diff options
authorThomas Petazzoni <>2012-03-05 10:06:23 (GMT)
committer Peter Korsgaard <>2012-03-05 19:56:28 (GMT)
commit3311e41dc0f36967bbadc972839269197c5e88a1 (patch)
parent15fe22062229886848e02bb98ccd8ce62f8a2f34 (diff)
package: fix WGET download method
In cf2486bf317e4bbf88c801fb96183ba62be78cc8, we changed from using the -P option of wget (to set the output *directory*) to using the -O option (to set the output *file*). Unfortunately, wget -O has a strange behaviour: it creates an empty 0-byte file even if the download fails (for example when there is no network connection). The problem is that then Buildroot thinks the download was successful and therefore goes on with extracting the tarball. The following succession of events makes Buildroot think that the download has been sucessful: * Buildroot calls the DOWNLOAD_WGET macro with the URL of the official site * It tests if the file exists in the download directory, it doesn't exist. * It calls wget. wget fails to download the file and returns an error code, but leaves an empty file with the correct name in the downloaded directory. * Since the previously download failed, Buildroot tries another download from the Buildroot mirror ( * It tests if the file exists in the download directory... and it exists! So this second download returns with success, and Buildroot assumes the file has been downloaded properly. This scenario brings us with the following result, where the download fails, but Buildroot continues its execution and tries to extract the tarball: $ rm /opt/dl/glib-2.30.2.tar.bz2 rm: cannot remove `/opt/dl/glib-2.30.2.tar.bz2': No such file or directory $ rm -rf build/host-libglib2-2.30.2/ $ make make -C /home/thomas/projets/buildroot O=/opt/outputs/udisks/. >>> host-libglib2 2.30.2 Downloading --2012-03-03 12:06:25-- Resolving failed: Name or service not known. wget: unable to resolve host address `' >>> host-libglib2 2.30.2 Extracting bzcat /opt/dl//glib-2.30.2.tar.bz2 | tar --strip-components=1 -C /opt/outputs/udisks/build/host-libglib2-2.30.2 -xf - bzcat: Compressed file ends unexpectedly; perhaps it is corrupted? *Possible* reason follows. [...] tar: This does not look like a tar archive tar: Exiting with failure status due to previous errors make[1]: *** [/opt/outputs/udisks/build/host-libglib2-2.30.2/.stamp_extracted] Error 2 make: *** [all] Error 2 $ ls -l /opt/dl/glib-2.30.2.tar.bz2 -rw-r--r-- 1 thomas thomas 0 Mar 3 12:12 /opt/dl/glib-2.30.2.tar.bz2 Therefore, this commit modifies DOWNLOAD_WGET so that it removes the downloaded file if wget returns with an error. Signed-off-by: Thomas Petazzoni <> Acked-by: Luca Ceresoli <> Signed-off-by: Peter Korsgaard <>
1 files changed, 6 insertions, 2 deletions
diff --git a/package/ b/package/
index ea44c6c..59adce1 100644
--- a/package/
+++ b/package/
@@ -235,10 +235,14 @@ define SHOW_EXTERNAL_DEPS_HG
echo $($(PKG)_SOURCE)
+# Download a file using wget. Only download the file if it doesn't
+# already exist in the download directory. If the download fails,
+# remove the file (because wget -O creates a 0-byte file even if the
+# download fails).
test -e $(DL_DIR)/$(2) || \
- $(WGET) -O $(DL_DIR)/$(2) $(call qstrip,$(1))/$(2)
+ $(WGET) -O $(DL_DIR)/$(2) $(call qstrip,$(1))/$(2) || \
+ (rm -f $(DL_DIR)/$(2) ; exit 1)