d571063096e2ba3d7e6ab8a (diff) | |
Partially revert "build: -no-pie is no functional linker flag"
This partially reverts commit bbd2d5a8120771ec59b86a80a1f51884e0a26e53.
This commit was misguided and broke using --disable-pie on any distro
that enables PIE by default in their compiler driver, including Debian
and its derivatives. Whilst -no-pie is not a linker flag, it is a
compiler driver flag that ensures -pie is not automatically passed by it
to the linker. Without it, all compile_prog checks will fail as any code
built with the explicit -fno-pie will fail to link with the implicit
default -pie due to trying to use position-dependent relocations. The
only bug that needed fixing was LDFLAGS_NOPIE being used as a flag for
the linker itself in pc-bios/optionrom/Makefile.
Note this does not reinstate exporting LDFLAGS_NOPIE, as it is unused,
since the only previous use was the one that should not have existed. I
have also updated the comment for the -fno-pie and -no-pie checks to
reflect what they're actually needed for.
Fixes: bbd2d5a8120771ec59b86a80a1f51884e0a26e53
Cc: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Jessica Clarke <jrtc27@jrtc27.com>
Message-Id: <20210805192545.38279-1-jrtc27@jrtc27.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 5 |
1 files changed, 4 insertions, 1 deletions
@@ -1771,9 +1771,11 @@ static THREAD int tls_var; int main(void) { return tls_var; } EOF -# Check we support --no-pie first; we will need this for building ROMs. +# Check we support -fno-pie and -no-pie first; we will need the former for +# building ROMs, and both for everything if --disable-pie is passed. if compile_prog "-Werror -fno-pie" "-no-pie"; then CFLAGS_NOPIE="-fno-pie" + LDFLAGS_NOPIE="-no-pie" fi if test "$static" = "yes"; then @@ -1789,6 +1791,7 @@ if test "$static" = "yes"; then fi elif test "$pie" = "no"; then CONFIGURE_CFLAGS="$CFLAGS_NOPIE $CONFIGURE_CFLAGS" + CONFIGURE_LDFLAGS="$LDFLAGS_NOPIE $CONFIGURE_LDFLAGS" elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS" CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS" |