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dropbear: fix build with non-SSP capable toolchain

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By default, Dropbear's configure script enables hardening
flags. Unfortunately, the check for SSP only uses AC_COMPILE_IFELSE(),
and therefore doesn't properly test for the availability of libssp,
visible only at link time.

In addition, Buildroot passes its own hardening flags, depending on
various global options. So, we simply disable hardening flags in
Dropbear.

This fixes a build failure with non-SSP capable toolchains happening
since the bump to 2018.76.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit b0aafef6198ee292c4f426295e92cc9b601c2338)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas Petazzoni 2018-04-28 17:31:43 +02:00 committed by Peter Korsgaard
parent e7fc3403bb
commit dccaff8e82
1 changed files with 5 additions and 0 deletions
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5
package/dropbear/dropbear.mk
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@ -12,6 +12,11 @@ DROPBEAR_LICENSE_FILES = LICENSE
DROPBEAR_TARGET_BINS = dropbearkey dropbearconvert scp
DROPBEAR_PROGRAMS = dropbear $(DROPBEAR_TARGET_BINS)
# Disable hardening flags added by dropbear configure.ac, and let
# Buildroot add them when the relevant options are enabled. This
# prevents dropbear from using SSP support when not available.
DROPBEAR_CONF_OPTS = --disable-harden
ifeq ($(BR2_PACKAGE_DROPBEAR_CLIENT),y)
# Build dbclient, and create a convenience symlink named ssh
DROPBEAR_PROGRAMS += dbclient