Add --with-extra-multilib-test option

NOTE: This is toolchain developer facing feature.

This allow user to add extra testing multi-lib arch, it's useful when
develop and/or testing new extensions.

Usage:

--with-extra-multilib-test="arch-abi[;arch-abi]"

e.g.

linux enable enabled multilib, so default will build with follwoing
configuration:

lib32/ilp32;@march=rv32imac@mabi=ilp32
lib32/ilp32d;@march=rv32imafdc@mabi=ilp32d
lib64/lp64;@march=rv64imac@mabi=lp64
lib64/lp64d;@march=rv64imafdc@mabi=lp64d

But you want to testing more on vector stuffs like rv32gcv and rv64gcv,
then you can configure with `--with-extra-multilib-test="rv32gcv-ilp32d;rv64gcv;lp64d"`

Then the testing will run rv32imac-ilp32 rv32imafdc-ilp32d
rv64imac-lp64 rv64imafdc-lp64d and rv32gcv-ilp32d;rv64gcv;lp64d!

NOTE: Extra multilib test settings still require existing
multilib has support those extra settings, e.g. you can't add
rv32imafc_zbb-ilp32f on above example since no compatible multilib has
provided.

1 files changed, 26 insertions, 0 deletions

diff --git a/configure b/configure
index 25697a7..7e6d350 100755
--- a/configure
+++ b/configure
@@ -614,6 +614,7 @@ musl_multilib_names
 newlib_multilib_names
 glibc_multilib_names
 multilib_flags
+extra_multilib_test
 multilib_gen
 WITH_SIM
 WITH_ISA_SPEC
@@ -689,6 +690,7 @@ with_isa_spec
 with_sim
 enable_multilib
 with_multilib_generator
+with_extra_multilib_test
 enable_gcc_checking
 with_cmodel
 with_target_cflags
@@ -1359,6 +1361,13 @@ Optional Packages:
                           Multi-libs configuration string, only supported for
                           bare-metal/elf toolchain, this option implied
                           --enable-multilib
+  --with-extra-multilib-test
+                          Adding extra multi-libs configuration for testing,
+                          this can be use even --disable-multilib, but be
+                          aware user need to make sure those extra multilib
+                          set can work/compatible with existing multi-libs,
+                          format: <arch>-<abi>;<arch>-<abi> e.g:
+                          --with-extra-multilib-test="rv64gcv-lp64;rv64gcv_zba-lp64"
   --with-cmodel           Select the code model to use when building libc and
                           libgcc [--with-cmodel=medlow]
   --with-target-cflags    Add extra target flags for C for library code
@@ -3417,6 +3426,16 @@ else
 fi
 
 
+
+# Check whether --with-extra-multilib-test was given.
+if test "${with_extra_multilib_test+set}" = set; then :
+  withval=$with_extra_multilib_test;
+else
+  with_extra_multilib_test=no
+
+fi
+
+
 if test "x$with_multilib_generator" != xno; then :
   multilib_gen="$with_multilib_generator"
 
@@ -3425,6 +3444,13 @@ else
 
 fi
 
+if test "x$with_extra_multilib_test" != xno; then :
+  extra_multilib_test="$with_extra_multilib_test"
+
+else
+  extra_multilib_test=""
+
+fi
 
 if test "x$enable_multilib" != xno || test "x$with_multilib_generator" != xno; then :
   multilib_flags=--enable-multilib