[PATCH] spec/pkgconfig: Allow builds to override headers

[Kinsey Moore]

This allows any builds targeting an installed RTEMS BSP to override
headers in the installed BSP reliably, including headers previously
installed by that or other builds. This includes applications, network
stacks, libraries, and any other builds.
---
 spec/build/bsps/pkgconfig.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spec/build/bsps/pkgconfig.yml b/spec/build/bsps/pkgconfig.yml
index a9462fcc95..8a3c3677a4 100644
--- a/spec/build/bsps/pkgconfig.yml
+++ b/spec/build/bsps/pkgconfig.yml
@@ -22,7 +22,7 @@ content: |
   Name: ${ARCH}-rtems${__RTEMS_MAJOR__}-${BSP_NAME}
   Version: ${RTEMS_VERSION}
   Description: RTEMS BSP ${ARCH}/${BSP_NAME}
-  Cflags: $${ABI_FLAGS} -I$${includedir}
+  Cflags: $${ABI_FLAGS} -isystem$${includedir}
   Ldflags: -B$${libdir} ${PKGCONFIG_LDFLAGS}
   Libs: -B$${libdir} ${PKGCONFIG_LDFLAGS}
 copyrights:
-- 
2.30.2