I am trying to compile linux driver I found on this link.
I downloaded linux-headers-3.16.0-30-generic into /usr/src folder.
I found modversions.h in linux-headers-3.16.0-30-generic/include/config/ and it is empty.
My makefile looks like this:
INCLUDEDIR = /usr/src/linux-headers-3.16.0-30-generic/include
CFLAGS = -c -D__KERNEL__ -DMODULE -O -Wall -I$(INCLUDEDIR)
VER = $(shell awk -F\" '/REL/ {print $$2}' $(INCLUDEDIR)/linux/version.h)
OBJS = myaudio.o
all: $(OBJS)
myaudio.o:
cc $(CFLAGS) myaudio.c
install:
install -c myaudio.o
clean:
rm -f myaudio.o core
I have tried to pass -I /usr/src/linux-3.16.0-30-generic/include/config into make command.
Related
I am trying to add this package called sane-airscan to my yocto build. My experience with yocto is very basic.I do not know how to write a recipe for this one
This is the MakeFile for the above mentioned one
# USER-SETTABLE VARIABLES
#
# The following variables can be overridden by user (i.e.,
# make install DESTDIR=/tmp/xxx):
#
# Name Default Description
# ---- ------- -----------
# DESTDIR Destination directory for make install
# PREFIX Non-standard: appended to DESTDIR
# CC gcc C compiler
# CPPFLAGS C preprocessor flags
# CFLAGS -O2 -g -W -Wall -Werror C compiler flags
# LDFLAGS Linker flags
# COMPRESS gzip Program to compress man page, or ""
# MANDIR /usr/share/man/ Where to install man page
CC = gcc
COMPRESS = gzip
CFLAGS = -O2 -g -W -Wall -Werror
MANDIR = /usr/share/man/
PKG_CONFIG = /usr/bin/pkg-config
# These variables are not intended to be user-settable
OBJDIR = objs/
BINDIR = /usr/bin
CONFDIR = /etc/sane.d
LIBDIR := $(shell $(PKG_CONFIG) --variable=libdir sane-backends)
BACKEND = libsane-airscan.so.1
DISCOVER = airscan-discover
LIBAIRSCAN = $(OBJDIR)/libairscan.a
MAN_DISCOVER = $(DISCOVER).1
MAN_DISCOVER_TITLE = "SANE Scanner Access Now Easy"
MAN_BACKEND = sane-airscan.5
MAN_BACKEND_TITLE = "AirScan (eSCL) and WSD SANE backend"
DEPENDS := avahi-client avahi-glib libjpeg libsoup-2.4 libxml-2.0
DEPENDS += libpng
# Sources and object files
SRC = $(wildcard airscan-*.c) sane_strstatus.c
OBJ = $(addprefix $(OBJDIR), $(SRC:.c=.o))
# Obtain CFLAGS and LDFLAGS for dependencies
airscan_CFLAGS = $(CFLAGS)
airscan_CFLAGS += -fPIC
airscan_CFLAGS += $(foreach lib, $(DEPENDS), $(shell pkg-config --cflags $(lib)))
airscan_LIBS := $(foreach lib, $(DEPENDS), $(shell pkg-config --libs $(lib))) -lm
airscan_LDFLAGS = $(LDFLAGS)
airscan_LDFLAGS += $(airscan_LIBS)
airscan_LDFLAGS += -Wl,--version-script=airscan.sym
# This magic is a workaround for libsoup bug.
#
# We are linked against libsoup. If SANE backend goes unloaded
# from the memory, all libraries it is linked against also will
# be unloaded (unless main program uses them directly).
#
# Libsoup, unfortunately, doesn't unload correctly, leaving its
# types registered in GLIB. Which sooner or later leads program to
# crash
#
# The workaround is to prevent our backend's shared object from being
# unloaded when not longer in use, and these magical options do it
# by adding NODELETE flag to the resulting ELF shared object
airscan_LDFLAGS += -Wl,-z,nodelete
$(OBJDIR)%.o: %.c Makefile airscan.h
mkdir -p $(OBJDIR)
$(CC) -c -o $# $< $(CPPFLAGS) $(airscan_CFLAGS)
.PHONY: all clean install man
all: tags $(BACKEND) $(DISCOVER) test test-decode
tags: $(SRC) airscan.h test.c test-decode.c
-ctags -R .
