libarchive on AIX

README.md

Compiles cleanly. I tested against git master. Follow this:

bash build/autogen.sh # if you cloned from git instead of using a release tarball
CONFIG_SHELL=`which bash` AR=/usr/bin/ar NM=/usr/bin/nm LD=/usr/bin/ld ./configure
gmake # you can parallelize this with -j<NUMPROCS> - i recommend setting that to CPU cores

You will have to apply a patch included with this document; a real solution would be to fix it in configure.ac, but this is left as an exercise to the reader.

diff.diff

diff --git a/libarchive/archive_read_disk_posix.c b/libarchive/archive_read_disk_posix.c
index cdf7541..51bc0b1 100644
--- a/libarchive/archive_read_disk_posix.c
+++ b/libarchive/archive_read_disk_posix.c
@@ -2363,7 +2363,8 @@ tree_dir_next_posix(struct tree *t)
 #else /* HAVE_FDOPENDIR */
                if (tree_enter_working_dir(t) == 0) {
                        t->d = opendir(".");
-#if HAVE_DIRFD || defined(dirfd)
+/* AIX defined dirfd for years but it wasn't in libc until AIX 7.1, WTF?*/
+#if (HAVE_DIRFD || defined(dirfd)) && !defined(_AIX)
                        __archive_ensure_cloexec_flag(dirfd(t->d));
 #endif
                }