devtools: add libelf dependency to build test

The option CONFIG_RTE_LIBRTE_BPF_ELF was never enabled
with test-build.sh.
It is fixed with the environment variable DPDK_DEP_ELF.

Fixes: 5dba93ae5f2d ("bpf: add ability to load eBPF program from ELF object file")
Cc: stable@dpdk.org
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>

diff --git a/devtools/test-build.sh b/devtools/test-build.sh
index 42f4ad0..ace52a7 100755 (executable)
--- a/devtools/test-build.sh
+++ b/devtools/test-build.sh
@@ -9,6 +9,7 @@ default_path=$PATH
 # - DPDK_BUILD_TEST_CONFIGS (defconfig1+option1+option2 defconfig2)
 # - DPDK_DEP_ARCHIVE
 # - DPDK_DEP_CFLAGS
+# - DPDK_DEP_ELF (y/[n])
 # - DPDK_DEP_ISAL (y/[n])
 # - DPDK_DEP_JSON (y/[n])
 # - DPDK_DEP_LDFLAGS
@@ -96,6 +97,7 @@ reset_env ()
        unset CROSS
        unset DPDK_DEP_ARCHIVE
        unset DPDK_DEP_CFLAGS
+       unset DPDK_DEP_ELF
        unset DPDK_DEP_ISAL
        unset DPDK_DEP_JSON
        unset DPDK_DEP_LDFLAGS
@@ -186,6 +188,8 @@ config () # <directory> <target> <options>
                sed -ri          's,(MVPP2_PMD=)n,\1y,' $1/.config
                test -z "$LIBMUSDK_PATH" || \
                sed -ri         's,(MVNETA_PMD=)n,\1y,' $1/.config
+               test "$DPDK_DEP_ELF" != y || \
+               sed -ri            's,(BPF_ELF=)n,\1y,' $1/.config
                test -z "$DPDK_DEP_JSON" || \
                sed -ri          's,(TELEMETRY=)n,\1y,' $1/.config
                build_config_hook $1 $2 $3