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be more explicit about building from a new directory

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svn: r14683
This commit is contained in:
Eli Barzilay 2009-05-01 22:54:54 +00:00
parent 24571c0093
commit 930eec2d02
1 changed files with 20 additions and 5 deletions
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src/README
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@ -80,8 +80,9 @@ the Unix instructions below, but note the following:
try using GNU `make'.
1. Run the script `configure' (which is in the same directory as this
README), usually with a --prefix=TARGETDIR command-line argument
and optionally with --enable-shared.
README), possibly with a --prefix=TARGETDIR command-line argument
and optionally with --enable-shared. It is better to run the
build in a different directory rather then use this directory.
For example, if you want to install into /usr/local/plt using
dynamic libraries, then run
@ -90,7 +91,21 @@ the Unix instructions below, but note the following:
where "[here]" is the directory path containing the `configure'
script (possibly unnecessary, or possibly just "./", depending on
your shell and PATH setting).
your shell and PATH setting). To use a different directory for
the build (which is recommended), for example a subdirectory named
"build":
cd [here]
mkdir build
cd build
../configure --prefix=/usr/local/plt --enable-shared
(This is especially more convenient if you plan to update your
source tree from the plt repository. Such updates might involve
changes in the structure, which will leave your source tree in an
inconsistent state (eg, old Makefiles referring to inexistent
files). In such cases it is convenient to just remove the "build"
directory and start a fresh build.)
If the --prefix flag is omitted, the binaries are built for an
in-place installation (i.e., the parent of the directory
@ -106,8 +121,8 @@ the Unix instructions below, but note the following:
executables (independent of --prefix). This build directory does
not have to be in the source tree, even for an "in-place"
build. It's ok to run `configure' from its own directory (as in
the example above), but it's often better to pick a separate build
directory that is otherwise empty.
the first example above), but it's better to pick a separate build
directory that is otherwise empty (as in the second example).
The `configure' script accepts many other flags that adjust the
build process. Run `configure --help' for more information. In