$(BACKEND): $(OBJDIR)airscan.o $(LIBAIRSCAN) airscan.sym
$(CC) -o $(BACKEND) -shared $(OBJDIR)/airscan.o $(LIBAIRSCAN) $(airscan_LDFLAGS)
$(DISCOVER): $(OBJDIR)discover.o $(LIBAIRSCAN)
$(CC) -o $(DISCOVER) discover.c $(CPPFLAGS) $(airscan_CFLAGS) $(LIBAIRSCAN) $(airscan_LIBS) -fPIE
$(LIBAIRSCAN): $(OBJ) Makefile
ar cru $(LIBAIRSCAN) $(OBJ)
install: all
mkdir -p $(DESTDIR)$(PREFIX)$(BINDIR)
mkdir -p $(DESTDIR)$(PREFIX)$(CONFDIR)
mkdir -p $(DESTDIR)$(PREFIX)$(CONFDIR)/dll.d
install -s -D -t $(DESTDIR)$(PREFIX)$(BINDIR) $(DISCOVER)
cp -n airscan.conf $(DESTDIR)$(PREFIX)$(CONFDIR)
cp -n dll.conf $(DESTDIR)$(PREFIX)$(CONFDIR)/dll.d/airscan
install -s -D -t $(DESTDIR)$(PREFIX)$(LIBDIR)/sane $(BACKEND)
mkdir -p $(DESTDIR)$(PREFIX)/$(MANDIR)/man5
install -m 644 -D -t $(DESTDIR)$(PREFIX)$(MANDIR)/man1 $(MAN_DISCOVER)
install -m 644 -D -t $(DESTDIR)$(PREFIX)$(MANDIR)/man5 $(MAN_BACKEND)
[ "$(COMPRESS)" = "" ] || $(COMPRESS) -f $(DESTDIR)$(PREFIX)$(MANDIR)/man1/$(MAN_DISCOVER)
[ "$(COMPRESS)" = "" ] || $(COMPRESS) -f $(DESTDIR)$(PREFIX)$(MANDIR)/man5/$(MAN_BACKEND)
clean:
rm -f test $(BACKEND) tags
rm -rf $(OBJDIR)
man: $(MAN_DISCOVER) $(MAN_BACKEND)
$(MAN_DISCOVER): $(MAN_DISCOVER).md
ronn --roff --manual=$(MAN_DISCOVER_TITLE) $(MAN_DISCOVER).md
$(MAN_BACKEND): $(MAN_BACKEND).md
ronn --roff --manual=$(MAN_BACKEND_TITLE) $(MAN_BACKEND).md
test: $(BACKEND) test.c
$(CC) -o test test.c $(BACKEND) -Wl,-rpath . ${airscan_CFLAGS}
test-decode: test-decode.c $(LIBAIRSCAN)
$(CC) -o test-decode test-decode.c $(CPPFLAGS) $(airscan_CFLAGS) $(LIBAIRSCAN) $(airscan_LIBS)
I tried generating recipe using devtool but not success with it. Can anybody help me write a recipe for this one. Thanks in advance
I'm the sane-airscan author :-), but I don't know anything about yocto. So, what is your problem?
I'm trying to compile the bpf samples, outside the tree.
Here's my folder:
.
├── bpf_load.c
├── bpf_load.h
├── bpf_load.o
├── libbpf.h
├── Makefile
├── xdp1
├── xdp1_kern.c
├── xdp1_kern.o
├── xdp1_user.c
├── xdp2_kern.c
└── xdp2_user.c
And this is the Makefile:
