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Handle warning flags better
Make --enable-werror work properly on msvc, handle extra warnings flags for msvc in configure.ac instead of hardcoding into make/msvc.mk, separate warnings flags into WFLAGS in autoconf.mk to avoid duplication and to make it easier to override.
This commit is contained in:
Jay Berkenbilt
parent
32b62035ce
commit
a11081085b
@ -25,6 +25,15 @@
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2013-01-24 Jay Berkenbilt <ejb@ql.org>
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* Make --enable-werror work for MSVC, and generally handle warning
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options better for that compiler. Warning flags for that compiler
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were previous hard-coded into the build with /WX enabled
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unconditionally.
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* Split warning flags into WFLAGS in autoconf.mk to make them
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easier to override. Before they were repeated in CFLAGS and
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CXXFLAGS and were commingled with other compiler flags.
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* qpdf --check now does syntactic checks all pages' content
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streams as well as checking overall document structure. Semantic
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errors are still not checked, and there are no plans to add
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@ -12,12 +12,13 @@ docdir=@docdir@
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htmldir=@htmldir@
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pdfdir=@pdfdir
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CC=@CC@
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CFLAGS=@CFLAGS@
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WFLAGS=@WFLAGS@
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CFLAGS=@CFLAGS@ $(WFLAGS)
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LDFLAGS=@LDFLAGS@
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LIBS=@LIBS@
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CPPFLAGS=@CPPFLAGS@
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CXX=@CXX@
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CXXFLAGS=@CXXFLAGS@
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CXXFLAGS=@CXXFLAGS@ $(WFLAGS)
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AR=@AR@
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RANLIB=@RANLIB@
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DLLTOOL=@DLLTOOL@
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@ -1,5 +1,5 @@
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#!/bin/sh
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./configure --disable-test-compare-images --enable-external-libs --with-windows-wordsize=32 --with-buildrules=mingw
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./configure --disable-test-compare-images --enable-external-libs --enable-werror --with-windows-wordsize=32 --with-buildrules=mingw
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# As of autoconf 2.69 and gcc 4.6, autoconf's configure fails to
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# recognize that defining _FILE_OFFSET_BITS works with mingw32.
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# Append to qpdf-config.h rather than passing CPPFLAGS on the
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@ -1,5 +1,5 @@
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#!/bin/sh
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./configure --disable-test-compare-images --enable-external-libs --with-windows-wordsize=64 --with-buildrules=mingw \
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./configure --disable-test-compare-images --enable-external-libs --enable-werror --with-windows-wordsize=64 --with-buildrules=mingw \
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CC=x86_64-w64-mingw32-gcc \
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CXX=x86_64-w64-mingw32-g++ \
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LD=x86_64-w64-mingw32-ld \
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@ -8,4 +8,4 @@ objdump=
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if test "$wordsize" = "64"; then
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objdump=OBJDUMP=x86_64-w64-mingw32-objdump
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fi
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CC=cl CXX="cl -TP -GR" ./configure --disable-test-compare-images --enable-external-libs --with-windows-wordsize=$wordsize --with-buildrules=msvc $objdump
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CC=cl CXX="cl -TP -GR" ./configure --disable-test-compare-images --enable-external-libs --enable-werror --with-windows-wordsize=$wordsize --with-buildrules=msvc $objdump
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51
configure.ac
51
configure.ac
@ -175,39 +175,48 @@ AC_ARG_WITH(buildrules,
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[BUILDRULES=libtool])
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AC_MSG_RESULT($BUILDRULES)
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if test "$BUILDRULES" != "msvc"; then
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qpdf_USE_WALL=0
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AC_MSG_CHECKING(for whether $CC supports -Wall)
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oCFLAGS=$CFLAGS
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CFLAGS="$CFLAGS -Wall"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int a = 1; int b = a; a = b;]])],
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[qpdf_USE_WALL=1],[qpdf_USE_WALL=0])
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if test "$qpdf_USE_WALL" = "1"; then
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AC_SUBST(WFLAGS)
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qpdf_USE_EXTRA_WARNINGS=0
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if test "$BUILDRULES" = "msvc"; then
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dnl /w14267 makes warning 4267 a level 1 warning. This warning reports
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dnl potential issues between size_t, off_t, and non-compatible integer
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dnl types.
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try_flags="/w14267"
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else
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try_flags="-Wall"
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fi
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AC_MSG_CHECKING(for whether $CC supports $try_flags)
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oCFLAGS=$CFLAGS
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CFLAGS="$CFLAGS $try_flags"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int a = 1; int b = a; a = b;]])],
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[qpdf_USE_EXTRA_WARNINGS=1],[qpdf_USE_EXTRA_WARNINGS=0])
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CFLAGS=$oCFLAGS
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if test "$qpdf_USE_EXTRA_WARNINGS" = "1"; then
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AC_MSG_RESULT(yes)
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CXXFLAGS="$CXXFLAGS -Wall"
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else
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WFLAGS="$try_flags"
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else
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AC_MSG_RESULT(no)
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CFLAGS=$oCFLAGS
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fi
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fi
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if test "$BUILDRULES" != "msvc"; then
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AC_MSG_CHECKING(for whether to use -Werror)
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AC_ARG_ENABLE(werror,
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if test "$BUILDRULES" = "msvc"; then
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try_flags="/WX"
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else
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try_flags="-Werror"
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fi
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AC_MSG_CHECKING(for whether to use $try_flags)
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AC_ARG_ENABLE(werror,
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AS_HELP_STRING([--enable-werror],
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[whether to use werror (default is no)]),
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[whether to treat warnings as errors (default is no)]),
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[if test "$enableval" = "yes"; then
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qpdf_USE_WERROR=1;
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else
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qpdf_USE_WERROR=0;
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fi], [qpdf_USE_WERROR=0])
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if test "$qpdf_USE_WERROR" = "1"; then
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if test "$qpdf_USE_WERROR" = "1"; then
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AC_MSG_RESULT(yes)
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CFLAGS="$CFLAGS -Werror"
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CXXFLAGS="$CXXFLAGS -Werror"
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else
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WFLAGS="$WFLAGS $try_flags"
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else
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AC_MSG_RESULT(no)
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fi
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fi
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AC_SUBST(QPDF_SKIP_TEST_COMPARE_IMAGES)
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10
make/msvc.mk
10
make/msvc.mk
@ -19,16 +19,6 @@ endef
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CFLAGS := $(filter-out -g,$(CFLAGS))
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CXXFLAGS := $(filter-out -g,$(CXXFLAGS))
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# /WX makes all warnings errors.
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CFLAGS += /WX
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CXXFLAGS += /WX
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# /w14267 makes warning 4267 a level 1 warning. This warning reports
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# potential issues between size_t, off_t, and non-compatible integer
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# types.
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CFLAGS += /w14267
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CXXFLAGS += /w14267
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clean::
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$(RM) *.pdb
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