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build: tweak macros for Windows build

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Move the windows specific macro definitions for compiling c++ into the
target.  Add a number of newer options that are necessary to properly
build libc++ for windows.  This ensures that we do not accidentally
autolink msvcprt (Microsoft's C++ runtime library), do not define linker
pragmas which are msvcprt specific, and do not accidentally encode the
incorrect version of the msvc compatibility version.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@290837 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
2017-01-02 21:40:17 +00:00
parent 1b34b986bc
commit 766e557e5a
2 changed files with 22 additions and 3 deletions
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3
CMakeLists.txt
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@@ -442,9 +442,6 @@ if (LIBCXX_ENABLE_ASSERTIONS)
define_if_not(MSVC -D_DEBUG)
endif()
# Feature flags ===============================================================
define_if(MSVC -D_CRT_SECURE_NO_WARNINGS)
# Modules flags ===============================================================
# FIXME The libc++ sources are fundamentally non-modular. They need special
# versions of the headers in order to provide C++03 and legacy ABI definitions.

22
lib/CMakeLists.txt
View File

@@ -161,6 +161,28 @@ split_list(LIBCXX_LINK_FLAGS)
# Add a object library that contains the compiled source files.
add_library(cxx_objects OBJECT ${exclude_from_all} ${LIBCXX_SOURCES} ${LIBCXX_HEADERS})
if(WIN32 AND NOT MINGW)
target_compile_definitions(cxx_objects
PRIVATE
# Ignore the -MSC_VER mismatch, as we may build
# with a different compatibility version.
_ALLOW_MSC_VER_MISMATCH
# Don't check the msvcprt iterator debug levels
# as we will define the iterator types; libc++
# uses a different macro to identify the debug
# level.
_ALLOW_ITERATOR_DEBUG_LEVEL_MISMATCH
# We are building the c++ runtime, don't pull in
# msvcprt.
_CRTBLD
# Don't warn on the use of "deprecated"
# "insecure" functions which are standards
# specified.
_CRT_SECURE_NO_WARNINGS
# Use the ISO conforming behaviour for conversion
# in printf, scanf.
_CRT_STDIO_ISO_WIDE_SPECIFIERS)
endif()
set_target_properties(cxx_objects
PROPERTIES