[openwrt/openwrt] ppp: install pkg-config file on InstallDev

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/eeb59f87a18843c541277a6236b4f2b6e41889e9

commit eeb59f87a18843c541277a6236b4f2b6e41889e9
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Tue Oct 22 16:10:05 2024 +0200

    ppp: install pkg-config file on InstallDev
    
    It seems some package (sstp-client) makes use of pppd.pc file to detect
    the ppp version as 2.5.0 changed some API.
    
    Also install the .pc file to permit the version detection of pppd.
    
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 package/network/services/ppp/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/package/network/services/ppp/Makefile b/package/network/services/ppp/Makefile
index 5f1ebd4e7d..760a31dc0d 100644
--- a/package/network/services/ppp/Makefile
+++ b/package/network/services/ppp/Makefile
@@ -192,6 +192,8 @@ endif
 define Build/InstallDev
 	$(INSTALL_DIR) $(1)/usr/include
 	$(CP) $(PKG_INSTALL_DIR)/usr/include/pppd $(1)/usr/include/
+	$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/*.pc $(1)/usr/lib/pkgconfig
 endef
 
 define Package/ppp/script_install