MONGOCRYPT-330 reduce overlinking for pkg-config script (#191)

.evergreen/pkgconfig-tests.sh

@@ -68,16 +68,22 @@ export PKG_CONFIG_PATH="$(system_path $(/usr/bin/dirname $(/usr/bin/find $pkgcon
 cd $libmongocrypt_root
 gcc $(pkg-config --cflags libmongocrypt-static libbson-static-1.0) -o example-state-machine test/example-state-machine.c $(pkg-config --libs libmongocrypt-static)
 ./example-state-machine
+# Build example-no-bson, static linking against libmongocrypt
+gcc $(pkg-config --cflags libmongocrypt-static) -o example-no-bson test/example-no-bson.c $(pkg-config --libs libmongocrypt-static)
+./example-no-bson
 
-rm -f example-state-machine
+rm -f example-state-machine example-no-bson
 
 # Build example-state-machine, dynamic linking against libmongocrypt
 gcc $(pkg-config --cflags libmongocrypt libbson-static-1.0) -o example-state-machine test/example-state-machine.c $(pkg-config --libs libmongocrypt)
+# Build example-no-bson, dynamic linking against libmongocrypt
+gcc $(pkg-config --cflags libmongocrypt) -o example-no-bson test/example-no-bson.c $(pkg-config --libs libmongocrypt)
 export LD_LIBRARY_PATH="$(system_path $pkgconfig_tests_root/install/libmongocrypt/lib):$(system_path $pkgconfig_tests_root/install/libmongocrypt/lib64)"
 ./example-state-machine
+./example-no-bson
 unset LD_LIBRARY_PATH
 
-rm -f example-state-machine
+rm -f example-state-machine example-no-bson
 
 # Clean up prior to next execution
 cd $pkgconfig_tests_root
@@ -95,17 +101,23 @@ $CMAKE --build . --target install --config RelWithDebInfo
 # Build example-state-machine, static linking against libmongocrypt
 cd $libmongocrypt_root
 gcc $(pkg-config --cflags libmongocrypt-static libbson-static-1.0) -o example-state-machine test/example-state-machine.c $(pkg-config --libs libmongocrypt-static)
+# Build example-no-bson, static linking against libmongocrypt
+gcc $(pkg-config --cflags libmongocrypt-static) -o example-no-bson test/example-no-bson.c $(pkg-config --libs libmongocrypt-static)
 export LD_LIBRARY_PATH="$(system_path $pkgconfig_tests_root/install/lib):$(system_path $pkgconfig_tests_root/install/lib64)"
 ./example-state-machine
+./example-no-bson
 unset LD_LIBRARY_PATH
 
-rm -f example-state-machine
+rm -f example-state-machine example-no-bson
 
 # Build example-state-machine, dynamic linking against libmongocrypt
 gcc $(pkg-config --cflags libmongocrypt libbson-static-1.0) -o example-state-machine test/example-state-machine.c $(pkg-config --libs libmongocrypt)
+# Build example-no-bson, dynamic linking against libmongocrypt
+gcc $(pkg-config --cflags libmongocrypt) -o example-no-bson test/example-no-bson.c $(pkg-config --libs libmongocrypt)
 export LD_LIBRARY_PATH="$(system_path $pkgconfig_tests_root/install/lib):$(system_path $pkgconfig_tests_root/install/lib64):$(system_path $pkgconfig_tests_root/install/libmongocrypt/lib):$(system_path $pkgconfig_tests_root/install/libmongocrypt/lib64)"
 ./example-state-machine
+./example-no-bson
 unset LD_LIBRARY_PATH
 
-rm -f example-state-machine
+rm -f example-state-machine example-no-bson
 

CMakeLists.txt

@@ -360,7 +360,6 @@ configure_file (src/mongocrypt.h.in src/mongocrypt.h)
 set (PROJECT_VERSION "${BUILD_VERSION}")
 set (PROJECT_DESCRIPTION "The libmongocrypt client-side field level encryption library.")
 if (NOT ENABLE_BUILD_FOR_PPA)
-   set (PKG_CONFIG_REQUIRES "libbson-static-1.0")
    set (PKG_CONFIG_STATIC_REQUIRES "libbson-static-1.0")
 endif ()
 if (ENABLE_SHARED_BSON)

test/example-no-bson.c

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2021-present MongoDB, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <mongocrypt.h>
+
+int main () {
+   printf ("mongocrypt_version=%s\n", mongocrypt_version(0));
+   return 0;
+}