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| -rw-r--r-- | unit/atf-src/m4/developer-mode.m4 | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/unit/atf-src/m4/developer-mode.m4 b/unit/atf-src/m4/developer-mode.m4 new file mode 100644 index 0000000..9c9118b --- /dev/null +++ b/unit/atf-src/m4/developer-mode.m4 @@ -0,0 +1,112 @@ +dnl Copyright 2010 Google Inc. +dnl All rights reserved. +dnl +dnl Redistribution and use in source and binary forms, with or without +dnl modification, are permitted provided that the following conditions are +dnl met: +dnl +dnl * Redistributions of source code must retain the above copyright +dnl notice, this list of conditions and the following disclaimer. +dnl * Redistributions in binary form must reproduce the above copyright +dnl notice, this list of conditions and the following disclaimer in the +dnl documentation and/or other materials provided with the distribution. +dnl * Neither the name of Google Inc. nor the names of its contributors +dnl may be used to endorse or promote products derived from this software +dnl without specific prior written permission. +dnl +dnl THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +dnl "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +dnl LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +dnl A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +dnl OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +dnl SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +dnl LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +dnl DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +dnl THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +dnl (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +dnl OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +dnl \file developer-mode.m4 +dnl +dnl "Developer mode" is a mode in which the build system reports any +dnl build-time warnings as fatal errors. This helps in minimizing the +dnl amount of trivial coding problems introduced in the code. +dnl Unfortunately, this is not bullet-proof due to the wide variety of +dnl compilers available and their different warning diagnostics. +dnl +dnl When developer mode support is added to a package, the compilation will +dnl gain a bunch of extra warning diagnostics. These will NOT be enforced +dnl unless developer mode is enabled. +dnl +dnl Developer mode is enabled when the user requests it through the +dnl configure command line, or when building from the repository. The +dnl latter is to minimize the risk of committing new code with warnings +dnl into the tree. + + +dnl Adds "developer mode" support to the package. +dnl +dnl This macro performs the actual definition of the --enable-developer +dnl flag and implements all of its logic. See the file-level comment for +dnl details as to what this implies. +AC_DEFUN([KYUA_DEVELOPER_MODE], [ + m4_foreach([language], [$1], [m4_set_add([languages], language)]) + + AC_ARG_ENABLE( + [developer], + AS_HELP_STRING([--enable-developer], [enable developer features]),, + [if test -d ${srcdir}/.git; then + AC_MSG_NOTICE([building from HEAD; developer mode autoenabled]) + enable_developer=yes + else + enable_developer=no + fi]) + + # + # The following warning flags should also be enabled but cannot be. + # Reasons given below. + # + # -Wold-style-cast: Raises errors when using TIOCGWINSZ, at least under + # Mac OS X. This is due to the way _IOR is defined. + # + + try_c_cxx_flags="-D_FORTIFY_SOURCE=2 \ + -Wall \ + -Wcast-qual \ + -Wextra \ + -Wpointer-arith \ + -Wredundant-decls \ + -Wreturn-type \ + -Wshadow \ + -Wsign-compare \ + -Wswitch \ + -Wwrite-strings" + + try_c_flags="-Wmissing-prototypes \ + -Wno-traditional \ + -Wstrict-prototypes" + + try_cxx_flags="-Wabi \ + -Wctor-dtor-privacy \ + -Wno-deprecated \ + -Wno-non-template-friend \ + -Wno-pmf-conversions \ + -Wnon-virtual-dtor \ + -Woverloaded-virtual \ + -Wreorder \ + -Wsign-promo \ + -Wsynth" + + if test ${enable_developer} = yes; then + try_werror=yes + try_c_cxx_flags="${try_c_cxx_flags} -g -Werror" + else + try_werror=no + try_c_cxx_flags="${try_c_cxx_flags} -DNDEBUG" + fi + + m4_set_contains([languages], [C], + [KYUA_CC_FLAGS(${try_c_cxx_flags} ${try_c_flags})]) + m4_set_contains([languages], [C++], + [KYUA_CXX_FLAGS(${try_c_cxx_flags} ${try_cxx_flags})]) +]) |