Melissa Jost has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/69777?usp=email )
Change subject: scons: Add stdc++fs and libc++experimental for clang LIBS
env
......................................................................
scons: Add stdc++fs and libc++experimental for clang LIBS env
This change fixes a failure in the compiler tests:
https://jenkins.gem5.org/job/compiler-checks/573/
These tests were failing due to the use of `std::filesystem`, which
requires 'libc++experimental' to be linked for versions of clang
6 and older, and 'stdc++fs' to be linked for clang versions 7
through 9.
Change-Id: I4fa03923e8dc616046dead939c77d49b301de36b
---
M SConstruct
1 file changed, 17 insertions(+), 0 deletions(-)
diff --git a/SConstruct b/SConstruct
index e91e700..55d36ec 100755
--- a/SConstruct
+++ b/SConstruct
@@ -511,6 +511,23 @@
env.Append(TCMALLOC_CCFLAGS=['-fno-builtin'])
+ if compareVersions(env['CXXVERSION'], "10") < 0:
+ # `libstdc++fs`` must be explicitly linked for
`std::filesystem``
+ # in clang versions 7 through 9. For clang version 6,
+ # `libc++experimental`` must be explicitly linked instead.
+ # As of clang version 10, this is not required.
+ #
+ # In addition, for clang versions 6 through 9, the
+ # `std::filesystem` is under the `experimental`
+ # namespace(`std::experimental::filesystem`).
+ #
+ # Note: gem5 does not support clang versions < 6.
+ if compareVersions(env['CXXVERSION'], "6") < 0:
+ env.Append(LIBS=['libc++experimental'])
+ else:
+ env.Append(LIBS=['stdc++fs'])
+
+
# On Mac OS X/Darwin we need to also use libc++ (part of XCode) as
# opposed to libstdc++, as the later is dated.
if sys.platform == "darwin":
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I4fa03923e8dc616046dead939c77d49b301de36b
Gerrit-Change-Number: 69777
Gerrit-PatchSet: 1
Gerrit-Owner: Melissa Jost <melissakj...@gmail.com>
Gerrit-MessageType: newchange
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