libsagui/cmake/SgFlags.cmake

#.rst:
# SgFlags
# -------
#
# Compiler/linker warnings.
#
# Configures the compiler/linker flags.
#
# ::
#
# SG_PICKY_COMPILER - Enable/disable the compiler warnings.

#                         _
#   ___  __ _  __ _ _   _(_)
#  / __|/ _` |/ _` | | | | |
#  \__ \ (_| | (_| | |_| | |
#  |___/\__,_|\__, |\__,_|_|
#             |___/
#
# Cross-platform library which helps to develop web servers or frameworks.
#
# Copyright (C) 2016-2024 Silvio Clecio <[email protected]>
#
# Sagui library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# Sagui library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with Sagui library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#

#TODO: -fsanitize=address/leak

if(__SG_FLAGS_INCLUDED)
  return()
endif()
set(__SG_FLAGS_INCLUDED ON)

option(SG_PICKY_COMPILER "Enable picky compiler options" ON)

if(MINGW)
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -static")
endif()

if(BUILD_TESTING AND NOT APPLE)
  set(CMAKE_EXE_LINKER_FLAGS
      "${CMAKE_EXE_LINKER_FLAGS} -Wl,--allow-multiple-definition")
endif()

if(SG_PICKY_COMPILER)
  if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
    #-Wsign-conversion - needs to fix (un)signed bugs in utstring.h
    set(CMAKE_C_FLAGS
        "${CMAKE_C_FLAGS} -Wall -Werror -Wextra -Wpedantic -Wdeclaration-after-statement -Wstrict-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline"
    )
    if(ANDROID)
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-command-line-argument")
    endif()
  else()
    message(FATAL_ERROR "Unknown C compiler: ${CMAKE_C_COMPILER}")
  endif()
endif()