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f9548114d8
While cross-compiling, qt5webengine is building a host tool, 'gn', and
by default wants to link it statically with libstdc++, when the tool is
otherwise dynamically linked with other libraries:
$ ldd 3rdparty/gn/out/Release/gn
linux-vdso.so.1 (0x00007ffc1c999000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f48a3c06000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f48a3be4000)
libc.so.6 => /lib64/libc.so.6 (0x00007f48a3a1b000)
/lib64/ld-linux-x86-64.so.2 (0x00007f48a3c53000)
Not all ditributions have the static libraries installed by default; for
example, on Fedora, libstdc++-static is not installed on a fresh system,
leading to build issues:
[185/185] LINK gn
FAILED: gn
/usr/bin/g++ -O3 -fdata-sections -ffunction-sections -Wl,--gc-sections -Wl,-strip-all -Wl,--as-needed -static-libstdc++ -pthread -o gn -Wl,--start-group tools/gn/gn_main.o base.a gn_lib.a -Wl,--end-group -ldl
/usr/bin/ld : unable to find -lstdc++
[...]
Project ERROR: GN build error!
The root cause is the addition in [0] of a command line option to the
build of gn, that requests static linking with libstdc++ by default.
Explicitly pass that option now, to avoid static linking with libstdc++
and get a fully dynamicallty linked executable:
$ ldd 3rdparty/gn/out/Release/gn
linux-vdso.so.1 (0x00007ffd3f160000)
libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f68138e7000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f68138c5000)
libc.so.6 => /lib64/libc.so.6 (0x00007f68136fc000)
libm.so.6 => /lib64/libm.so.6 (0x00007f68135b6000)
/lib64/ld-linux-x86-64.so.2 (0x00007f6813b13000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f681359c000)
[0] cfab9198a9 (diff-905c8f054808213577c0a92d1b704615)
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Gaël Portay <gael.portay@collabora.com>
[yann.morin.1998@free.fr:
- rewrite the commit log with extra details and explanations
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
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