The config options are updated with sed and the short inline option.
In FreeBSD, the suffix argument of the inline option is mandatory.
In order to avoid creating a backup file when using sed inline,
the argument is set as an empty suffix.
The short option '-i' does not expect '=' before the suffix argument,
so it understands '=' as the file suffix.
As a consequence, a backup file named '.config=' was created
in the build directory.

Removing the '=' sign while keeping an empty suffix
avoids creating a backup file.

Fixes: 4a4a20c4775b ("devtools: support FreeBSD")
Cc: olivier.m...@6wind.com
Cc: sta...@dpdk.org

Reported-by: Ali Alnubani <alia...@mellanox.com>
Signed-off-by: Thomas Monjalon <tho...@monjalon.net>
---

This patch does not work on FreeBSD.
Does it mean the equal sign is required on FreeBSD?
This is not what I see on the documentation:
https://www.freebsd.org/cgi/man.cgi?query=sed&sektion=&n=1

---
 devtools/test-build.sh | 76 +++++++++++++++++++++---------------------
 1 file changed, 38 insertions(+), 38 deletions(-)

diff --git a/devtools/test-build.sh b/devtools/test-build.sh
index 52305fbb8c..8b6e484a8e 100755
--- a/devtools/test-build.sh
+++ b/devtools/test-build.sh
@@ -141,82 +141,82 @@ config () # <directory> <target> <options>
                echo 'Customize configuration'
                # Built-in options (lowercase)
                ! echo $3 | grep -q '+default' || \
-               sed -ri="" 's,(RTE_MACHINE=")native,\1default,' $1/.config
+               sed -ri'' 's,(RTE_MACHINE=")native,\1default,' $1/.config
                echo $3 | grep -q '+next' || \
-               sed -ri=""           's,(NEXT_ABI=)y,\1n,' $1/.config
+               sed -ri''           's,(NEXT_ABI=)y,\1n,' $1/.config
                ! echo $3 | grep -q '+shared' || \
-               sed -ri=""         's,(SHARED_LIB=)n,\1y,' $1/.config
+               sed -ri''         's,(SHARED_LIB=)n,\1y,' $1/.config
                ! echo $3 | grep -q '+debug' || ( \
-               sed -ri=""  's,(RTE_LOG_DP_LEVEL=).*,\1RTE_LOG_DEBUG,' 
$1/.config
-               sed -ri=""           's,(_DEBUG.*=)n,\1y,' $1/.config
-               sed -ri=""  's,(_STAT)([S_].*=|=)n,\1\2y,' $1/.config
-               sed -ri="" 's,(TEST_PMD_RECORD_.*=)n,\1y,' $1/.config )
+               sed -ri'' 's,(RTE_LOG_DP_LEVEL=).*,\1RTE_LOG_DEBUG,' $1/.config
+               sed -ri''           's,(_DEBUG.*=)n,\1y,' $1/.config
+               sed -ri''  's,(_STAT)([S_].*=|=)n,\1\2y,' $1/.config
+               sed -ri'' 's,(TEST_PMD_RECORD_.*=)n,\1y,' $1/.config )
 
