1268607 - Unable to compile using Clang on Windows with Visual Studio 2015

Status: RESOLVED DUPLICATE of bug 1296737

(Firefox Build System :: General, defect)

Description

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

Main error:

DEBUG: configure:3326: clang-cl.exe -fms-compatibility-version=18.00.30723 -fallback -c  -TP -nologo -wd4345 -wd4351 -wd4800 -wd4819 -wd4595 -D_CRT_SECURE_NO_WARNINGS  conftest.C 1>&5
DEBUG: configure: error: The linker major version, 14.00.23918.0,  does not match the compiler suite version, 12.

https://dxr.mozilla.org/mozilla-central/rev/86730d0a82093d705e44f33a34973d28b269f1ea/build/moz.configure/toolchain.configure#346

seems to define only Visual C++ 2013 Update 3 emulation, but not 2015.

===

On m-c ver 4292da9df16b, I tried to overwrite with -fmsc-version=1900:

DEBUG: Executing: `clang-cl.exe -fmsc-version=1900 -Xclang -std=gnu99 -fms-compatibility-version=18.00.30723 -fallback -E 'c:\users\fuzz1win\appdata\local\temp\conftest.qkwaqp.c'`
DEBUG: The command returned non-zero exit status 1.
DEBUG: Its error output was:
DEBUG: | clang-cl.exe: error: invalid argument '-fmsc-version=1900' not allowed with '-fms-compatibility-version=18.00.30723'
ERROR: Unknown compiler or compiler not supported.

-fmsc-version=1800:

DEBUG: Executing: `clang-cl.exe -fmsc-version=1800 -Xclang -std=gnu99 -fms-compatibility-version=18.00.30723 -fallback -E 'c:\users\fuzz1win\appdata\local\temp\conftest.iptwyx.c'`
DEBUG: The command returned non-zero exit status 1.
DEBUG: Its error output was:
DEBUG: | clang-cl.exe: error: invalid argument '-fmsc-version=1800' not allowed with '-fms-compatibility-version=18.00.30723'
ERROR: Unknown compiler or compiler not supported.

Without either of these flags:

DEBUG: configure:2906: checking how to run the C preprocessor
DEBUG: configure:2986: checking how to run the C++ preprocessor
DEBUG: configure:3032: checking for rustc
DEBUG: configure:3301: clang-cl.exe -Xclang -std=gnu99 -fms-compatibility-version=18.00.30723 -fallback -c  -TC -nologo -wd4819  conftest.c 1>&5
DEBUG: configure:3326: clang-cl.exe -fms-compatibility-version=18.00.30723 -fallback -c  -TP -nologo -wd4345 -wd4351 -wd4800 -wd4819 -wd4595 -D_CRT_SECURE_NO_WARNINGS  conftest.C 1>&5
DEBUG: configure: error: The linker major version, 14.00.23918.0,  does not match the compiler suite version, 12.
ERROR: old-configure failed

Comment 1

[Nathan Froyd [:froydnj]]

Now that we don't have to worry about whether we're compiling with MSVC2013 or MSVC2015, this bug is somewhat simpler to address.  I'm going to duplicate this to a bug that has some discussion and patches.