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* configure.texi: Explain better about .gdbinit and about

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the environment that configure.in sections run in.
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John Gilmore 1992-02-19 23:42:09 +00:00
parent 90d85bc42b
commit 442b8598ad
1 changed files with 13 additions and 9 deletions
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22
configure.texi
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@ -145,11 +145,10 @@ output file. (See @ref{Makefiles, , , make, Makefiles}.)
@item Generate @file{.gdbinit}
If the source directory contains a @file{.gdbinit} file and the build
directory is not the same as the source directory, a @file{.gdbinit}
file is created in the build directory. (see @ref{Command Files, , ,
gdb, Command Files}.)
@c There doesn't seem to be anything else about this. Is the build-dir
@c .gdbinit identical with the source-dir one? If so should say "copy"
@c rather than "create" to make it clear.
file is created in the build directory. This @file{.gdbinit} file
contains just a @code{source} command, which will cause the @file{.gdbinit}
file from the source directory to be read by GDB. (see
@ref{Command Files, , , gdb, Command Files}.)
@item Make symbolic links
Most directories have some symbolic links with generic names built
@ -1006,10 +1005,15 @@ fragment.
A @file{configure.in} file for Cygnus configure consists of a
@dfn{per-invocation} section, followed by a @dfn{per-host} section,
followed by a @dfn{per-target} section, optionally followed by a
@dfn{post-target} section. Each section is a shell script fragment sourced by
configure at the appropriate time. The interface between configure and
the shell fragments is through a set of shell variables. All sections
are sourced in the build directory.
@dfn{post-target} section. Each section is a shell script fragment,
which is sourced by the configure shell script at an appropriate time.
Values are passed among configure and the shell fragments through a
set of shell variables. When each section is being interpreted
(sourced) by the shell, the shell's current directory is the build
directory, and any files created by the section (or referred to by the
section) will be relative to the build directory. To reference files
in other places (such as the source directory), prepend a shell
variable such as @code{srcdir} to the desired file name.
@cindex Per-invocation section
The beginning of the @file{configure.in} file begins the per-invocation