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Merge pull request #556 from RichardHitt/ignore-unused 

Fix Ubuntu build warnings by using gcc flag -Wno-unused-result
This commit is contained in:
TingPing 2013-04-22 13:54:45 -07:00
parent 9603248a5b ba1dfabf11
commit 075c5dfad6
1 changed files with 22 additions and 0 deletions
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22
configure.ac
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@ -811,6 +811,28 @@ if test x$unsigned_char = xyes; then
CFLAGS="$CFLAGS -funsigned-char"
fi
dnl does this compiler support -Wno-unused-result ?
AC_MSG_CHECKING([if gcc accepts -Wno-unused-result ])
safe_CFLAGS=$CFLAGS
CFLAGS="-Wno-unused-result"
AC_TRY_COMPILE(, [
int main () { return 0 ; }
],
[
no_unused_result=yes
AC_MSG_RESULT([yes])
], [
no_unused_result=no
AC_MSG_RESULT([no])
])
CFLAGS=$safe_CFLAGS
if test x$no_unused_result = xyes; then
CFLAGS="$CFLAGS -Wno-unused-result"
fi
dnl *********************************************************************
dnl ** FUNCTIONS/LIBS/CFLAGS ********************************************
dnl *********************************************************************