#
# Makefile for out-of-tree building eBPF programs
# similar to kernel/samples/bpf/
#
# Still depend on a kernel source tree.
#
TARGETS = xdp1
TOOLS_PATH = /usr/src/kernels/$(shell uname -r)/tools
TARGETS_ALL = $(TARGETS)
# Generate file name-scheme based on TARGETS
KERN_SOURCES = ${TARGETS_ALL:=_kern.c}
USER_SOURCES = ${TARGETS_ALL:=_user.c}
KERN_OBJECTS = ${KERN_SOURCES:.c=.o}
USER_OBJECTS = ${USER_SOURCES:.c=.o}
# Notice: the kbuilddir can be redefined on make cmdline
kbuilddir ?= /lib/modules/`uname -r`/build/
KERNEL=$(kbuilddir)
CFLAGS := -g -O2 -Wall
# Local copy of include/linux/bpf.h kept under ./kernel-usr-include
#
CFLAGS += /usr/include/linux/bpf.h
#
# Interacting with libbpf
CFLAGS += -I$(TOOLS_PATH)/lib
CFLAGS += -I$(TOOLS_PATH)/testing/selftests/bpf
LDFLAGS= -lelf
# Objects that xxx_user program is linked with:
OBJECT_LOADBPF = bpf_load.o
OBJECTS = $(OBJECT_LOADBPF)
#
# The static libbpf library
LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a
# Allows pointing LLC/CLANG to another LLVM backend, redefine on cmdline:
# make LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
LLC ?= llc
CLANG ?= clang
CC = gcc
NOSTDINC_FLAGS := -nostdinc -isystem $(shell $(CC) -print-file-name=include)
# TODO: can we remove(?) copy of uapi/linux/bpf.h stored here: ./tools/include/
# LINUXINCLUDE := -I./tools/include/
#
# bpf_helper.h need newer version of uapi/linux/bpf.h
# (as this git-repo use new devel kernel features)
KERNEL_PATH = /usr/src/kernels/$(shell uname -r)
LINUXINCLUDE := -I$(KERNEL_PATH)/include
#
LINUXINCLUDE += -I$(KERNEL_PATH)/arch/x86/include
LINUXINCLUDE += -I$(KERNEL_PATH)/arch/x86/include/generated/uapi
LINUXINCLUDE += -I$(KERNEL_PATH)/arch/x86/include/generated
LINUXINCLUDE += -I$(KERNEL_PATH)/include
LINUXINCLUDE += -I$(KERNEL_PATH)/arch/x86/include/uapi
LINUXINCLUDE += -I$(KERNEL_PATH)/include/uapi
LINUXINCLUDE += -I$(KERNEL_PATH)/include/generated/uapi
LINUXINCLUDE += -include $(KERNEL_PATH)/include/linux/kconfig.h
#LINUXINCLUDE += -I$(KERNEL)/tools/lib
EXTRA_CFLAGS=-Werror
all: dependencies $(TARGETS_ALL) $(KERN_OBJECTS)
.PHONY: dependencies clean verify_cmds verify_llvm_target_bpf $(CLANG) $(LLC)
# Most xxx_user program still depend on old bpf_load.c
$(OBJECT_LOADBPF): bpf_load.c bpf_load.h
$(CC) $(CFLAGS) -o $# -c $<
LIBBPF_SOURCES = $(TOOLS_PATH)/lib/bpf/*.c
# New ELF-loaded avail in libbpf (in bpf/libbpf.c)
$(LIBBPF): $(LIBBPF_SOURCES) $(TOOLS_PATH)/lib/bpf/Makefile
make -C $(TOOLS_PATH)/lib/bpf/ all
# Compiling of eBPF restricted-C code with LLVM
# clang option -S generated output file with suffix .ll
# which is the non-binary LLVM assembly language format
# (normally LLVM bitcode format .bc is generated)
#
# Use -Wno-address-of-packed-member as eBPF verifier enforces
# unaligned access checks where necessary
#
$(KERN_OBJECTS): %.o: %.c Makefile
$(CLANG) -S $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \
-D__KERNEL__ -D__ASM_SYSREG_H \
-D__BPF_TRACING__ \
-Wall \
-Wno-unused-value -Wno-pointer-sign \
-D__TARGET_ARCH_$(ARCH) \
-Wno-compare-distinct-pointer-types \
-Wno-gnu-variable-sized-type-not-at-end \
-Wno-tautological-compare \
-Wno-unknown-warning-option \
-Wno-address-of-packed-member \
-O2 -emit-llvm -c $< -o ${#:.o=.ll}
$(LLC) -march=bpf -filetype=obj -o $# ${#:.o=.ll}
$(TARGETS): %: xdp1_user.c $(OBJECTS) $(LIBBPF) Makefile
$(CC) $(CFLAGS) $(OBJECTS) $(LDFLAGS) -o $# $< $(LIBBPF)
I pretty much just copied the makfile I found here:
https://github.com/netoptimizer/prototype-kernel/blob/master/kernel/samples/bpf/Makefile
and deleted a bunch of stuff that I didn't need, and also changed it to be more dynamic and calculate the different paths using 'uname -r'.
