diff options
Diffstat (limited to 'm4/emacs-lib.m4')
| -rw-r--r-- | m4/emacs-lib.m4 | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/m4/emacs-lib.m4 b/m4/emacs-lib.m4 new file mode 100644 index 0000000..6562cfd --- /dev/null +++ b/m4/emacs-lib.m4 @@ -0,0 +1,24 @@ +# AX_EMACS_RUN_IFELSE(PROGRAM, ACTION-IF-TRUE, ACTION-IF-FALSE) +# ------------------------------------------------------------- +# Run PROGRAM in emacs. If it finishes successfully, execute +# ACTION-IF-TRUE, else ACTION-IF-FALSE. +AC_DEFUN([AX_EMACS_RUN_IFELSE], +[cat >conftest.el <<EOF +$1 +EOF +AC_RUN_LOG([$EMACS -batch -l conftest.el]) +AS_IF([test $ac_status -eq 0], [$2], [$3])]) + +# AX_CHECK_EMACS_LIB(LIBRARY, ACTION-IF-PRESENT, ACTION-IF-NOT) +# ------------------------------------------------------------- +# Check whether emacs can load LIBRARY with require. Execute +# ACTION-IF-PRESENT if it can, else ACTION-IF-NOT. +AC_DEFUN([AX_CHECK_EMACS_LIB], +[ +AC_CACHE_CHECK([whether $EMACS has library $1], + [AS_TR_SH([ax_cv_emacs_lib_$1])], + [AX_EMACS_RUN_IFELSE([(require '$1)], + [AS_TR_SH([ax_cv_emacs_lib_$1])=yes], + [AS_TR_SH([ax_cv_emacs_lib_$1])=no])]) +AS_IF([test $AS_TR_SH([ax_cv_emacs_lib_$1]) = yes], [$2], [$3]) +]) |