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| author | TingPing <tngpng@gmail.com> | 2013-04-22 13:54:45 -0700 |
|---|---|---|
| committer | TingPing <tngpng@gmail.com> | 2013-04-22 13:54:45 -0700 |
| commit | 075c5dfad6878a930836cdb08f36da92d3c7f430 (patch) | |
| tree | e9f4d6364253f2e87ecf8a17f647a521adba588e | |
| parent | 9603248a5bee98ce25a9d6361f3f3f89b3033441 (diff) | |
| parent | ba1dfabf116f060b243c65d0c400be1318f99047 (diff) | |
Merge pull request #556 from RichardHitt/ignore-unused
Fix Ubuntu build warnings by using gcc flag -Wno-unused-result
| -rw-r--r-- | configure.ac | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index a7c254f4..6eb5b97e 100644 --- a/configure.ac +++ b/configure.ac @@ -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 ********************************************************************* |