The problem is that the original Makefile assumed that bfp_helpers.h is in the same directory as the files. But my xdp1_kern.c uses it and I can't have it in the same directory. I add -I(path to bpf_helpers.h) but it still throws error when I run it.
make LLC=<path to llc> CLANG=<path to clang>
gcc -g -O2 -Wall /usr/include/linux/bpf.h -I/usr/src/kernels/4.18.0-mlnx/tools/lib -I/usr/src/kernels/4.18.0-mlnx/tools/testing/selftests/bpf bpf_load.o -lelf -o xdp1 xdp1_user.c /usr/src/kernels/4.18.0-mlnx/tools/lib/bpf/libbpf.a
/.autodirect/net_linux_verification/tools/clang+llvm-3.8.0-linux-x86_64-centos6/bin/clang -S -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/7/include -I/usr/src/kernels/4.18.0-mlnx/include -I/usr/src/kernels/4.18.0-mlnx/arch/x86/include -I/usr/src/kernels/4.18.0-mlnx/arch/x86/include/generated/uapi -I/usr/src/kernels/4.18.0-mlnx/arch/x86/include/generated -I/usr/src/kernels/4.18.0-mlnx/include -I/usr/src/kernels/4.18.0-mlnx/arch/x86/include/uapi -I/usr/src/kernels/4.18.0-mlnx/include/uapi -I/usr/src/kernels/4.18.0-mlnx/include/generated/uapi -include /usr/src/kernels/4.18.0-mlnx/include/linux/kconfig.h -Werror \
-D__KERNEL__ -D__ASM_SYSREG_H \
-D__BPF_TRACING__ \
-Wall \
-Wno-unused-value -Wno-pointer-sign \
-D__TARGET_ARCH_ \
-Wno-compare-distinct-pointer-types \
-Wno-gnu-variable-sized-type-not-at-end \
-Wno-tautological-compare \
-Wno-unknown-warning-option \
-Wno-address-of-packed-member \
-O2 -emit-llvm -c xdp1_kern.c -o xdp1_kern.ll
xdp1_kern.c:15:10: fatal error: 'bpf_helpers.h' file not found
#include "bpf_helpers.h"
^
1 error generated.
make: *** [Makefile:93: xdp1_kern.o] Error 1
I'm was sure that adding -I/usr/src/kernels/4.18.0-mlnx/tools/testing/selftests/bpf will solve it as this is where bpf_helpers.h are on my machine. But it didn't, it only solved the include for bpf_utils.h.
You do not use the CFLAGS you modified when trying to compile your BPF program.
You do use the CFLAGS when compiling the user space programs:
# Most xxx_user program still depend on old bpf_load.c
$(OBJECT_LOADBPF): bpf_load.c bpf_load.h
$(CC) $(CFLAGS) -o $# -c $<
And
$(TARGETS): %: xdp1_user.c $(OBJECTS) $(LIBBPF) Makefile
$(CC) $(CFLAGS) $(OBJECTS) $(LDFLAGS) -o $# $< $(LIBBPF)
The latter gives you your first two lines of output, where your directory to search does appear:
make LLC=<path to llc> CLANG=<path to clang>
gcc -g -O2 -Wall [...] -I/usr/src/kernels/4.18.0-mlnx/tools/testing/selftests/bpf [...]
However, starting from the next line, this is a different command, calling clang to compile your BPF program. It comes from that Makefile code:
$(KERN_OBJECTS): %.o: %.c Makefile
$(CLANG) -S $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \
[...]
... Which does not use the $(CFLAGS). Just add it to the clang command in the Makefile, this should solve your problem.
I have the following makefile. It works well for .f and .c files but when I have .f90 file and want to compile it with ifort does not work?
Could you please advise me where I should change and how?
Thanks you
FCOMPFLAGS = -O -ffixed-line-length-132
CCOMPFLAGS = -O
FFLAGS = $(FCOMPFLAGS) -fsecond-underscore
CFLAGS = $(CCOMPFLAGS)
LDFLAGS = $(FCOMPFLAGS)
LD = gfortran
FC = gfortran
MAKEFILE = Makefile
PROGRAM1 = f1
OBJS = f1.o \
f2.o \
f3.o
all: $(PROGRAM1)
$(PROGRAM1): $(OBJS) $(MAKEFILE)
$(LD) $(LDFLAGS) $(OBJS) -o $(PROGRAM1)
clean: #rm -f $(OBJS) core
when I execute "make" I get the following error,
make: *** No rule to make target `f1.o', needed by `f90_simple'. Stop.
