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Use -? instead of /? to test compiler for MSVC-like command-line support

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MS-style command-line tools accept either `/` or `-` for command-line
options.  Prefer `-` over `/` so that non-MS tools do not treat it as a
path.

Fixes: #18941
This commit is contained in:
Brad King 2019-02-18 11:43:37 -05:00
parent e6897c72e7
commit b186329d3d
3 changed files with 3 additions and 3 deletions
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2
Modules/CMakeDetermineASMCompiler.cmake
View File

@ -83,7 +83,7 @@ if(NOT CMAKE_ASM${ASM_DIALECT}_COMPILER_ID)
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_XL "XL C")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS MSVC )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_MSVC "/?")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_MSVC "-?")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_MSVC "Microsoft")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS TI )

2
Modules/CMakeDetermineCompilerId.cmake
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@ -824,7 +824,7 @@ function(CMAKE_DIAGNOSE_UNSUPPORTED_CLANG lang envvar)
endif()
# Test whether an MSVC-like command-line option works.
execute_process(COMMAND "${CMAKE_${lang}_COMPILER}" /?
execute_process(COMMAND "${CMAKE_${lang}_COMPILER}" -?
RESULT_VARIABLE _clang_result
OUTPUT_VARIABLE _clang_stdout
ERROR_VARIABLE _clang_stderr)

2
Modules/CMakeDetermineVSServicePack.cmake
View File

@ -79,7 +79,7 @@ endfunction()
function(_DetermineVSServicePack_FastCheckVersionWithCompiler _SUCCESS_VAR _VERSION_VAR)
if(EXISTS ${CMAKE_CXX_COMPILER})
execute_process(
COMMAND ${CMAKE_CXX_COMPILER} /?
COMMAND ${CMAKE_CXX_COMPILER} -?
ERROR_VARIABLE _output
OUTPUT_QUIET
)