This reverts commit eb045a4d.

As it severly breaks using the make build system. See
https://dune-project.org/flyspray/index.php?do=details&task_id=1572

this makes new automake versions work like old automake versions. Some
of my projects used to compile objects in subdirs from parent directories.
New automake versions don't allow this. We don't want to atopt our
projects to changes in automake and make the transition to cmake... so
keep the old behaviour, by adding this option.

Previously this was only set if run_default_configure was executed
before. Ergo dunecontrol make did try to use cmake even if USE_CMAKE=no
was set. This fixes flyspray 1560.
https://dune-project.org/flyspray/index.php?do=details&task_id=1560

It sets LOCAL_USE_CMAKE for the current module depending on USE_CMAKE
and whether there actually is CMake support for this module.
This will make it more easy to use the same check in all run_*
directives.

Previously we did not catch patterns at the start of the line.
Seems like sed cannot handle [ ^] as the meaning of
^ is the not operator here and not the line beginning.

Unfortunately environment variables with these names are not honored by CMake's
FindMPI. Therefore this commit translates them to MPI_{C,CXX}_COMPILER and
adds them to CMAKE_FLAGS before calling cmake.

When deciding which variable to put before cmake as environment variables
our sed pattern did not check for the beginning of a word or line. Therefore
MPICC=bla would be converted to CC=bla.
With this commit we make sure that there is eihter a beginning of a line or
a whitespace before the variable.

This enables ninja-build and other build systems to be called
correctly.
Targets can be passed by adding "--target <targetname>

The warning was spilled out for every module for every command,
even for update.
The build directory is announced by CMake's configure anyway.
Now it is printed for make, too.

CMAKE can now be set in the shell or the opts file, if both are set
the shell has higher priority.
This feature was dropped in …aef001c21e3a9 to fix FS#1518.

The only case we do not want to use the build-dir is
when explicitly autotools are used.

CMAKE is nom handled similar to MAKE.
CMAKE is no longer evaluated in the opts file as this would overwrite
a CMAKE set by the dunecontrol call.
This fixes FS#1518.

Once CMake will be default, people can deactivate it.

dunecontrol is capable of doing out of source builds, that are
not nested within the source directory by giving an absolute path
to the --builddir option. Unfortuantely, this (nice) feature was
not documented.

sadly the touchpad added some arbitrary "pwd; ", which slipped my
test, as I don't use cmake. Thanks to Andi Buhr for pointing this out.

up to now you could specify a BUILDDIR variable, which implied that modules were built in
$srdir/$BUILDDIR.
Imagine you have your dune modules in $HOME/Src. When you set BUILDDIR=build.g++
your dune-common module is built in $HOME/Src/dune-common/build.g++
Now you change BUILDDIR to an absolute path, e.g. BUILDDIR=$HOME/Build.g++
With the latest change dunecontrol will now build dune-common in
$HOME/Build.g++/dune-common/

Thanks to Angar for bugging me :-)

Bård Skaflestad authored 11 years ago and Christoph Grüninger committed 11 years ago

This commit implements support for using nested build directories of
the form

    (o) build/sequential/debug/cmake/clang
    (o) build/parallel/release/autotools/gcc

in addition to the separate build directory feature that already
existed.  This enables confining multiple build configurations to a
single subdirectory of each module's directory to avoid otherwise
littering the module directory.

Note: Using "mkdir -p" presumes a SUS v3 mkdir(1) utility.

The dune symlink was deprecated since 2009.

This completes the last patch by using $m for the module name. Finally,
installed modules are found correctly.

The check was whether $module_inst is yes, but what we actually want to check
is $INT_$module. This patch fixes this and forces configure to use pkg-config
for the installed module again. Only this allows us to extract custom libdirs.

clang does not support -print-multiarch. Therefore we try to
extract the "Target:" line from clang -v.

This patch moves the "set +e" command to the correct location during
detection of the multiarch variable. That is is before any
$CXX --print-multiarch call. Now dunecontrol will not fail for compilers
not supporting it.

It is the default any way and people might want to change it via an opts-file.

This patch fixes two issues:
- Faulty an non-posix sed expression
- Precendence issue (multiarch was extracted before compiler was set.)

Somewhere along the many changes we stopped forcing usage of pkg-config when
testing for installed versions of modules during configure. Without using
pkg-config there is no way of detecting custom installation parts used by
the user. In my case, this broke finding modules installed via cmake from
modules that are to built with autotools.

This patch forces DUNE_CHECK_MODULE to use pkg-config to setup the paths for
installed modules by dunecontrol not provinding --with-module=<path> to configure
for installed modules.

Previously some of the pathes (e.g the multiarch ones) took precedence
over the others. But as with same some of the pkgconfig files are installed
below lib/<multiarch> and others (if there is not object library) are not.
With this patch all possible install locations of pkgconfig files are added
to the path if they exist.

The compiler might exit with nonzero exit code if given non-existent
options. Therefore we need to use set +e during this to make dunecontrol
to continue running even the options are not supported.

Some ^[$BLANK] or [^[$BLANK]^'], where $BLANK is space followed by tab
did not work as a capturing statement in some cases (e.g. opts files
with CONFIGURE_FLAGS="CXX='bla'"). After this patch we use [$NOBLANK]
with NOBLANK=^$space^$tab which works. In addition the other patches
form feature/posix-sed-dunecontrol have been backported to close flyspray
1401.

Unfortunately gcc-4.4 does not support --print-multiarch.
Therefore we fallback to cc -v and grep for the target in this case.