GPL/CCO: Fedora 38 driver module build takes hours instead of minutes
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FYI: The driver's Linux specific content if GPL. Everything else is CC0.
I made a virgin installation of Fedora 38. To verify that all was setup suitably, I went on to build one of my drivers. The output to the screen was slightly different than previous Fedora releases, but such changes are common. What was new was that the build takes a long time - a very long time. At present, three different builds have been running for over 22 hours. Each build should have taken about seven minutes. Looking at the .o file dates, it emphasized texttakes about 20 minutes to compile each driver source file.
Each eventually completed successfully after about 25 hours.
I'm seeking assistance to correct the excruciatingly slow driver builds. Any help would be greatly appreciated.
Thank you,
**Generate the problem:**
1. Download the "Fedora Workstation 38 Live ISO" image for "For Intel and AMD x86_64 systems" from "https://fedoraproject.org/workstation/download/ ".
2. Install to suitable media.
3. Boot the installable media and perform installation.
4. Boot to the virgin installation and proceed with user account generation and so forth.
5. Install various packages: elfutils-libelf-devel, "kernel-headers-xxx" for current kernel version, "kernel-devel-xxx" for current kernel version
6. Download the driver archive from the General Standards web site (the version number will change over time): http://www.generalstandards.com/downloads/24dsi6c500k.linux.2.3.104.47.1.tar.gz
7. Decompress the archive: tar -xf ./Download/24dsi6c500k.linux.2.3.104.47.0.tar.gz
8. Change into the driver directory: cd 24dsi6c500k/driver
9. Build the driver: make -f Makefile
10. Some initial output is generated, but the build output otherwise proceeds at about one source file compiled every 20 minutes. The final steps take even longer.
**The output generated is as follows:**
make: Entering directory '/usr/src/kernels/6.2.9-300.fc38.x86_64'
warning: the compiler differs from the one used to build the kernel
The kernel was built by: gcc (GCC) 13.0.1 20230318 (Red Hat 13.0.1-0)
You are using: gcc (GCC) 13.0.1 20230401 (Red Hat 13.0.1-0)
CC [M] /root/c/gsc/24dsi6c500k/linux/driver/close.o
CC [M] /root/c/gsc/24dsi6c500k/linux/driver/device.o
CC [M] /root/c/gsc/24dsi6c500k/linux/driver/io.o
....
CC [M] /root/c/gsc/24dsi6c500k/linux/driver/os_spinlock.o
CC [M] /root/c/gsc/24dsi6c500k/linux/driver/os_time.o
CC [M] /root/c/gsc/24dsi6c500k/linux/driver/os_write.o"warning: the compiler differs from the one used to build the kernel
The kernel was built by: gcc (GCC) 13.0.1 20230318 (Red Hat 13.0.1-0)
You are using: gcc (GCC) 13.2.1 20230728 (Red Hat 13.2.1-0)warning: the compiler differs from the one used to build the kernel
The kernel was built by: gcc (GCC) 13.0.1 20230318 (Red Hat 13.0.1-0)
