Adrian Herrera has submitted this change. ( https://gem5-review.googlesource.com/c/public/gem5/+/38416 )

Change subject: util: m5ops, optional extra build flags
......................................................................

util: m5ops, optional extra build flags

This increases compilation control for users. Main use case is building
m5ops as part of an image distribution. Specifying a different sysroot
or dynamic linker may be required when the cross toolchain is built as
part of the process.

Change-Id: Icbd3faa92ea6e084fc4a9b2db83129bce73faf21
Signed-off-by: Adrian Herrera <adrian.herr...@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/38416
Reviewed-by: Jason Lowe-Power <power...@gmail.com>
Reviewed-by: Gabe Black <gabe.bl...@gmail.com>
Maintainer: Jason Lowe-Power <power...@gmail.com>
Tested-by: kokoro <noreply+kok...@google.com>
---
M util/m5/SConstruct
1 file changed, 11 insertions(+), 3 deletions(-)

Approvals:
Jason Lowe-Power: Looks good to me, but someone else must approve; Looks good to me, approved
  Gabe Black: Looks good to me, approved
  kokoro: Regressions pass



diff --git a/util/m5/SConstruct b/util/m5/SConstruct
index 5725f6c..63143a8 100644
--- a/util/m5/SConstruct
+++ b/util/m5/SConstruct
@@ -232,16 +232,24 @@
         #
# This also considers scons command line settings which may look like # environment variables, but are set after "scons" on the command line.
-        def get_abi_opt(name, default):
+        def _extract_abi_opt_val(name, default):
             var_name = env.subst('${ABI}.%s' % name)
-            env[name] = os.environ.get(
-                    var_name, ARGUMENTS.get(var_name, default))
+ return os.environ.get(var_name, ARGUMENTS.get(var_name, default))
+        def get_abi_opt(name, default):
+            env[name] = _extract_abi_opt_val(name, default)
+        def append_abi_opt(name):
+            env.Append(**{ name: _extract_abi_opt_val(name, '') })

         # Process the ABI's settings in the SConsopts file, storing them
         # in a copy of the primary environment.
         env.SConscript(Dir(root).File('SConsopts'),
                        exports=[ 'env', 'get_abi_opt' ])

+        # The user can pass extra build flags for each ABI
+        append_abi_opt('CCFLAGS')
+        append_abi_opt('CXXFLAGS')
+        append_abi_opt('LINKFLAGS')
+
# Check if this version of QEMU is available for running unit tests.
         env['HAVE_QEMU'] = env.Detect('${QEMU}') is not None
         if env['HAVE_QEMU'] and env.Detect('${CC}'):

--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: Icbd3faa92ea6e084fc4a9b2db83129bce73faf21
Gerrit-Change-Number: 38416
Gerrit-PatchSet: 4
Gerrit-Owner: Adrian Herrera <adrian.herr...@arm.com>
Gerrit-Reviewer: Adrian Herrera <adrian.herr...@arm.com>
Gerrit-Reviewer: Gabe Black <gabe.bl...@gmail.com>
Gerrit-Reviewer: Jason Lowe-Power <power...@gmail.com>
Gerrit-Reviewer: kokoro <noreply+kok...@google.com>
Gerrit-MessageType: merged
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