[Buildroot] [git commit branch/2021.05.x] package/trace-cmd: fix build for Sparc64

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=1902517b8580b23430e5ac4402a47524c52e3c6b
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2021.05.x

Trace-cmd needs -fPIC for Sparc64 platform otherwise it fails on linking,
so add -fPIC to CFLAGS when building for such platform.

Fixes;
    http://autobuild.buildroot.net/results/c59/c596f6308b7f4d44d9ba009ed0c395396fc72f47/

Signed-off-by: Giulio Benetti <giulio.benetti at benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
(cherry picked from commit b1942c8e47d0898ee0598a57626d3dae868782e1)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 package/trace-cmd/trace-cmd.mk | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/package/trace-cmd/trace-cmd.mk b/package/trace-cmd/trace-cmd.mk
index cd3fcb9755..bc431e5dd2 100644
--- a/package/trace-cmd/trace-cmd.mk
+++ b/package/trace-cmd/trace-cmd.mk
@@ -31,6 +31,11 @@ endif
 # redefining it on the command line causes build problems.
 TRACE_CMD_CFLAGS = $(filter-out -D_LARGEFILE64_SOURCE,$(TARGET_CFLAGS))
 
+# Sparc64 needs -fPIC
+ifeq ($(BR2_sparc64),y)
+TRACE_CMD_CFLAGS += -fPIC
+endif
+
 # trace-cmd use CPPFLAGS to add some extra flags.
 # But like for CFLAGS, $(TARGET_CPPFLAGS) contains _LARGEFILE64_SOURCE
 # that causes build problems.