You are using: gcc (GCC) 13.0.1 20230401 (Red Hat 13.0.1-0)TARGET := 24dsi6c500k
.NOTPARALLEL: %.o
OBJ_FILES = \
close.o \
device.o \
io.o \
ioctl.o \
irq.o \
open.o \
read.o \
reg.o \
\
gsc_bar.o \
gsc_close.o \
gsc_dma.o \
gsc_dma_pci.o \
gsc_eeprom.o \
gsc_endian.o \
gsc_endian_pci.o \
gsc_init.o \
gsc_io.o \
gsc_ioctl.o \
gsc_irq.o \
gsc_irq_pci.o \
gsc_open.o \
gsc_read.o \
gsc_reg.o \
gsc_utils.o \
gsc_wait.o \
gsc_write.o \
\
os_bar.o \
os_close.o \
os_event.o \
os_init.o \
os_ioctl.o \
os_irq.o \
os_kernel_2_2.o \
os_kernel_2_4.o \
os_kernel_2_6.o \
os_kernel_3.o \
os_kernel_4.o \
os_kernel_5.o \
os_kernel_6.o \
os_mem.o \
os_metrics.o \
os_open.o \
os_pci.o \
os_proc.o \
os_read.o \
os_reg.o \
os_sem.o \
os_spinlock.o \
os_time.o \
os_write.o
###############################################################################
# Everything here is needed so we can access os_makefile.inc.
.EXPORT_ALL_VARIABLES:
# Locate the source from the starting directory.
ifndef GSC_DEV_DIR
GSC_DEV_DIR := $(shell pwd)
endif
include ${GSC_DEV_DIR}/os_makefile.incdefault: all
# Identify the /dev/nul(l) device
NULL := $(shell ls /dev/nu[l]* | grep -w null | wc -l )
NULL := $(shell expr ${NULL})
ifeq ("${NULL}","1")
NULL := /dev/null
else
NULL := /dev/nul
endif
.PHONY: all clean default makefile release
# Most of this is ignored by the 2.6 (and later) module builder.
CC = gcc
CC_FLAGS += -c -O6 -pipe -fomit-frame-pointer -Wall
CC_FLAGS += -D__KERNEL__ -DLINUX
CC_FLAGS += -I. -I${KERNELDIR}
DEP_FILE = ${GSC_DEV_DIR}/makefile.dep
KERNELDIR =
KERNELVER = $(shell uname -r | cut -d . -f1-2 )
KERNELMAJOR = $(shell uname -r | cut -d . -f1 )
RELEASE_RM = ${OBJ_FILES} .tmp* .*.o.cmd .*.ko.cmd .*.mod.cmd .*.ko.*.cmd *.ko.unsigned *.mod.* *.mod Modules*
# kernel 2.2 ==================================================================
ifeq ("${KERNELVER}","2.2")
KERNELDIR = /usr/src/linux
MODULE_NAME = ${TARGET}.o
${MODULE_NAME}: ${OBJ_FILES}
@echo ==== Linking: $@
@ld -r -o $@ ${OBJ_FILES}
endif
# kernel 2.4 ==================================================================
ifeq ("${KERNELVER}","2.4")
K_DIR := $(shell ls -d /usr/src/linux/include 2>/dev/null | wc -l )
K_DIR := $(shell echo $(K_DIR) | sed -e 's/[ \t]*//g')
ifeq ("${K_DIR}","1")
KERNELDIR = /usr/src/linux/include
else
KERNELDIR = /usr/src/linux-2.4/include
endif
MODULE_NAME = ${TARGET}.o
${MODULE_NAME}: ${OBJ_FILES}
@echo ==== Linking: $@
@ld -r -o $@ ${OBJ_FILES}
endif
# kernel 2.6 ==================================================================
ifeq ("${KERNELVER}","2.6")
${TARGET}-objs = ${OBJ_FILES}
KERNELDIR = /lib/modules/$(shell uname -r)/build
MODULE_NAME = ${TARGET}.ko
obj-m = ${TARGET}.o
PWD = $(shell pwd)
RELEASE_RM += ${TARGET}.o Module.symvers
${MODULE_NAME}: $(shell ls ${GSC_DEV_DIR}/*.[ch])
@-chmod +rw ${DEP_FILE}
@-echo -n > ${DEP_FILE}
@make -C ${KERNELDIR} SUBDIRS=${PWD} modules
@strip -d --strip-unneeded $@
@rm -f *.mod.c
endif
# kernel 3.x ==================================================================
ifeq ("${KERNELMAJOR}","3")
${TARGET}-objs = ${OBJ_FILES}
KERNELDIR = /lib/modules/$(shell uname -r)/build
MODULE_NAME = ${TARGET}.ko
obj-m = ${TARGET}.o
