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configure: Support -static-pie if requested

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Recent toolchains support static and pie at the same time.

As with normal dynamic builds, allow --static to default to PIE
if supported by the toolchain.  Allow --enable/--disable-pie to
override the default.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Fix --disable-pie --static
v3: Update for QEMU_LDFLAGS.
This commit is contained in:
Richard Henderson 2019-12-17 15:30:14 -10:00
parent 2c674109c2
commit 127814629b
1 changed files with 12 additions and 7 deletions
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19
configure vendored
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@ -1067,7 +1067,6 @@ for opt do
;;
--static)
static="yes"
QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
;;
--mandir=*) mandir="$optarg"
@ -2089,11 +2088,6 @@ if test "$static" = "yes" ; then
if test "$modules" = "yes" ; then
error_exit "static and modules are mutually incompatible"
fi
if test "$pie" = "yes" ; then
error_exit "static and pie are mutually incompatible"
else
pie="no"
fi
fi
# Unconditional check for compiler __thread support
@ -2124,7 +2118,18 @@ if compile_prog "-Werror -fno-pie" "-no-pie"; then
LDFLAGS_NOPIE="-no-pie"
fi
if test "$pie" = "no"; then
if test "$static" = "yes"; then
if test "$pie" != "no" && compile_prog "-fPIE -DPIE" "-static-pie"; then
QEMU_CFLAGS="-fPIE -DPIE $QEMU_CFLAGS"
QEMU_LDFLAGS="-static-pie $QEMU_LDFLAGS"
pie="yes"
elif test "$pie" = "yes"; then
error_exit "-static-pie not available due to missing toolchain support"
else
QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
pie="no"
fi
elif test "$pie" = "no"; then
QEMU_CFLAGS="$CFLAGS_NOPIE $QEMU_CFLAGS"
QEMU_LDFLAGS="$LDFLAGS_NOPIE $QEMU_LDFLAGS"
elif compile_prog "-fPIE -DPIE" "-pie"; then