diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ChangeLog | 6 | ||||
| -rw-r--r-- | m4/readline.m4 | 23 |
2 files changed, 28 insertions, 1 deletions
diff --git a/m4/ChangeLog b/m4/ChangeLog index 81fdcec0..17c482cb 100644 --- a/m4/ChangeLog +++ b/m4/ChangeLog @@ -1,3 +1,9 @@ +2014-10-30 Arnold D. Robbins <arnold@skeeve.com> + + * readline.m4: Enable cross compiling. Thanks to + Christer Solskogen <christer.solskogen@gmail.com> for + motivating and testing. + 2014-04-08 Arnold D. Robbins <arnold@skeeve.com> * 4.1.1: Release tar ball made. diff --git a/m4/readline.m4 b/m4/readline.m4 index 77ed8b25..740b9c7b 100644 --- a/m4/readline.m4 +++ b/m4/readline.m4 @@ -62,7 +62,28 @@ dnl action if true: dnl action if false: [_found_readline=no], dnl action if cross compiling: - [_found_readline=no] + AC_TRY_LINK([#include <stdio.h> +#include <readline/readline.h> +#include <readline/history.h>], dnl includes + dnl function body + [ + int fd; + char *line; + + close(0); + close(1); + fd = open("/dev/null", 2); /* should get fd 0 */ + dup(fd); + line = readline("giveittome> "); + + /* some printfs don't handle NULL for %s */ + printf("got <%s>\n", line ? line : "(NULL)"); +], +dnl action if found: + [_found_readline=yes], +dnl action if not found: + [_found_readline=no] + ) ) AC_MSG_RESULT([$_found_readline]) |