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acpitool requires threads.
However, it does not check for threads in its configure script, so
forgets to link with -pthreads, so fails to build in static-only
scenarii.
However, upstream has been dead for the past 7+ years now, so there is
not much point trying to fix this. Besides, a system with ACPI is most
probably a biggish system, so shared libs will probably be enabled, so
we just require shared libs.
As for bfin, the cryptic configure failure:
configure: error: C++ compiler cannot create executables
is due to the order in which AC_PROG_CXX and AC_PROG_CC are called.
Calling AC_PROG_CC first fixes this error message in this specific case.
However, this is a toolchain issue, as this does not occur for other
toolchains.
Still, inverting the call would anyway then cause linking errors:
/home/ymorin/dev/buildroot/O/host/usr/bin/bfin-linux-g++ -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -o acpitool main.o acpitool.o ac_adapter.o toshiba.o asus.o thinkpad.o cpu.o battery.o freq.o -lgcc
acpitool.o: In function `Has_ACPI(char*)':
acpitool.cpp:(.text+0x1be): undefined reference to `_Unwind_Resume'
acpitool.o: In function `Get_Kernel_Version(char*, int)':
acpitool.cpp:(.text+0x2aa): undefined reference to `_Unwind_Resume'
acpitool.o: In function `Set_Kernel_Version()':
acpitool.cpp:(.text+0x43e): undefined reference to `_Unwind_Resume'
acpitool.o: In function `Do_Fan_Info(int)':
acpitool.cpp:(.text+0x60a): undefined reference to `_Unwind_Resume'
acpitool.o: In function `Show_WakeUp_Devices(int)':
acpitool.cpp:(.text+0x770): undefined reference to `_Unwind_Resume'
acpitool.o:acpitool.cpp:(.text+0x9ca): more undefined references to `_Unwind_Resume' follow
/home/ymorin/dev/buildroot/O/host/opt/ext-toolchain/bin/../lib/gcc/bfin-buildroot-linux-uclibc/6.1.0/../../../../bfin-buildroot-linux-uclibc/bin/ld: acpitool: hidden symbol `___udivsi3' in /home/ymorin/dev/buildroot/O/host/opt/ext-toolchain/bin/../lib/gcc/bfin-buildroot-linux-uclibc/6.1.0/libgcc.a(_udivsi3.o) is referenced by DSO
/home/ymorin/dev/buildroot/O/host/opt/ext-toolchain/bin/../lib/gcc/bfin-buildroot-linux-uclibc/6.1.0/../../../../bfin-buildroot-linux-uclibc/bin/ld: final link failed: Bad value
collect2: error: ld returned 1 exit status
Again, because upstream is dead, there's not much point trying to fix
this... And since there's not many chances that a bfin board has ACPI,
we just disable acpitool for bfin.
Fixes various build failures:
http://autobuild.buildroot.org/results/6fc/6fc568228b7c5c5be9e35aae73fb09b431896325/
http://autobuild.buildroot.org/results/f1e/f1eb711123c2d8aea8399b8984a007afec4f65fb/
http://autobuild.buildroot.org/results/70e/70eb7d7ed93a122b4c7a9890877e721b8d777b00/
[...]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Erico Nunes <nunes.erico@gmail.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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