URL:
<https://savannah.gnu.org/bugs/?62496>
Summary: Fix "7.3 Conditionals that Test Flags" in the
manual,
Project: make
Submitted by: dgoncharov
Submitted on: Sat 21 May 2022 01:21:51 AM UTC
Severity: 3 - Normal
Item Group: Documentation
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Component Version: SCM
Operating System: None
Fixed Release: None
Triage Status: None
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Follow-up Comments:
-------------------------------------------------------
Date: Sat 21 May 2022 01:21:51 AM UTC By: Dmitry Goncharov <dgoncharov>
In paragraph "7.3 Conditionals that Test Flags" the manual contains the
following recommendation
++++
For example, here is how to arrange to use ‘ranlib -t’ to finish marking
an archive file up to date:
archive.a: …
ifneq (,$(findstring t,$(MAKEFLAGS)))
...
----
When the user specifies long or -I<path> options, this piece of code specified
above will find 't' when -t was not specified.
E.g.
$ make --no-print-directory -I/tmp
causes MAKEFLAGS to contain '--no-print-directory -I/tmp'.
We can filter out long and -I<path> options with 'filter-out -%'.
E.g.
++++
$(findstring t,$(filter-out -%,$(MAKEFLAGS)))
----
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