From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: philmd@redhat.com, Thomas Huth <thuth@redhat.com>,
i@maskray.me, berrange@redhat.com
Subject: [PATCH v2 4/7] configure: Always detect -no-pie toolchain support
Date: Wed, 18 Dec 2019 12:34:38 -1000 [thread overview]
Message-ID: <20191218223441.23852-5-richard.henderson@linaro.org> (raw)
In-Reply-To: <20191218223441.23852-1-richard.henderson@linaro.org>
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(-)
diff --git a/configure b/configure
index 99faf64a74..7a646ec007 100755
--- a/configure
+++ b/configure
@@ -2018,26 +2018,24 @@ 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"
LDFLAGS="-pie $LDFLAGS"
--
2.20.1
next prev parent reply other threads:[~2019-12-18 22:39 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-18 22:34 [PATCH v2 0/7] configure: Improve PIE and other linkage Richard Henderson
2019-12-18 22:34 ` [PATCH v2 1/7] configure: Drop adjustment of textseg Richard Henderson
2020-01-07 11:34 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 2/7] tcg: Remove softmmu code_gen_buffer fixed address Richard Henderson
2020-01-07 11:35 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 3/7] configure: Do not force pie=no for non-x86 Richard Henderson
2020-01-07 11:37 ` Philippe Mathieu-Daudé
2020-01-07 12:58 ` Alex Bennée
2019-12-18 22:34 ` Richard Henderson [this message]
2020-01-07 13:16 ` [PATCH v2 4/7] configure: Always detect -no-pie toolchain support Alex Bennée
2020-01-08 0:45 ` Richard Henderson
2019-12-18 22:34 ` [PATCH v2 5/7] configure: Unnest detection of -z,relro and -z,now Richard Henderson
2019-12-18 22:46 ` [PATCH v2 5/7] configure: Unnest detection of -z, relro and -z, now Philippe Mathieu-Daudé
2019-12-19 7:11 ` Fangrui Song
2020-01-07 13:18 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 6/7] configure: Override the os default with --disable-pie Richard Henderson
2020-01-07 13:24 ` Alex Bennée
2019-12-18 22:34 ` [PATCH v2 7/7] configure: Support -static-pie if requested Richard Henderson
2020-01-07 13:45 ` Alex Bennée
2020-01-06 2:57 ` [PATCH v2 0/7] configure: Improve PIE and other linkage Richard Henderson
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