diff options
Diffstat (limited to 'src/m4/ev++.m4')
| -rw-r--r-- | src/m4/ev++.m4 | 59 |
1 files changed, 44 insertions, 15 deletions
diff --git a/src/m4/ev++.m4 b/src/m4/ev++.m4 index 573f9da..c81ea09 100644 --- a/src/m4/ev++.m4 +++ b/src/m4/ev++.m4 @@ -47,12 +47,17 @@ AC_DEFUN([EV_DEVEL], if test -z "$ac_cv_ev_lib" then + AC_MSG_RESULT([no]) AC_MSG_ERROR([Didn't find the libev library dir in '$EV_lib_check']) fi case "$ac_cv_ev_lib" in - /* ) ;; - * ) AC_MSG_ERROR([The libev library directory ($ac_cv_ev_lib) must be an absolute path.]) ;; + /* ) + ;; + * ) + AC_MSG_RESULT([]) + AC_MSG_ERROR([The libev library directory ($ac_cv_ev_lib) must be an absolute path.]) + ;; esac ]) AC_SUBST([EV_LIB_DIR],[$ac_cv_ev_lib]) @@ -73,12 +78,17 @@ AC_DEFUN([EV_DEVEL], if test -z "$ac_cv_ev_inc" then + AC_MSG_RESULT([no]) AC_MSG_ERROR([Didn't find the libev header dir in '$EV_inc_check']) fi case "$ac_cv_ev_inc" in - /* ) ;; - * ) AC_MSG_ERROR([The libev header directory ($ac_cv_ev_inc) must be an absolute path.]) ;; + /* ) + ;; + * ) + AC_MSG_RESULT([]) + AC_MSG_ERROR([The libev header directory ($ac_cv_ev_inc) must be an absolute path.]) + ;; esac ]) AC_SUBST([EV_INC_DIR],[$ac_cv_ev_inc]) @@ -87,20 +97,39 @@ AC_DEFUN([EV_DEVEL], dnl Now check that the above checks resulted in -I and -L flags that dnl let us build actual programs against libev. dnl - LDFLAGS_SAVED="$LDFLAGS" - CPPFLAGS_SAVED="$CPPFLAGS" case "$ac_cv_ev_lib" in - /usr/lib) ;; - *) LDFLAGS="$LDFLAGS -L${ac_cv_ev_lib}" ;; + /usr/lib) + ;; + *) + LDFLAGS="$LDFLAGS -L${ac_cv_ev_lib}" + ;; esac CPPFLAGS="$CPPFLAGS -I${ac_cv_ev_inc}" AC_MSG_CHECKING([that we can build libev programs]) - AC_COMPILE_IFELSE( - [AC_LANG_PROGRAM([#include <ev++.h>], - [ev::io i])], - AC_MSG_RESULT([yes]), - AC_MSG_ERROR([no])) - LDFLAGS="$LDFLAGS_SAVED" - CPPFLAGS="$CPPFLAGS_SAVED" + AC_EGREP_CPP( + [bad_gcc_libev_ver], + [ +#include <ev.h> +#if __GNUC__ && (__GNUC__ < 4 || __GNUC__ == 4 && __GNUC_MINOR__ < 9) && EV_VERSION_MAJOR == 4 && EV_VERSION_MINOR == 18 + bad_gcc_libev_ver +#endif + ], + [AC_MSG_RESULT([no]) + AC_MSG_ERROR([GCC versions prior to 4.9 cannot compile libev 4.18])], + [], + ) + + LIBS="-lev $LIBS" + AC_LANG_PUSH([C++]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [#include <ev++.h>], + [ev::io i]) + ], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_MSG_FAILURE([Cannot build libev programs])] + ) + AC_LANG_POP([C++]) ]) dnl End EV_DEVEL |