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Minor doc enhancements to INSTALL.md

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Describe current relationship between config and Configure.
Put the environment variable list in alphabetical order.
Add description of KERNEL_BITS.
Add new variable CONFIG_NOWAIT.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16325)
This commit is contained in:
Rich Salz 2021-08-16 16:25:03 -04:00
parent 023cb594d9
commit 92115096c3
1 changed files with 23 additions and 14 deletions
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37
INSTALL.md
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@ -1142,11 +1142,9 @@ Configure OpenSSL
### Automatic Configuration
On some platform a `config` script is available which attempts to guess
your operating system (and compiler, if necessary) and calls the `Configure`
Perl script with appropriate target based on its guess. Further options can
be supplied to the `config` script, which will be passed on to the `Configure`
script.
In previous version, the `config` script determined the platform type and
compiler and then called `Configure`. Starting with this release, they are
the same.
#### Unix / Linux / macOS
@ -1406,11 +1404,29 @@ over the build process. Typically these should be defined prior to running
using this variable. Set it to the compiler executable you wish
to use, e.g. gcc or clang.
CONFIG_NOWAIT
On platforms where the choice of 32-bit or 64-bit architecture
is not explicitly specified, `Configure` will print a warning
message and wait for a few seconds to let you interrupt the
configuration. Setting this variable will skip the wait.
CROSS_COMPILE
This environment variable has the same meaning as for the
"--cross-compile-prefix" Configure flag described above. If both
are set then the Configure flag takes precedence.
HASHBANGPERL
The command string for the Perl executable to insert in the
#! line of perl scripts that will be publicly installed.
Default: /usr/bin/env perl
Note: the value of this variable is added to the same scripts
on all platforms, but it's only relevant on Unix-like platforms.
KERNEL_BITS
This can be the value `32` or `64` to specify the architecture
when it is not "obvious" to the configuration. It should generally
not be necessary to specify this environment variable.
NM
The name of the nm executable to use.
@ -1435,12 +1451,8 @@ over the build process. Typically these should be defined prior to running
Only needed if builing should use a different Perl executable
than what is used to run the Configure script.
HASHBANGPERL
The command string for the Perl executable to insert in the
#! line of perl scripts that will be publicly installed.
Default: /usr/bin/env perl
Note: the value of this variable is added to the same scripts
on all platforms, but it's only relevant on Unix-like platforms.
RANLIB
The name of the ranlib executable to use.
RC
The name of the rc executable to use. The default will be as
@ -1449,9 +1461,6 @@ over the build process. Typically these should be defined prior to running
variable is synonymous to this. If both are defined then RC
takes precedence.
RANLIB
The name of the ranlib executable to use.
WINDRES
See RC.