c697fb7f7c
It is added an INTERNALLIB and not installed. It will be used by kyua. This is a preparatory commit for D24103. Reviewed by: emaste Obtained from: CheriBSD Sponsored by: DARPA
113 lines
4.5 KiB
Plaintext
113 lines
4.5 KiB
Plaintext
dnl Copyright 2010 Google Inc.
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dnl All rights reserved.
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dnl
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dnl Redistribution and use in source and binary forms, with or without
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dnl modification, are permitted provided that the following conditions are
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dnl met:
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dnl
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dnl * Redistributions of source code must retain the above copyright
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dnl notice, this list of conditions and the following disclaimer.
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dnl * Redistributions in binary form must reproduce the above copyright
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dnl notice, this list of conditions and the following disclaimer in the
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dnl documentation and/or other materials provided with the distribution.
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dnl * Neither the name of Google Inc. nor the names of its contributors
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dnl may be used to endorse or promote products derived from this software
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dnl without specific prior written permission.
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dnl
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dnl THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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dnl "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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dnl LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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dnl A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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dnl OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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dnl SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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dnl LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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dnl DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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dnl THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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dnl (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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dnl OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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dnl \file developer-mode.m4
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dnl
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dnl "Developer mode" is a mode in which the build system reports any
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dnl build-time warnings as fatal errors. This helps in minimizing the
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dnl amount of trivial coding problems introduced in the code.
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dnl Unfortunately, this is not bullet-proof due to the wide variety of
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dnl compilers available and their different warning diagnostics.
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dnl
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dnl When developer mode support is added to a package, the compilation will
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dnl gain a bunch of extra warning diagnostics. These will NOT be enforced
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dnl unless developer mode is enabled.
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dnl
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dnl Developer mode is enabled when the user requests it through the
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dnl configure command line, or when building from the repository. The
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dnl latter is to minimize the risk of committing new code with warnings
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dnl into the tree.
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dnl Adds "developer mode" support to the package.
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dnl
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dnl This macro performs the actual definition of the --enable-developer
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dnl flag and implements all of its logic. See the file-level comment for
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dnl details as to what this implies.
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AC_DEFUN([KYUA_DEVELOPER_MODE], [
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m4_foreach([language], [$1], [m4_set_add([languages], language)])
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AC_ARG_ENABLE(
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[developer],
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AS_HELP_STRING([--enable-developer], [enable developer features]),,
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[if test -d ${srcdir}/.git; then
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AC_MSG_NOTICE([building from HEAD; developer mode autoenabled])
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enable_developer=yes
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else
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enable_developer=no
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fi])
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#
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# The following warning flags should also be enabled but cannot be.
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# Reasons given below.
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#
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# -Wold-style-cast: Raises errors when using TIOCGWINSZ, at least under
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# Mac OS X. This is due to the way _IOR is defined.
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#
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try_c_cxx_flags="-D_FORTIFY_SOURCE=2 \
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-Wall \
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-Wcast-qual \
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-Wextra \
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-Wpointer-arith \
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-Wredundant-decls \
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-Wreturn-type \
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-Wshadow \
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-Wsign-compare \
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-Wswitch \
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-Wwrite-strings"
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try_c_flags="-Wmissing-prototypes \
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-Wno-traditional \
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-Wstrict-prototypes"
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try_cxx_flags="-Wabi \
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-Wctor-dtor-privacy \
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-Wno-deprecated \
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-Wno-non-template-friend \
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-Wno-pmf-conversions \
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-Wnon-virtual-dtor \
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-Woverloaded-virtual \
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-Wreorder \
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-Wsign-promo \
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-Wsynth"
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if test ${enable_developer} = yes; then
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try_werror=yes
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try_c_cxx_flags="${try_c_cxx_flags} -g -Werror"
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else
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try_werror=no
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try_c_cxx_flags="${try_c_cxx_flags} -DNDEBUG"
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fi
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m4_set_contains([languages], [C],
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[KYUA_CC_FLAGS(${try_c_cxx_flags} ${try_c_flags})])
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m4_set_contains([languages], [C++],
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[KYUA_CXX_FLAGS(${try_c_cxx_flags} ${try_cxx_flags})])
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])
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