[Buildroot] [git commit branch/2023.02.x] package/libkrb5: force arm mode instead of Thumb mode

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=8bbf172fcfee281218d8173175caff78e13db66b
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2023.02.x

Fix the following build failure in Thumb mode:

/tmp/ccdzbA2E.s:845: Error: selected processor does not support `mcr p15,0,r2,c7,c10,5' in Thumb mode

Fixes:
 - http://autobuild.buildroot.org/results/08be1fa0fee0f05818cd78d4718caa3476c570ae

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
Reviewed-by: André Zwing <nerv at dawncrow.de>
Signed-off-by: Arnout Vandecappelle <arnout at mind.be>
(cherry picked from commit 355ceb893078b4e1d458a3367fc2c989911fefe1)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 package/libkrb5/libkrb5.mk | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/package/libkrb5/libkrb5.mk b/package/libkrb5/libkrb5.mk
index 9bacfaee58..65153be301 100644
--- a/package/libkrb5/libkrb5.mk
+++ b/package/libkrb5/libkrb5.mk
@@ -34,6 +34,13 @@ LIBKRB5_CONF_OPTS = \
 	--without-tcl \
 	--disable-rpath
 
+# libkrb5 has some assembly function that is not present in Thumb mode:
+# Error: selected processor does not support `mcr p15,0,r2,c7,c10,5' in Thumb mode
+# so, we desactivate Thumb mode
+ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
+LIBKRB5_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -marm"
+endif
+
 # Enabling static and shared at the same time is not supported
 ifeq ($(BR2_SHARED_STATIC_LIBS),y)
 LIBKRB5_CONF_OPTS += --disable-static