PWD = $(shell pwd)
RELEASE_RM += ${TARGET}.o Module.symvers
${MODULE_NAME}: $(shell ls ${GSC_DEV_DIR}/*.[ch])
@-chmod +rw ${DEP_FILE}
@-echo -n > ${DEP_FILE}
@make -C ${KERNELDIR} SUBDIRS=${PWD} modules
@strip -d --strip-unneeded $@
@rm -f *.mod.c
endif
# kernel 4.x ==================================================================
ifeq ("${KERNELMAJOR}","4")
${TARGET}-objs = ${OBJ_FILES}
KERNELDIR = /lib/modules/$(shell uname -r)/build
MODULE_NAME = ${TARGET}.ko
obj-m = ${TARGET}.o
PWD = $(shell pwd)
RELEASE_RM += ${TARGET}.o Module.symvers
${MODULE_NAME}: $(shell ls ${GSC_DEV_DIR}/*.[ch])
@-chmod +rw ${DEP_FILE}
@-echo -n > ${DEP_FILE}
@make -C ${KERNELDIR} SUBDIRS=${PWD} modules
@strip -d --strip-unneeded $@
@rm -f *.mod.c
endif
# kernel 5.x ==================================================================
ifeq ("${KERNELMAJOR}","5")
${TARGET}-objs = ${OBJ_FILES}
KERNELDIR = /lib/modules/$(shell uname -r)/build
MODULE_NAME = ${TARGET}.ko
obj-m = ${TARGET}.o
PWD = $(shell pwd)
RELEASE_RM += ${TARGET}.o Module.symvers
${MODULE_NAME}: $(shell ls ${GSC_DEV_DIR}/*.[ch])
@-chmod +rw ${DEP_FILE}
@-echo -n > ${DEP_FILE}
@make -C ${KERNELDIR} M=${PWD} modules
@strip -d --strip-unneeded $@
@rm -f *.mod.c
endif
# kernel 6.x ==================================================================
ifeq ("${KERNELMAJOR}","6")
${TARGET}-objs = ${OBJ_FILES}
KERNELDIR = /lib/modules/$(shell uname -r)/build
MODULE_NAME = ${TARGET}.ko
obj-m = ${TARGET}.o
PWD = $(shell pwd)
RELEASE_RM += ${TARGET}.o Module.symvers
${MODULE_NAME}: $(shell ls ${GSC_DEV_DIR}/*.[ch])
@-chmod +rw ${DEP_FILE}
@-echo -n > ${DEP_FILE}
@make -C ${KERNELDIR} M=${PWD} modules
@strip -d --strip-unneeded $@
@rm -f *.mod.c
endif
# kernel OTHER ================================================================
ifeq ("${KERNELDIR}","")
KERNELDIR = KERNELDIR_os_makefile.inc_not_known_at_this_time
MODULE_NAME = MODULE_NAME_os_makefile.inc_not_known_at_this_time
${MODULE_NAME}:
@echo ERROR: KERNEL ${KERNELVER} IS NOT SUPPORTED BY THIS MAKEFILE.
@_ERROR_ERROR_ERROR_ERROR_ERROR_ERROR_ERROR_ERROR_ERROR
endif
# COMMON ======================================================================
#This is ignored by the 2.6 (and later) module builder.
.c.o:
@echo == Compiling: $ .tmp1
@# Remove trailing white space and backslash, if present.
@-sed -e "s/[ ]*[\\\\]//g" .tmp2
@# Put everything on seperate lines.
@-tr [:space:] \\n .tmp3
@# Remove all of the system include files.
@-grep -v "^[ ]*/" .tmp4
@# Remove all empty lines.
@-grep [[:alnum:]] .tmp5
@# Put everything on the same line.
@-tr '\n' '\040' .tmp6
@-echo -e '\012' >> .tmp6
@# Add all the other dependencies to the end of this file.
@-echo >> ${DEP_FILE}
@-grep -v "^[ ]*$@" > .tmp6
@# Remove blank lines from the list.
@-grep "[[:alnum:]]" .tmp7
@# Sort the list and put it in the dependency file.
@-sort ${DEP_FILE}
@# Cleanup.
@rm -f .tmp?
@rm -r -f -d .tmp*\*
@# Compile the module.
@${CC} ${CC_FLAGS} $ ${DEP_FILE}
${DEP_FILE}:
@echo ==== Creating: $@
@echo > ${DEP_FILE}
@-chmod +rw ${DEP_FILE}
include ${DEP_FILE}
Asked by Don
(11 rep)
Aug 22, 2023, 01:01 PM
Last activity: Oct 5, 2023, 09:30 PM
Last activity: Oct 5, 2023, 09:30 PM