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# CMakeLists.txt
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.org>
# Copyright 1998 Gerald Combs
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
add_executable(lemon lemon.c)
# To keep lemon.c as close to upstream as possible, deliberately ignore
# some stylistic issues.
set(lemon_cflags)
if(CMAKE_C_COMPILER_ID MATCHES "MSVC")
# Normal MSVC has no warnings, but VS Code Analysis finds a bunch
# (when ENABLE_CODE_ANALYSIS is set).
set(lemon_cflags
/wd6001 # Using uninitialized memory '*zBuf'.
/wd6011 # Dereferencing NULL pointer 'cp'.
/wd6308 # realloc may return NULL and leak original memory.
/wd6385 # Buffer overrun (read) in Parse, related to 'cp'
/wd6386 # Buffer overrun (write) in Parse, related to 'filebuf'
/wd6387 # strlen(argv[0]) could receive a NULL pointer.
/wd28182 # Dereferencing NULL pointer. 'ap2' contains the same NULL value as 'ap' did.
/wd28183 # passing 0 (from realloc) to memcpy
/wd28199 # Using possibly uninitialized memory
)
else()
set(lemon_cflags_test
# GCC 8.2.1 is not smart enough to recognize "Fall thru ..."
-Wimplicit-fallthrough
-Wsign-compare
-Wunused-parameter
-Wshorten-64-to-32
# From WIRESHARK_C_ONLY_FLAGS
-Wc++-compat
-Wold-style-definition
-Wstrict-prototypes
)
if(ENABLE_EXTRA_COMPILER_WARNINGS)
list(APPEND lemon_cflags_test
-Wpedantic
-Wstrict-overflow
-Wcast-qual
-Wredundant-decls
-Wmissing-prototypes
-Wmissing-declarations
-Wcast-align
)
endif()
foreach(THIS_FLAG IN LISTS lemon_cflags_test)
string(MAKE_C_IDENTIFIER "C${THIS_FLAG}_VALID" _flag_var)
check_c_linker_flag(${THIS_FLAG} ${_flag_var})
if(${_flag_var})
# Look for -Wfoo flags above in case it is cached, but
# actually disable the warning here with -Wno-foo.
string(REPLACE "-W" "-Wno-" THIS_FLAG "${THIS_FLAG}")
list(APPEND lemon_cflags ${THIS_FLAG})
endif()
endforeach()
endif()
target_compile_options(lemon PRIVATE ${lemon_cflags})
#
# Editor modelines - https://www.wireshark.org/tools/modelines.html
#
# Local variables:
# c-basic-offset: 8
# tab-width: 8
# indent-tabs-mode: t
# End:
#
# vi: set shiftwidth=8 tabstop=8 noexpandtab:
# :indentSize=8:tabSize=8:noTabs=false:
#
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