It seems that My makefile does not recognize *.f90 files, and my other question is do we have flag for ifrot compiler to be used in makefile
Thanks
You need to add the implicit rule:
%.o : %.f90
<tab>$(FC) $(FCOMPLAGS) -c $<
i have this makefile:
SHELL=/bin/bash
COMPILER_VERSION = "Intel 64 Compiler 16.0.0.109 Build 20150815"
SOURCES = \
ron1.f \
ron2.f \
ron3.f \
ron4.f
OBJECTS = $(SOURCES:.f=.o)
TARGET = mylib.a
FC = gfortran
FFLAGS = -O3
linux: $(TARGET)
#echo
#echo " " \
ar r $(TARGET) $(OBJECTS)
#echo
#echo " " \
ranlib $(TARGET)
#echo
$(TARGET): $(OBJECTS)
$(OBJECTS):$(SOURCES)
cleanall:
#echo
rm -f $(OBJECTS) $(TARGET)
#echo
clean:
#echo
rm -f $(OBJECTS)
#echo
.f.o:
#echo " " \
$(FC) -c $(FFLAGS) $*.f
It results the below output:
prompt> make cleanall
rm -f ron1.o ron2.o ron3.o ron4.o mylib.a
prompt> make
gfortran -c -O3 ron1.f
gfortran -c -O3 ron2.f
gfortran -c -O3 ron3.f
gfortran -c -O3 ron4.f
ar r mylib.a ron1.o ron2.o ron3.o ron4.o
ranlib mylib.a
prompt>
what i am looking to do is create a space between "prompt> make" and the first happening of gfortran.
and ideally i would like the output on the screen to first print out the contents of my COMPILER_VERSION variable before the first gfortran happens, such that the output would look like
prompt> make
makefile written for: Intel 64 Compiler 16.0.0.109 Build 20150815
gfortran -c -O3 ron1.f
gfortran -c -O3 ron2.f
gfortran -c -O3 ron3.f
and so on...
any help much appreciated.
You should add to the 'linux' target some prerequisite like 'ECHO' here:
linux: ECHO $(TARGET)
ar r $(TARGET) $(OBJECTS)
#echo
#echo " " \
ranlib $(TARGET)
#echo
ECHO:
#echo "\n\n\n\n Makefile written for the compiler version ${COMPILER_VERSION}"
thanks a bunch, that worked.
your
linux: ECHO $(TARGET)
worked great, only thing i did different than what you typed was this syntax for ECHO: which i placed at the bottom of the makefile. It allowed me to space out the screen output exactly how i wanted it.
ECHO:
#echo
#echo "Makefile written for compiler version ${COMPILER_VERSION}"
#echo
You can use echo with flag -e
#echo -e "\n"
I am getting an error when running the following makefile with make -f makefile2 install (apart install the rest is working):
all:myapp
#which compiler
CC = gcc
#Where to install
INSTDIR = /usr/local/bin
#where are include files kept
INCLUDE = .
#Options for development
CFLAGS = -g -Wall -ansi
#Options for release
# CFLAGS = -O -Wall -ansi
myapp: main.o 2.o 3.o
$(CC) -o myapp main.o 2.o 3.o
main.o: main.c a.h
$(CC) -I$(INCLUDE) $(CFLAGS) -c main.c
2.o: 2.c a.h b.h
$(CC) -I$(INCLUDE) $(CFLAGS) -c 2.c
3.o: 3.c b.h c.h
$(CC) -I$(INCLUDE) $(CFLAGS) -c 3.c
clean:
-rm main.o 2.o 3.o
install: myapp
#if [ -d $(INSTDIR) ]; \
then \
cp myapp $(INSTDIR);\
chmod a+x $(INSTDIR)/myapp;\
chmod og-w $(INSTDIR)/myapp;\
echo "Installed in $(INSTDIR)";\
else
echo "Sorry, $(INSTDIR) does not exist";\
fi
I'm getting the following error:
error /bin/sh: 7: Syntax error: end of file unexpected
make: *** [install] Error 2
From what I understand it is a white space/tabulation/non unix character problem in the last lines of the makefile (after install:). But even trying to delete all spaces and replacing with tabulation I didn't manage to run the makefile properly. The code comes directly from a programming book I'm reading and is an example. Any help appreciated!
You're missing a trailing slash on your else under the install rule. It should be:
install: myapp
#if [ -d $(INSTDIR) ]; \
then \
cp myapp $(INSTDIR);\
chmod a+x $(INSTDIR)/myapp;\
chmod og-w $(INSTDIR)/myapp;\
echo "Installed in $(INSTDIR)";\
else\
echo "Sorry, $(INSTDIR) does not exist";\
fi