mirror of https://github.com/encounter/SDL.git
Try to build with GCC's -Wdeclaration-after-statement.
This will help catch things that'll cause issues on C89 compilers before we send them on to fail on Buildbot.
This commit is contained in:
Ryan C. Gordon
parent
15bc7aea64
commit
1373e8909a
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@ -334,6 +334,24 @@ set(HAVE_ASSERTIONS ${ASSERTIONS})
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# Compiler option evaluation
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if(USE_GCC OR USE_CLANG)
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# Check for -Wall first, so later things can override pieces of it.
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check_c_compiler_flag(-Wall HAVE_GCC_WALL)
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if(HAVE_GCC_WALL)
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list(APPEND EXTRA_CFLAGS "-Wall")
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if(HAIKU)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-multichar")
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endif()
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endif()
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check_c_compiler_flag(-Wdeclaration-after-statement HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
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if(HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
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check_c_compiler_flag(-Werror=declaration-after-statement HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
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if(HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
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list(APPEND EXTRA_CFLAGS "-Werror=declaration-after-statement")
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endif()
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list(APPEND EXTRA_CFLAGS "-Wdeclaration-after-statement")
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endif()
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if(DEPENDENCY_TRACKING)
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check_c_source_compiles("
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#if !defined(__GNUC__) || __GNUC__ < 3
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@ -375,13 +393,6 @@ if(USE_GCC OR USE_CLANG)
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endif()
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set(CMAKE_REQUIRED_FLAGS ${ORIG_CMAKE_REQUIRED_FLAGS})
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check_c_compiler_flag(-Wall HAVE_GCC_WALL)
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if(HAVE_GCC_WALL)
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list(APPEND EXTRA_CFLAGS "-Wall")
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if(HAIKU)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-multichar")
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endif()
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endif()
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check_c_compiler_flag(-Wshadow HAVE_GCC_WSHADOW)
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if(HAVE_GCC_WSHADOW)
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list(APPEND EXTRA_CFLAGS "-Wshadow")
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@ -18650,6 +18650,43 @@ $as_echo "$have_gcc_preferred_stack_boundary" >&6; }
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fi
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}
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CheckDeclarationAfterStatement()
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{
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GCC -Wdeclaration-after-statement option" >&5
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$as_echo_n "checking for GCC -Wdeclaration-after-statement option... " >&6; }
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have_gcc_declaration_after_statement=no
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save_CFLAGS="$CFLAGS"
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CFLAGS="$save_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int x = 0;
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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have_gcc_declaration_after_statement=yes
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_gcc_declaration_after_statement" >&5
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$as_echo "$have_gcc_declaration_after_statement" >&6; }
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CFLAGS="$save_CFLAGS"
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if test x$have_gcc_declaration_after_statement = xyes; then
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EXTRA_CFLAGS="$EXTRA_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
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fi
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}
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CheckWarnAll()
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{
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GCC -Wall option" >&5
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@ -22894,6 +22931,8 @@ fi
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}
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CheckWarnAll
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case "$host" in
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*-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*)
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case "$host" in
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@ -22962,6 +23001,7 @@ case "$host" in
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*-*-minix*) ARCH=minix ;;
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esac
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CheckVisibilityHidden
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CheckDeclarationAfterStatement
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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@ -23392,6 +23432,7 @@ $as_echo "#define SDL_FILESYSTEM_HAIKU 1" >>confdefs.h
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ARCH=ios
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CheckVisibilityHidden
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CheckDeclarationAfterStatement
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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@ -23461,6 +23502,7 @@ $as_echo "#define SDL_FILESYSTEM_HAIKU 1" >>confdefs.h
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EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_OSX"
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CheckVisibilityHidden
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CheckDeclarationAfterStatement
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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@ -23581,6 +23623,7 @@ $as_echo "#define SDL_AUDIO_DRIVER_EMSCRIPTEN 1" >>confdefs.h
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fi
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CheckVisibilityHidden
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CheckDeclarationAfterStatement
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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@ -23630,8 +23673,6 @@ $as_echo "#define SDL_TIMER_UNIX 1" >>confdefs.h
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;;
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esac
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CheckWarnAll
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# Verify that we have all the platform specific files we need
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if test x$have_joystick != xyes; then
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34
configure.in
34
configure.in
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@ -1124,6 +1124,30 @@ CheckStackBoundary()
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fi
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}
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dnl See if GCC's -Wdeclaration-after-statement is supported.
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dnl This lets us catch things that would fail on a C89 compiler when using
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dnl a modern GCC.
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CheckDeclarationAfterStatement()
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{
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AC_MSG_CHECKING(for GCC -Wdeclaration-after-statement option)
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have_gcc_declaration_after_statement=no
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save_CFLAGS="$CFLAGS"
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CFLAGS="$save_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
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AC_TRY_COMPILE([
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int x = 0;
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],[
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],[
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have_gcc_declaration_after_statement=yes
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])
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AC_MSG_RESULT($have_gcc_declaration_after_statement)
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CFLAGS="$save_CFLAGS"
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if test x$have_gcc_declaration_after_statement = xyes; then
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EXTRA_CFLAGS="$EXTRA_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
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fi
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}
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dnl See if GCC's -Wall is supported.
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CheckWarnAll()
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{
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@ -2801,6 +2825,9 @@ AC_HELP_STRING([--enable-rpath], [use an rpath when linking SDL [[default=yes]]]
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, enable_rpath=yes)
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}
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dnl Do this on all platforms, before everything else (other things might want to override it).
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CheckWarnAll
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dnl Set up the configuration based on the host platform!
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case "$host" in
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*-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*)
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@ -2870,6 +2897,7 @@ case "$host" in
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*-*-minix*) ARCH=minix ;;
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esac
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CheckVisibilityHidden
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CheckDeclarationAfterStatement
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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@ -3196,6 +3224,7 @@ AC_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[defau
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ARCH=ios
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CheckVisibilityHidden
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CheckDeclarationAfterStatement
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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@ -3265,6 +3294,7 @@ AC_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[defau
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EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_OSX"
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CheckVisibilityHidden
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CheckDeclarationAfterStatement
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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@ -3366,6 +3396,7 @@ AC_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[defau
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fi
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CheckVisibilityHidden
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CheckDeclarationAfterStatement
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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@ -3407,9 +3438,6 @@ AC_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[defau
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;;
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esac
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dnl Do this on all platforms, after everything else.
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CheckWarnAll
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# Verify that we have all the platform specific files we need
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if test x$have_joystick != xyes; then
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