make: new applet

This is an experimental implementation of make for busybox-w32,
based on my public domain POSIX make:

   https://frippery.org/make/

(GitHub issue #44)

3 files changed, 9 insertions, 4 deletions

diff --git a/archival/ar.c b/archival/ar.c
index beccab217..b5565c936 100644
--- a/archival/ar.c
+++ b/archival/ar.c
@@ -30,12 +30,12 @@
 //config:config FEATURE_AR_LONG_FILENAMES
 //config:       bool "Support long filenames (not needed for debs)"
 //config:       default y
-//config:       depends on AR
+//config:       depends on AR || MAKE
 //config:       help
 //config:       By default the ar format can only store the first 15 characters
 //config:       of the filename, this option removes that limitation.
 //config:       It supports the GNU ar long filename method which moves multiple long
-//config:       filenames into a the data section of a new ar entry.
+//config:       filenames into the data section of a new ar entry.
 //config:
 //config:config FEATURE_AR_CREATE
 //config:       bool "Support archive creation"
diff --git a/archival/libarchive/Kbuild.src b/archival/libarchive/Kbuild.src
index d2f284b08..1c74250a2 100644
--- a/archival/libarchive/Kbuild.src
+++ b/archival/libarchive/Kbuild.src
@@ -47,6 +47,7 @@ lib-$(CONFIG_DPKG_DEB)                  += $(DPKG_FILES)
 
 lib-$(CONFIG_AR)                        += get_header_ar.o unpack_ar_archive.o
 lib-$(CONFIG_CPIO)                      += get_header_cpio.o
+lib-$(CONFIG_MAKE)                      += get_header_ar.o unpack_ar_archive.o
 lib-$(CONFIG_TAR)                       += get_header_tar.o unsafe_prefix.o
 lib-$(CONFIG_FEATURE_TAR_TO_COMMAND)    += data_extract_to_command.o
 lib-$(CONFIG_LZOP)                      += lzo1x_1.o lzo1x_1o.o lzo1x_d.o
diff --git a/archival/libarchive/unpack_ar_archive.c b/archival/libarchive/unpack_ar_archive.c
index 125d424c9..923a0b2ab 100644
--- a/archival/libarchive/unpack_ar_archive.c
+++ b/archival/libarchive/unpack_ar_archive.c
@@ -16,6 +16,10 @@ void FAST_FUNC unpack_ar_archive(archive_handle_t *ar_archive)
         }
         ar_archive->offset += AR_MAGIC_LEN;
 
-        while (get_header_ar(ar_archive) == EXIT_SUCCESS)
-                continue;
+        while (get_header_ar(ar_archive) == EXIT_SUCCESS) {
+#if ENABLE_MAKE
+                free(ar_archive->file_header->name);
+                ar_archive->file_header->name = NULL;
+#endif
+        }
 }