This adds a new build of FoundationDB 6.1, using the new, much improved with CMake build system with fewer patches and rough edges. Signed-off-by: Austin Seipp <aseipp@pobox.com>
53 lines
2.3 KiB
Diff
53 lines
2.3 KiB
Diff
commit 7ed4745a092a203f92fc37ab5894e92117db0c94
|
|
Author: Austin Seipp <aseipp@pobox.com>
|
|
Date: Sat May 4 15:23:35 2019 -0500
|
|
|
|
flow: fix a build failure with Clang/libcxx on Linux
|
|
|
|
11bd7d7da introduced a hack on Linux to work around a missing symbol in
|
|
libstdc++'s _pic library on Ubuntu. Unfortunately, this causes the build
|
|
to fail when using Clang, as it doesn't believe this symbol is part of
|
|
its headers in c++11 mode.
|
|
|
|
Unfortunately there's no good way to distinguish libcxx from libstdc++
|
|
with the preprocessor, so we merely gate it by only checking for clang,
|
|
iff we are on Linux.
|
|
|
|
With this change, Clang 8.x can build FoundationDB on Linux using libcxx
|
|
as the standard C++ library.
|
|
|
|
Signed-off-by: Austin Seipp <aseipp@pobox.com>
|
|
|
|
diff --git a/flow/Platform.cpp b/flow/Platform.cpp
|
|
index 3d3f1ac0..9f21dfd4 100644
|
|
--- a/flow/Platform.cpp
|
|
+++ b/flow/Platform.cpp
|
|
@@ -2841,13 +2841,26 @@ void setupSlowTaskProfiler() {
|
|
#endif
|
|
}
|
|
|
|
-#ifdef __linux__
|
|
+#if defined(__linux__) && !defined(__clang__)
|
|
// There's no good place to put this, so it's here.
|
|
// Ubuntu's packaging of libstdc++_pic offers different symbols than libstdc++. Go figure.
|
|
// Notably, it's missing a definition of std::istream::ignore(long), which causes compilation errors
|
|
// in the bindings. Thus, we provide weak versions of their definitions, so that if the
|
|
// linked-against libstdc++ is missing their definitions, we'll be able to use the provided
|
|
// ignore(long, int) version.
|
|
+//
|
|
+// Note that this hack is DISABLED when we use Clang. It is only needed when we statically link
|
|
+// to the _pic libraries, but only official FDB Linux binaries are built this way using GCC. If we
|
|
+// don't use the _pic libraries, then this hack is entirely unneeded -- likely the case when using
|
|
+// Clang on Linux.
|
|
+//
|
|
+// Doing this allows us to use LLVM's libc++ with Clang on Linux -- otherwise, providing
|
|
+// a weak symbol definition for an internal (non-public) class member fails (due to that member
|
|
+// being non-existant on libc++.) See upstream GitHub issue #1533 for more information.
|
|
+//
|
|
+// TODO FIXME: Obliterate this when the official build environment is upgraded beyond Ubuntu 14.04.
|
|
+// (This problem should be fixed in later LTS releases.)
|
|
+
|
|
#include <istream>
|
|
namespace std {
|
|
typedef basic_istream<char, std::char_traits<char>> char_basic_istream;
|