From 444e556776c3693f9ccc19c5918172a559f62ae4 Mon Sep 17 00:00:00 2001
From: Thomas Monjalon <thomas@monjalon.net>
Date: Mon, 15 Jun 2020 00:03:29 +0200
Subject: [PATCH] devtools: shrink cross-compilation test definition

Each cross-compilation case needs to define the target compiler
and the meson cross file.
Given the compiler is already defined in the cross file,
the latter is enough.

The function "build" is changed to accept a cross file alternatively
to the compiler name. In the case of a file (detected if readable),
the compiler is extracted with sed and tr, and the option --cross-file
is automatically added.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: David Christensen <drc@linux.vnet.ibm.com>
---
 devtools/test-meson-builds.sh | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/devtools/test-meson-builds.sh b/devtools/test-meson-builds.sh
index 18b874fac5..bee55ec038 100755
--- a/devtools/test-meson-builds.sh
+++ b/devtools/test-meson-builds.sh
@@ -117,16 +117,24 @@ install_target () # <builddir> <installdir>
 	fi
 }
 
-build () # <directory> <target compiler> <meson options>
+build () # <directory> <target compiler | cross file> <meson options>
 {
 	targetdir=$1
 	shift
-	targetcc=$1
+	crossfile=
+	[ -r $1 ] && crossfile=$1 || targetcc=$1
 	shift
 	# skip build if compiler not available
 	command -v ${CC##* } >/dev/null 2>&1 || return 0
+	if [ -n "$crossfile" ] ; then
+		cross="--cross-file $crossfile"
+		targetcc=$(sed -n 's,^c[[:space:]]*=[[:space:]]*,,p' \
+			$crossfile | tr -d "'" | tr -d '"')
+	else
+		cross=
+	fi
 	load_env $targetcc || return 0
-	config $srcdir $builds_dir/$targetdir --werror $*
+	config $srcdir $builds_dir/$targetdir $cross --werror $*
 	compile $builds_dir/$targetdir
 	if [ -n "$DPDK_ABI_REF_VERSION" ]; then
 		abirefdir=${DPDK_ABI_REF_DIR:-reference}/$DPDK_ABI_REF_VERSION
@@ -140,7 +148,7 @@ build () # <directory> <target compiler> <meson options>
 			fi
 
 			rm -rf $abirefdir/build
-			config $abirefdir/src $abirefdir/build $*
+			config $abirefdir/src $abirefdir/build $cross $*
 			compile $abirefdir/build
 			install_target $abirefdir/build $abirefdir/$targetdir
 			$srcdir/devtools/gen-abi.sh $abirefdir/$targetdir
@@ -186,17 +194,15 @@ if [ "$ok" = "false" ] ; then
 fi
 build build-x86-default cc -Dlibdir=lib -Dmachine=$default_machine $use_shared
 
-c=aarch64-linux-gnu-gcc
 # generic armv8a with clang as host compiler
+f=$srcdir/config/arm/arm64_armv8_linux_gcc
 export CC="clang"
-build build-arm64-host-clang $c $use_shared \
-	--cross-file $srcdir/config/arm/arm64_armv8_linux_gcc
+build build-arm64-host-clang $f $use_shared
 unset CC
-# all gcc/arm configurations
+# some gcc/arm configurations
 for f in $srcdir/config/arm/arm64_[bdo]*gcc ; do
 	export CC="$CCACHE gcc"
-	build build-$(basename $f | tr '_' '-' | cut -d'-' -f-2) $c \
-		$use_shared --cross-file $f
+	build build-$(basename $f | tr '_' '-' | cut -d'-' -f-2) $f $use_shared
 	unset CC
 done
 
-- 
2.20.1