vcpkg/ports/libsystemd/pkgconfig.patch

diff --git a/meson.build b/meson.build
index 687450e..ee4460b 100644
--- a/meson.build
+++ b/meson.build
@@ -1011,6 +1011,9 @@ threads = dependency('threads')
 librt = cc.find_library('rt')
 libm = cc.find_library('m')
 libdl = cc.find_library('dl')
+conf.set_quoted('PC_RT', librt.found() ? '-lrt' : '')
+conf.set_quoted('PC_M',  libm.found()  ? '-lm'  : '')
+conf.set_quoted('PC_DL', libdl.found() ? '-ldl' : '')
 libcrypt = dependency('libcrypt', 'libxcrypt', required : false)
 if not libcrypt.found()
         # fallback to use find_library() if libcrypt is provided by glibc, e.g. for LibreELEC.
diff --git a/src/libsystemd/libsystemd.pc.in b/src/libsystemd/libsystemd.pc.in
index 3a43ef6..930f16a 100644
--- a/src/libsystemd/libsystemd.pc.in
+++ b/src/libsystemd/libsystemd.pc.in
@@ -17,4 +17,6 @@ Description: systemd Library
 URL: {{PROJECT_URL}}
 Version: {{PROJECT_VERSION}}
 Libs: -L${libdir} -lsystemd
+Libs.private: {{PC_DL}} {{PC_M}} {{PC_RT}}
+Requires.private: libcap libcrypt liblz4 liblzma libzstd mount
 Cflags: -I${includedir}