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build: Use $GREP -e instead of plain grep -e

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https://bugs.freedesktop.org/show_bug.cgi?id=37388
This commit is contained in:
Benjamin Otte 2011-05-20 20:57:33 +02:00
parent bdfd860ae7
commit d11b39ea27
1 changed files with 2 additions and 1 deletions
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3
build/configure.ac.warnings
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@ -69,8 +69,9 @@ CAIRO_CFLAGS="$CAIRO_CFLAGS $WARN_CFLAGS"
# gcc from generating thousands of warnings about the misapplication of the
# attribute to void functions and variables.
AC_CACHE_CHECK([how to enable unused result warnings], cairo_cv_warn_unused_result, [
AC_REQUIRE([AC_PROG_GREP])
cairo_cv_warn_unused_result=""
if echo $WARN_CFLAGS | grep -e '-Wno-attributes' >/dev/null; then
if echo $WARN_CFLAGS | $GREP -e '-Wno-attributes' >/dev/null; then
CAIRO_CC_TRY_FLAG_SILENT(
[-Wno-attributes],
[__attribute__((__warn_unused_result__)) void f (void) {}