perl: install libperl.so using $(INSTALL_BIN) to enable stripping

Install libperl.so with executable permissions (0755) instead of copying
it as-is.

This allows the OpenWrt build system to recognize the library as a binary and
automatically run the "strip" utility on it. Stripping removes unnecessary
debugging metadata and helper symbols that are only needed for development but
not for running Perl on the router.

This change reduces the installed size of libperl.so on the device:
- Before (not stripped): 3.7 MB (3,929,652 bytes)

```
root@turris:~# file /usr/lib/perl5/5.40/CORE/libperl.so
/usr/lib/perl5/5.40/CORE/libperl.so: ELF 32-bit MSB shared object, PowerPC or cisco 4500, version 1 (SYSV), dynamically linked, with debug_info, not stripped
```

- After (stripped):     3.5 MB (3,674,081 bytes)

```
root@turris:~# file /usr/lib/perl5/5.40/CORE/libperl.so
/usr/lib/perl5/5.40/CORE/libperl.so: ELF 32-bit MSB shared object, PowerPC or cisco 4500, version 1 (SYSV), dynamically linked, no section header
```

Saving ~255 KB of flash storage space on target devices.

Signed-off-by: Josef Schlehofer <redacted>

diff --git a/lang/perl/Makefile b/lang/perl/Makefile
index 50e76cafe8174764f876bc842a9358f80a4f0f7a..b3eb5a03f36699ab78987e3919daec2e0796ed38 100644 (file)
--- a/lang/perl/Makefile
+++ b/lang/perl/Makefile
@@ -11,7 +11,7 @@ include perlver.mk
 
 PKG_NAME:=perl
 PKG_VERSION:=$(PERL_VERSION)
-PKG_RELEASE:=5
+PKG_RELEASE:=6
 
 PKG_SOURCE_URL:=https://www.cpan.org/src/5.0
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
@@ -152,7 +152,7 @@ define Package/perl/install
        ln -nsf perl$(PKG_VERSION) $(1)/usr/bin/perl
        
        $(INSTALL_DIR) $(1)/usr/lib/perl5/$(PERL_VERSION)/CORE
-       $(CP) $(PKG_INSTALL_DIR)/usr/lib/perl5/$(PERL_VERSION)/CORE/libperl.so $(1)/usr/lib/perl5/$(PERL_VERSION)/CORE/
+       $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/lib/perl5/$(PERL_VERSION)/CORE/libperl.so $(1)/usr/lib/perl5/$(PERL_VERSION)/CORE/
 endef