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| author | Jay Berkenbilt <ejb@ql.org> | 2013-02-24 21:29:17 +0100 |
|---|---|---|
| committer | Jay Berkenbilt <ejb@ql.org> | 2013-03-04 22:45:15 +0100 |
| commit | 7276ab934d192627c72720ae1378de93edd9e8c7 (patch) | |
| tree | 6a2771ec38bdca36cdadfc4b89fb23b3f006bace /configure.ac | |
| parent | a11081085b9db8ee40236d47849276db71ba0801 (diff) | |
| download | qpdf-7276ab934d192627c72720ae1378de93edd9e8c7.tar.zst | |
Use -Wold-style-cast for C++ if supported
Also separate C and C++ warning flags.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 8b4c444b..d8f3b6ba 100644 --- a/configure.ac +++ b/configure.ac @@ -176,6 +176,7 @@ AC_ARG_WITH(buildrules, AC_MSG_RESULT($BUILDRULES) AC_SUBST(WFLAGS) +AC_SUBST(CXXWFLAGS) qpdf_USE_EXTRA_WARNINGS=0 if test "$BUILDRULES" = "msvc"; then dnl /w14267 makes warning 4267 a level 1 warning. This warning reports @@ -197,6 +198,22 @@ if test "$qpdf_USE_EXTRA_WARNINGS" = "1"; then else AC_MSG_RESULT(no) fi +if test "$BUILDRULES" != "msvc"; then + qpdf_USE_EXTRA_WARNINGS=0 + try_flags="-Wold-style-cast" + AC_MSG_CHECKING(for whether $CXX supports $try_flags) + oCXXFLAGS=$CXXFLAGS + CXXFLAGS="$CXXFLAGS $try_flags" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int a = 1; int b = a; a = b;]])], + [qpdf_USE_EXTRA_WARNINGS=1],[qpdf_USE_EXTRA_WARNINGS=0]) + CXXFLAGS=$oCXXFLAGS + if test "$qpdf_USE_EXTRA_WARNINGS" = "1"; then + AC_MSG_RESULT(yes) + CXXWFLAGS="$try_flags" + else + AC_MSG_RESULT(no) + fi +fi if test "$BUILDRULES" = "msvc"; then try_flags="/WX" |