configure: use 'pkg-config --static --libs' on the Darwin platform

Author: stewid

configure

@@ -2111,8 +2111,15 @@ if test "x${INCLUDE_DIR}${LIB_DIR}" = x; then
         # Check if libgit2 is installed and have a version that is
         # compatible with git2r.
         if $PKG_CONFIG ${PKG_CONFIG_NAME} --atleast-version=${LIBGIT2_MIN_VERSION}; then
-            PKGCONFIG_CFLAGS=`"${PKG_CONFIG}" --cflags "${PKG_CONFIG_NAME}"`
-            PKGCONFIG_LIBS=`"${PKG_CONFIG}" --libs "${PKG_CONFIG_NAME}"`
+            PKGCONFIG_CFLAGS=`"${PKG_CONFIG}" --cflags --silence-errors "${PKG_CONFIG_NAME}"`
+            case "${host_os}" in
+                darwin*)
+                    PKGCONFIG_LIBS=`"${PKG_CONFIG}" --libs --static "${PKG_CONFIG_NAME}"`
+                ;;
+                *)
+                    PKGCONFIG_LIBS=`"${PKG_CONFIG}" --libs "${PKG_CONFIG_NAME}"`
+                ;;
+            esac
         fi
     fi
 

configure.ac

@@ -1,5 +1,5 @@
 # git2r, R bindings to the libgit2 library.
-# Copyright (C) 2013-2024 The git2r contributors
+# Copyright (C) 2013-2025 The git2r contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License, version 2,
@@ -52,8 +52,15 @@ if test "x${INCLUDE_DIR}${LIB_DIR}" = x; then
         # Check if libgit2 is installed and have a version that is
         # compatible with git2r.
         if $PKG_CONFIG ${PKG_CONFIG_NAME} --atleast-version=${LIBGIT2_MIN_VERSION}; then
-            PKGCONFIG_CFLAGS=`"${PKG_CONFIG}" --cflags "${PKG_CONFIG_NAME}"`
-            PKGCONFIG_LIBS=`"${PKG_CONFIG}" --libs "${PKG_CONFIG_NAME}"`
+            PKGCONFIG_CFLAGS=`"${PKG_CONFIG}" --cflags --silence-errors "${PKG_CONFIG_NAME}"`
+            case "${host_os}" in
+                darwin*)
+                    PKGCONFIG_LIBS=`"${PKG_CONFIG}" --libs --static "${PKG_CONFIG_NAME}"`
+                ;;
+                *)
+                    PKGCONFIG_LIBS=`"${PKG_CONFIG}" --libs "${PKG_CONFIG_NAME}"`
+                ;;
+            esac
         fi
     fi