[SR-5951] Swift stdlib does not build from source on Linux with glibc 2.26

[swift-ci]

Previous ID	SR-5951
Radar	rdar://problem/35199898
Original Reporter	Vladislav (JIRA User)
Type	Bug

Environment

Linux from scratch:
Linux lfs-sdb6 4.9.50 #1 SMP Fri Sep 15 22:52:51 MSK 2017 x86_64 GNU/Linux

Additional Detail from JIRA

Votes	0
Component/s	Standard Library
Labels	Bug, Linux, Runtime
Assignee	None
Priority	Medium

md5: 0d7711196f292553b504ad50861909c4

Issue Description:

The error is:

/mnt/swift/swift-source/swift
+ /usr/bin/cmake --build /mnt/swift/swift-source/build/buildbot_linux/swift-linux-x86_64 – -j4 all swift-stdlib-linux-x86_64
[33/148] Building CXX object stdlib/public/stubs/CMakeFiles/swiftStdlibStubs-linux-x86_64.dir/Stubs.cpp.o
FAILED: stdlib/public/stubs/CMakeFiles/swiftStdlibStubs-linux-x86_64.dir/Stubs.cpp.o 
/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64/./bin/clang+  -DCMARK_STATIC_DEFINE -DGTEST_HAS_RTTI=0 -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Istdlib/public/stubs -I/mnt/swift/swift-source/swift/stdlib/public/stubs -Iinclude -I/mnt/swift/swift-source/swift/include -I/mnt/swift/swift-source/llvm/include -I/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64/include -I/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64/tools/clang/include -I/mnt/swift/swift-source/llvm/tools/clang/include -I/mnt/swift/swift-source/cmark/src -I/mnt/swift/swift-source/build/buildbot_linux/cmark-linux-x86_64/src -Wno-unknown-warning-option -Werror=unguarded-availability-new -fno-stack-protector -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -std=c+11 -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -fcolor-diagnostics -ffunction-sections -fdata-sections -Werror=switch -Wdocumentation -Wimplicit-fallthrough -Wunreachable-code -Woverloaded-virtual -DOBJC_OLD_DISPATCH_PROTOTYPES=0 -fno-sanitize=all -DLLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING=1 -O3    -UNDEBUG  -fno-exceptions -fno-rtti -Wglobal-constructors -Wexit-time-destructors -fvisibility=hidden -DswiftCore_EXPORTS -target x86_64-unknown-linux-gnu -O2 -g0 -DNDEBUG -MD -MT stdlib/public/stubs/CMakeFiles/swiftStdlibStubs-linux-x86_64.dir/Stubs.cpp.o -MF stdlib/public/stubs/CMakeFiles/swiftStdlibStubs-linux-x86_64.dir/Stubs.cpp.o.d -o stdlib/public/stubs/CMakeFiles/swiftStdlibStubs-linux-x86_64.dir/Stubs.cpp.o -c /mnt/swift/swift-source/swift/stdlib/public/stubs/Stubs.cpp
/mnt/swift/swift-source/swift/stdlib/public/stubs/Stubs.cpp:64:10: fatal error: 'xlocale.h' file not found
#include <xlocale.h>
         ^~~~~~~~~~~
1 error generated.

xlocale.h is has been removed according to the glibc News file:

The nonstandard header <xlocale.h> has been removed. Most programs should use <locale.h> instead. If you have a specific need for the definition of locale_t with no other declarations, please contact [email protected] and explain.

[belkadan]

@swift-ci create

[belkadan]

Linux From Scratch isn't a supported platform at this time, so fixing this isn't a high priority.

[swift-ci]

Comment by Greg Morenz (JIRA)

Same error on arch linux.

[ahti]

Ubuntu 17.10 also ships with glibc 2.26 and does not include xlocale.h. While Ubuntu 17.10 also isn't supported (yet?), I suspect more people will start to run into this.

[finagolfin]

@AnthonyLatsis, can be closed.