Category Archives: gcc

Fedora – F28 GCC 8 Now OK with Kernel 4.16.7, and fix for Grub-Customizer..

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Tried Kernel 4.16.7 on Fedora 28 (GCC 8.0.1), and this now compiles successfully, although still with a lot of ‘warnings’.. I use grub-customizer with each new kernel, and the F28 version of this fails: # grub-customizer Error creating proxy: The connection is closed (g-io-error-quark, 18) *** initializing (w/o specified bootloader type)… * reading partition info… /usr/include/c++/8/bits/basic_string.h:1048: std::__cxx11::basic_string<_CharT, … Continue reading →

Fedora – 28 Released, but Fails with GCC 8 and Kernel 4.16…

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Fedora 28 has been released, but this includes GCC 8 (8.0.1) which – currently – is not capable of compiling Kernel 4.16 as-is (tested with 4.16.6): ……………………………. CC /usr/src/linux-4.16.6/tools/objtool/objtool.o CC /usr/src/linux-4.16.6/tools/objtool/libstring.o CC /usr/src/linux-4.16.6/tools/objtool/str_error_r.o ../lib/str_error_r.c: In function ‘str_error_r’: ../lib/str_error_r.c:25:3: error: passing argument 1 to restrict-qualified parameter aliases with argument 5 [-Werror=restrict] snprintf(buf, buflen, “INTERNAL ERROR: strerror_r(%d, %p, %zd)=%d”, … Continue reading →

Kernel – GCC 8 Tests – Not Quite Ready…

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I decided to try updating a crash-and-burn test system to Fedora 28 (early-beta..) as this included GCC 8 (currently 8.0.1), to see how well the Kernel (4.16-rc6) compiled.. There were a lot of warnings generated: …………………… CC [M] drivers/rtc/rtc-pcf8523.o CC drivers/usb/core/file.o CC drivers/video/hdmi.o CC [M] drivers/rtc/rtc-pcf8563.o drivers/video/hdmi.c: In function ‘hdmi_spd_infoframe_init’: drivers/video/hdmi.c:171:2: warning: ‘strncpy’ specified bound 8 equals … Continue reading →

Kernel – GCC 8 Tests – Not Quite Ready…

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I decided to try updating a crash-and-burn test system to Fedora 28 (early-beta..) as this included GCC 8 (currently 8.0.1), to see how well the Kernel (4.16-rc6) compiled.. There were a lot of warnings generated: …………………… CC [M] drivers/rtc/rtc-pcf8523.o CC drivers/usb/core/file.o CC drivers/video/hdmi.o CC [M] drivers/rtc/rtc-pcf8563.o drivers/video/hdmi.c: In function ‘hdmi_spd_infoframe_init’: drivers/video/hdmi.c:171:2: warning: ‘strncpy’ specified bound 8 equals … Continue reading →

Kernel – GCC and ‘Retpoline’..

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The recent summary of Kernel 4.15 mentioned the test for ‘compliant’ versions of GCC which fully support the retpoline mitigation, but only gave an example of non-compliance: With GCC 7.2: ~]$ cat /sys/devices/system/cpu/vulnerabilities/spectre_v2  Vulnerable: Minimal generic ASM retpoline I re-created Fedora (Rawhide) GCC 7.3.1 for Fedora 27, and it gives the following, after Kernel 4.15 compilation/boot: ~]$ … Continue reading →

VMware – 12.5.8 Released – Still Incompatible..

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There has been a new release of Workstation 12.5 – 12.5.8 – and the – rather vague – release notes are here:  https://docs.vmware.com/en/VMware-Workstation-Pro/12.0/rn/workstation-1258-release-notes.html I tested this with a ‘clean’ install on my cash-and-burn system, and basically, it suffers from the same compatibility problems as 12.5.7.    GCC7, Fedora 26/27, and Kernel 14.x all cause it to fail. # … Continue reading →

Kernel – 4.13-rc6 Released – Still OK..

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Kernel 4.13-rc6 is out, and brief details of changes are here:  http://lkml.iu.edu/hypermail/linux/kernel/1708.2/03592.html As the message mentions, if all goes well, then 4.13 Final should be out in about two weeks time from now.. The release is still OK with the latest NVIDIA (tested with 384.59) and (patched) VMware 12.5.7.     Unfortunately, there is still no 12.5.8 release with … Continue reading →

VMware – 12.5.6 Breaks Fedora 26 / GCC 7 Workaround..

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I had been testing VMware 12.5.6 – unsuccessfully – with Kernel 4.12-rc2, but on reverting to Kernel 4.11.3, I found that the vmware runtime workaround for Fedora 26 / GCC 7 ( see http://rglinuxtech.com/?p=1939 ) no longer worked, and produced the same result as before the modifications – no execution, and a return to the command prompt.. … Continue reading →