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| author | Simon Marchi <simon.marchi@efficios.com> | 2019-11-28 16:52:59 -0500 |
|---|---|---|
| committer | Simon Marchi <simon.marchi@efficios.com> | 2019-11-28 17:02:14 -0500 |
| commit | f2ab3adfc7d07b39e5b917e0f1a0020a09036f67 (patch) | |
| tree | 0c665eac7ee0c394fb66f014fedabe3e1295c134 /m4/ax_have_epoll.m4 | |
| parent | 235d9c9a087ca8a5d7ab946818981bd9f3627145 (diff) | |
| download | autoconf-archive-f2ab3adfc7d07b39e5b917e0f1a0020a09036f67.tar.gz | |
ax_have_epoll: avoid -Wunused-but-set-variable errors
When building with -Werror -Wunused-but-set-variable, the code snippets
in this file generate a warning, causing the test to spuriously fail.
Remove the "rc" variables, since they're not used.
Sample config.log output:
configure:22489: checking for Linux epoll(7) interface
configure:22515: ccache gcc -o conftest -g3 -O0 -Wall -Werror -Wextra -Wno-type-limits -Wno-missing-declarations -Wno-missing-field-initializers -Wno-si gn-compare -Wno-implicit-fallthrough -Wno-unused-parameter -I/home/smarchi/install/include -DHAVE_LINUX_VERSION_H -L/home/smarchi/install/lib conftest.c -lurcu-cds >&5
conftest.c: In function 'main':
conftest.c:184:9: error: variable 'rc' set but not used [-Werror=unused-but-set-variable]
int fd, rc;
^~
cc1: all warnings being treated as errors
Diffstat (limited to 'm4/ax_have_epoll.m4')
| -rw-r--r-- | m4/ax_have_epoll.m4 | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/m4/ax_have_epoll.m4 b/m4/ax_have_epoll.m4 index 9d9bc87..8b23e1a 100644 --- a/m4/ax_have_epoll.m4 +++ b/m4/ax_have_epoll.m4 @@ -42,7 +42,7 @@ # and this notice are preserved. This file is offered as-is, without any # warranty. -#serial 11 +#serial 12 AC_DEFUN([AX_HAVE_EPOLL], [dnl ax_have_epoll_cppflags="${CPPFLAGS}" @@ -59,10 +59,10 @@ AC_DEFUN([AX_HAVE_EPOLL], [dnl # endif #endif ], [dnl -int fd, rc; +int fd; struct epoll_event ev; fd = epoll_create(128); -rc = epoll_wait(fd, &ev, 1, 0);])], +epoll_wait(fd, &ev, 1, 0);])], [ax_cv_have_epoll=yes], [ax_cv_have_epoll=no])]) CPPFLAGS="${ax_have_epoll_cppflags}" @@ -89,11 +89,11 @@ AC_DEFUN([AX_HAVE_EPOLL_PWAIT], [dnl #include <sys/epoll.h> #include <signal.h> ], [dnl -int fd, rc; +int fd; struct epoll_event ev; fd = epoll_create(128); -rc = epoll_wait(fd, &ev, 1, 0); -rc = epoll_pwait(fd, &ev, 1, 0, (sigset_t const *)(0));])], +epoll_wait(fd, &ev, 1, 0); +epoll_pwait(fd, &ev, 1, 0, (sigset_t const *)(0));])], [ax_cv_have_epoll_pwait=yes], [ax_cv_have_epoll_pwait=no])]) CPPFLAGS="${ax_have_epoll_cppflags}" |