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LIBUSB_1_0_SONAME is detected since version 0.1.6 andb6f5a2fe12The detection mechanism is based on sed, here are the more relevant parts: shrext_regexp=`echo "$shrext_cmds" | sed 's/\./\\\\./'` [...] [AS_VAR_SET([ac_Lib_SONAME], [`ldd conftest$ac_exeext | grep 'lib[$2]'$shrext_regexp | sed 's/^@<:@ \t@:>@*lib[$2]'$shrext_regexp'/lib[$2]'$shrext_regexp'/;s/@<:@ \t@:>@.*$//'`])]) However, this mechanism is broken with sed 4.7 and will return the following 'silent' error: checking for SONAME of libusb-1.0... sed: -e expression #1, char 40: Invalid back reference unknown Moreover, it also raises the following build failure on one of the autobuilder because an empty line is added to LIBUSB_1_0_SONAME: checking for SONAME of libusb-1.0... checking libusb-1.0.so.0 checking for GNU extensions of errno.h... no configure: WARNING: cache variable au_cv_lib_soname_LIBUSB_1_0 contains a newline checking that generated files are newer than configure... done configure: creating ./config.status config.status: creating libusb.pc config.status: creating libusb-config config.status: creating Makefile config.status: creating libusb/Makefile config.status: creating examples/Makefile config.status: creating config.h config.status: executing depfiles commands config.status: executing libtool commands config.status: executing default commands configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-gtk-doc-html, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop, --enable-ipv6, --disable-nls configure: WARNING: cache variable au_cv_lib_soname_LIBUSB_1_0 contains a newline [7m>>> libusb-compat 0.1.7 Building[27m PATH="/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-0/output-1/host/bin:/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-0/output-1/host/sbin:/accts/mlweber1/bin:/accts/mlweber1/libexec/git-core:/accts/mlweber1/usr/bin:/accts/mlweber1/usr/local/bin:/accts/mlweber1/bin:/accts/mlweber1/libexec/git-core:/accts/mlweber1/usr/bin:/accts/mlweber1/usr/local/bin:/accts/mlweber1/bin:/accts/mlweber1/libexec/git-core:/accts/mlweber1/usr/bin:/accts/mlweber1/usr/local/bin:/accts/mlweber1/bin:/accts/mlweber1/libexec/git-core:/accts/mlweber1/usr/bin:/accts/mlweber1/usr/local/bin:/accts/mlweber1/bin:/accts/mlweber1/libexec/git-core:/accts/mlweber1/usr/bin:/accts/mlweber1/usr/local/bin:/accts/mlweber1/bin:/accts/mlweber1/libexec/git-core:/accts/mlweber1/usr/bin:/accts/mlweber1/usr/local/bin:/accts/mlweber1/bin:/accts/mlweber1/libexec/git-core:/accts/mlweber1/usr/bin:/accts/mlweber1/usr/local/bin:/accts/mlweber1/bin:/accts/mlweber1/libexec/git-core:/accts/mlweber1/usr/bin:/accts/mlweber1 /usr/local/bin:/usr/lib64/qt-3.3/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin" /usr/bin/make -j8 -C /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-0/output-1/build/libusb-compat-0.1.7/ make[1]: Entering directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-0/output-1/build/libusb-compat-0.1.7' Makefile:284: *** missing separator. Stop. We could patch patch m4/au_check_lib_soname.m4 to fix the mechanism however this is difficult without reproducing the autobuilder failure and upstream seems dead so just set LIBUSB_1_0_SONAME Fixes: - http://autobuild.buildroot.org/results/12d771d85d30594929cfe3e1c783fc70857e7f5f Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> [yann.morin.1998@free.fr: extract the actual SONAME from the library] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> (cherry picked from commit3a9261ddd9) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches