[PATCH] build: Use PKG_INSTALL_DIR

["Arsen Arsenović" <arsen@aarsen.me>]

* configure.ac: Call PKG_INSTALL_DIR to set pkgconfigdir.
* Makefile.am (pkgconfigdir): Remove.  Will be set via AC_SUBST.
---
Hi there,

This patch is in a similar vein to my earlier patch to Guile itself
posted at
https://lists.gnu.org/archive/html/guile-devel/2023-03/msg00040.html

These came up while I was working on packaging Guile in Gentoo.

My current plan with this is to install the guile-lib pkg-config file
alongside its matching Guile versions, in order to support parallel
installation, seeing as otherwise two guile-lib builds against two
Guile versions collide in the pkg-config file they install.

Also, on a similar note, guile-lib installs to /usr/share/guile/site/
rather than /usr/share/guile/site/$EV (i.e. %global-site-dir instead of
%site-dir) like other packages do.  Why is that the case?  In this
instance, it's probably okay as guile-lib installs identical Scheme code
for different Guile effective versions, but I'm not sure that can be
said about the general case.

Should guile-lib use %site-dir?

Thanks in advance, have a lovely day.

 Makefile.am  | 1 -
 configure.ac | 1 +
 2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 4f981d1..47805b3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -25,7 +25,6 @@
 ####
 
 
-pkgconfigdir=$(libdir)/pkgconfig
 pkgconfig_DATA=meta/guile-lib-1.0.pc
 
 SUBDIRS = 		\
diff --git a/configure.ac b/configure.ac
index 7171296..3070aa4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,6 +66,7 @@ GUILE_SITE_DIR
 GUILE_GLOBAL_SITE_DIR
 GUILE_SITE_CCACHE_DIR
 GUILE_FLAGS
+PKG_INSTALLDIR
 
 dnl This argument is passed to guild; it ensures cross-compiling uses
 dnl the right target.
-- 
2.40.0