diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/configure.ac b/configure.ac index 4474d40..790329c 100644 --- a/configure.ac +++ b/configure.ac @@ -4,11 +4,40 @@ AC_CANONICAL_TARGET AM_INIT_AUTOMAKE AM_SILENT_RULES([yes]) AM_MAINTAINER_MODE + +if test -z "$CFLAGS"; then + CFLAGS="-Os" +fi + +AC_CANONICAL_HOST AC_PROG_CC AC_PROG_CC_STDC +AC_PROG_INSTALL AC_TYPE_SIZE_T +# check for spectre mitigation +saved_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -mindirect-branch=thunk" +AC_MSG_CHECKING([if ${CC} supports -mindirect-branch=thunk spectre mitigation]) +AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])], + [ AC_MSG_RESULT([yes]) + SPECTRE_MIT="-mindirect-branch=thunk" ], + AC_MSG_RESULT([no])) +CFLAGS="$saved_CFLAGS" +AC_SUBST(SPECTRE_MIT) + +# check for -fvisibility=hidden compiler support (GCC >= 4) +saved_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -fvisibility=hidden -fvisibility-inlines-hidden" +AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden -fvisibility-inlines-hidden]) +AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])], + [ AC_MSG_RESULT([yes]) + SYMBOL_VISIBILITY="-fvisibility=hidden" ], + AC_MSG_RESULT([no])) +CFLAGS="$saved_CFLAGS" +AC_SUBST(SYMBOL_VISIBILITY) + AC_CHECK_LIB(socket, connect) AC_CHECK_LIB(pthread, pthread_create) @@ -16,14 +45,18 @@ PKG_CHECK_MODULES([libssh], [libssh >= 0.7.3]) AC_SUBST([libssh_CFLAGS]) AC_SUBST([libssh_LIBS]) -dnl Check for header files that do not exist on all platforms +dnl Check for std header files +AC_CHECK_HEADERS([stdio.h stdlib.h unistd.h string.h ctype.h assert.h sched.h signal.h errno.h]) + +dnl Check for system specific header files +AC_CHECK_HEADERS([pty.h linux/capability.h sys/types.h sys/wait.h sys/stat.h]) AC_CHECK_HEADERS([libutil.h pthread.h pty.h strings.h syslog.h sys/prctl.h \ - sys/uio.h util.h]) + sys/uio.h poll.h sys/epoll.h util.h]) -dnl Most systems require linking against libutil.so in order to get login_tty() -AC_CHECK_FUNCS(login_tty, [], - [AC_CHECK_LIB(util, login_tty, +dnl Most systems require linking against libutil.so in order to get forkpty() +AC_CHECK_FUNCS(forkpty, [], + [AC_CHECK_LIB(util, forkpty, [LIBS="-lutil $LIBS" - AC_DEFINE(HAVE_LOGIN_TTY)])]) + AC_DEFINE(HAVE_FORKPTY)])]) AC_OUTPUT(Makefile src/Makefile) |