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[CMake] Teach build system to pass /fp:precise to compiler when

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using MSVC. This is set by the old build system but we weren't setting
it. This actually MSVC's default but in an effort to try to behave
more like the old build system we will set it anyway.
This commit is contained in:
Dan Liew 2017-04-28 23:28:04 +01:00
parent f568b2478f
commit fe1af4bcdb
2 changed files with 10 additions and 0 deletions
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9
CMakeLists.txt
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@ -324,6 +324,15 @@ if (("${TARGET_ARCHITECTURE}" STREQUAL "x86_64") OR ("${TARGET_ARCHITECTURE}" ST
unset(SSE_FLAGS)
endif()
# FIXME: Remove "x.." when CMP0054 is set to NEW
if ("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC")
# This is the default for MSVC already but to replicate the
# python/Makefile build system behaviour this flag is set
# explicitly.
z3_add_cxx_flag("/fp:precise" REQUIRED)
endif()
# There doesn't seem to be an equivalent for clang/gcc
################################################################################
# Threading support
################################################################################

1
contrib/cmake/cmake/z3_add_cxx_flag.cmake
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@ -7,6 +7,7 @@ function(z3_add_cxx_flag flag)
string(REPLACE "/" "_" SANITIZED_FLAG_NAME "${SANITIZED_FLAG_NAME}")
string(REPLACE "=" "_" SANITIZED_FLAG_NAME "${SANITIZED_FLAG_NAME}")
string(REPLACE " " "_" SANITIZED_FLAG_NAME "${SANITIZED_FLAG_NAME}")
string(REPLACE ":" "_" SANITIZED_FLAG_NAME "${SANITIZED_FLAG_NAME}")
unset(HAS_${SANITIZED_FLAG_NAME})
CHECK_CXX_COMPILER_FLAG("${flag}" HAS_${SANITIZED_FLAG_NAME})
if (z3_add_flag_REQUIRED AND NOT HAS_${SANITIZED_FLAG_NAME})