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Older versions of gzip assume the GZIP environment variable contains
flags[1]. Building netsniff-ng on a system with such a version of gzip
will yield the following error:
INST netsniff-ng/netsniff-ng
gzip -9 -c netsniff-ng.8 > netsniff-ng/netsniff-ng.8.gz
gzip: gzip: No such file or directory
A practical alternative to redefining GZIP in the Makefile seems to be
to use the GZIP_ENV make variable[2] instead.
[1] The GZIP environment variable was deprecated in gzip version 1.7.
See https://www.gnu.org/software/gzip/manual/html_node/Environment.html
and https://git.savannah.gnu.org/cgit/gzip.git/tree/NEWS for more
information.
[2] https://www.gnu.org/software/automake/manual/automake.html#index-GZIP_005fENV
Signed-off-by: Daniel Roggow <daniel.roggow@rockwellcollins.com>
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The parser generator's name is yacc, not yaac.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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When installing to the default DESTDIR /usr/local with non existent
/usr/local/share/man/man8 (or any subpath of it), the installation
of manpages fails with e.g.
install: cannot create regular file `/usr/local/share/man/man8/netsniff-ng.8.gz': No such file or directory
make: *** [netsniff-ng_do_install] Error 1
Thus, create any leading, non-existent directories by using the INST
instead of the INSTX command which will call install -d on the path.
Reported-by: James Burnett <James.Burnett@geant.org>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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If only a header file is changed, the corresponding module is not
rebuilt. Thus, add a rule to make module build depend on the header file
as well (where applicable) to circumvent this effect.
Note: This will still not necessarily catch every dependency between
modules, source and header files.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Don't reset the variable CC in the Makefile, but set it to gcc by
default (can be overriden when e.g. compiling with `make CC=clang').
This way we can also have non-verbose compiles with compilers other than
gcc. Furthermore make sure that the CC variable is also respected for
LD.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Similar to the 'make C=1' for the Linux kernel, wire up the sparse
command for our build system in a similar fashion. Use 'make C=1 [tool]'
to check the source files using sparse. Of course, the sparse tool needs
to be installed and available in your $PATH for this to work.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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This change implements support for specifying an alternative
installation destination directory by setting DESTDIR when
calling 'make install'.
Example: make DESTDIR=/alternative-rootfs install
It is particularly useful when cross-compiling and installing
in a dedicated directory where for example the rootfs or a
build sandbox for the target architecture is mounted.
By using DESTDIR you can avoid to mess with PREFIX to include
the alternative installation directory!
Signed-off-by: Christian Wiese <chris@opensde.org>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Improve the build system, so that configuration files are installed
per tool basis. Also, introduce post_install targets, so that config
files can be altered in some way, e.g. done by trafgen. Moreover,
move custom targets from Extra to tool-specific Makefiles.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Split the build system into smaller manageable pieces, grouped by
context. In that sense, we can keep the most important information
within the Makefile itself, and group out misc bits and pieces that
we just include into it. E.g. 'Cmds' contains all defined commands
that we call from other locations, 'Template' contains the generic
build template for all tools, 'Extra' has pieces that need special
treatment for the tools to build and 'Misc' contains help and release
code. This makes it more manageable on the long run. While at it, I
also simplified some code and removed all Wflags expect "-Wall" as
we want to convert into "-Wall -Wextra -W" anyway.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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