[PULL,for-5.0,04/10] configure: Always detect -no-pie toolchain support

Message ID 20200331035456.6494-6-richard.henderson@linaro.org
State Accepted
Commit b26341241bbfe9cc126479a0dbed5d40d547f242
Headers show
Series
  • tcg patch queue
Related show

Commit Message

Richard Henderson March 31, 2020, 3:54 a.m.
The CFLAGS_NOPIE and LDFLAGS_NOPIE variables are used
in pc-bios/optionrom/Makefile, which has nothing to do
with the PIE setting of the main qemu executables.

This overrides any operating system default to build
all executables as PIE, which is important for ROMs.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Reviewed-by: Thomas Huth <thuth@redhat.com>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 configure | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

-- 
2.20.1

Patch

diff --git a/configure b/configure
index d4c2c7a563..1cdc439a57 100755
--- a/configure
+++ b/configure
@@ -2107,26 +2107,24 @@  if ! compile_prog "-Werror" "" ; then
 	"Thread-Local Storage (TLS). Please upgrade to a version that does."
 fi
 
-if test "$pie" != "no" ; then
-  cat > $TMPC << EOF
+cat > $TMPC << EOF
 
 #ifdef __linux__
 #  define THREAD __thread
 #else
 #  define THREAD
 #endif
-
 static THREAD int tls_var;
-
 int main(void) { return tls_var; }
-
 EOF
-  # check we support --no-pie first...
-  if compile_prog "-Werror -fno-pie" "-no-pie"; then
-    CFLAGS_NOPIE="-fno-pie"
-    LDFLAGS_NOPIE="-nopie"
-  fi
 
+# Check we support --no-pie first; we will need this for building ROMs.
+if compile_prog "-Werror -fno-pie" "-no-pie"; then
+  CFLAGS_NOPIE="-fno-pie"
+  LDFLAGS_NOPIE="-no-pie"
+fi
+
+if test "$pie" != "no" ; then
   if compile_prog "-fPIE -DPIE" "-pie"; then
     QEMU_CFLAGS="-fPIE -DPIE $QEMU_CFLAGS"
     QEMU_LDFLAGS="-pie $QEMU_LDFLAGS"