                # Automatic configuration
                test "$DPDK_DEP_NUMA" != n || \
-               sed -ri=""             's,(NUMA.*=)y,\1n,' $1/.config
-               sed -ri=""    's,(LIBRTE_IEEE1588=)n,\1y,' $1/.config
-               sed -ri=""             's,(BYPASS=)n,\1y,' $1/.config
+               sed -ri''             's,(NUMA.*=)y,\1n,' $1/.config
+               sed -ri''    's,(LIBRTE_IEEE1588=)n,\1y,' $1/.config
+               sed -ri''             's,(BYPASS=)n,\1y,' $1/.config
                test "$DPDK_DEP_ARCHIVE" != y || \
-               sed -ri=""       's,(RESOURCE_TAR=)n,\1y,' $1/.config
+               sed -ri''       's,(RESOURCE_TAR=)n,\1y,' $1/.config
                test "$DPDK_DEP_BPF" != y || \
-               sed -ri=""         's,(PMD_AF_XDP=)n,\1y,' $1/.config
+               sed -ri''         's,(PMD_AF_XDP=)n,\1y,' $1/.config
                test "$DPDK_DEP_ISAL" != y || \
-               sed -ri=""           's,(PMD_ISAL=)n,\1y,' $1/.config
+               sed -ri''           's,(PMD_ISAL=)n,\1y,' $1/.config
                test "$DPDK_DEP_MLX" != y || \
-               sed -ri=""           's,(MLX._PMD=)n,\1y,' $1/.config
+               sed -ri''           's,(MLX._PMD=)n,\1y,' $1/.config
                test "$DPDK_DEP_NFB" != y || \
-               sed -ri=""            's,(NFB_PMD=)n,\1y,' $1/.config
+               sed -ri''            's,(NFB_PMD=)n,\1y,' $1/.config
                test "$DPDK_DEP_SZE" != y || \
-               sed -ri=""       's,(PMD_SZEDATA2=)n,\1y,' $1/.config
+               sed -ri''       's,(PMD_SZEDATA2=)n,\1y,' $1/.config
                test "$DPDK_DEP_ZLIB" != y || \
-               sed -ri=""          's,(BNX2X_PMD=)n,\1y,' $1/.config
+               sed -ri''          's,(BNX2X_PMD=)n,\1y,' $1/.config
                test "$DPDK_DEP_ZLIB" != y || \
-               sed -ri=""           's,(PMD_ZLIB=)n,\1y,' $1/.config
+               sed -ri''           's,(PMD_ZLIB=)n,\1y,' $1/.config
                test "$DPDK_DEP_ZLIB" != y || \
-               sed -ri=""   's,(COMPRESSDEV_TEST=)n,\1y,' $1/.config
+               sed -ri''   's,(COMPRESSDEV_TEST=)n,\1y,' $1/.config
                test "$DPDK_DEP_PCAP" != y || \
-               sed -ri=""               's,(PCAP=)n,\1y,' $1/.config
+               sed -ri''               's,(PCAP=)n,\1y,' $1/.config
                test -z "$ARMV8_CRYPTO_LIB_PATH" || \
-               sed -ri=""   's,(PMD_ARMV8_CRYPTO=)n,\1y,' $1/.config
+               sed -ri''   's,(PMD_ARMV8_CRYPTO=)n,\1y,' $1/.config
                test "$DPDK_DEP_IPSEC_MB" != y || \
-               sed -ri=""       's,(PMD_AESNI_MB=)n,\1y,' $1/.config
+               sed -ri''       's,(PMD_AESNI_MB=)n,\1y,' $1/.config
                test "$DPDK_DEP_IPSEC_MB" != y || \
-               sed -ri=""      's,(PMD_AESNI_GCM=)n,\1y,' $1/.config
+               sed -ri''      's,(PMD_AESNI_GCM=)n,\1y,' $1/.config
                test -z "$LIBSSO_SNOW3G_PATH" || \
-               sed -ri=""         's,(PMD_SNOW3G=)n,\1y,' $1/.config
+               sed -ri''         's,(PMD_SNOW3G=)n,\1y,' $1/.config
                test -z "$LIBSSO_KASUMI_PATH" || \
-               sed -ri=""         's,(PMD_KASUMI=)n,\1y,' $1/.config
+               sed -ri''         's,(PMD_KASUMI=)n,\1y,' $1/.config
                test -z "$LIBSSO_ZUC_PATH" || \
-               sed -ri=""            's,(PMD_ZUC=)n,\1y,' $1/.config
+               sed -ri''            's,(PMD_ZUC=)n,\1y,' $1/.config
                test "$DPDK_DEP_SSL" != y || \
-               sed -ri=""            's,(PMD_CCP=)n,\1y,' $1/.config
+               sed -ri''            's,(PMD_CCP=)n,\1y,' $1/.config
                test "$DPDK_DEP_SSL" != y || \
-               sed -ri=""        's,(PMD_OPENSSL=)n,\1y,' $1/.config
+               sed -ri''        's,(PMD_OPENSSL=)n,\1y,' $1/.config
                test "$DPDK_DEP_SSL" != y || \
-               sed -ri=""            's,(QAT_SYM=)n,\1y,' $1/.config
+               sed -ri''            's,(QAT_SYM=)n,\1y,' $1/.config
                test -z "$FLEXRAN_SDK" || \
-               sed -ri=""     's,(BBDEV_TURBO_SW=)n,\1y,' $1/.config
-               sed -ri=""           's,(SCHED_.*=)n,\1y,' $1/.config
+               sed -ri''     's,(BBDEV_TURBO_SW=)n,\1y,' $1/.config
+               sed -ri''           's,(SCHED_.*=)n,\1y,' $1/.config
                test -z "$LIBMUSDK_PATH" || \
-               sed -ri=""   's,(PMD_MVSAM_CRYPTO=)n,\1y,' $1/.config
+               sed -ri''   's,(PMD_MVSAM_CRYPTO=)n,\1y,' $1/.config
                test -z "$LIBMUSDK_PATH" || \
-               sed -ri=""          's,(MVPP2_PMD=)n,\1y,' $1/.config
+               sed -ri''          's,(MVPP2_PMD=)n,\1y,' $1/.config
                test -z "$LIBMUSDK_PATH" || \
-               sed -ri=""         's,(MVNETA_PMD=)n,\1y,' $1/.config
+               sed -ri''         's,(MVNETA_PMD=)n,\1y,' $1/.config
                test "$DPDK_DEP_ELF" != y || \
-               sed -ri=""            's,(BPF_ELF=)n,\1y,' $1/.config
+               sed -ri''            's,(BPF_ELF=)n,\1y,' $1/.config
                test "$DPDK_DEP_JSON" != y || \
-               sed -ri=""          's,(TELEMETRY=)n,\1y,' $1/.config
+               sed -ri''          's,(TELEMETRY=)n,\1y,' $1/.config
                build_config_hook $1 $2 $3
 
                # Explicit enabler/disabler (uppercase)
                for option in $(echo $3 | sed 's,[~+], &,g') ; do
                        pattern=$(echo $option | cut -c2-)
                        if echo $option | grep -q '^~' ; then
-                               sed -ri="" "s,($pattern=)y,\1n," $1/.config
+                               sed -ri'' "s,($pattern=)y,\1n," $1/.config
                        elif echo $option | grep -q '^+' ; then
-                               sed -ri="" "s,($pattern=)n,\1y," $1/.config
+                               sed -ri'' "s,($pattern=)n,\1y," $1/.config
                        fi
                done
        fi
-- 
2.24.0

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