diff --git a/impl/Cargo.toml b/impl/Cargo.toml
index 58c947e6..a427c7ed 100644
--- a/impl/Cargo.toml
+++ b/impl/Cargo.toml
@@ -104,10 +104,15 @@ additional_deps = ["@cargo_raze__libgit2//:libgit2"]
 [package.metadata.raze.crates.libssh2-sys.'*']
 # build.rs file: https://github.com/alexcrichton/ssh2-rs/blob/master/libssh2-sys/build.rs
 build_data_dependencies = [
+    "@cargo_raze__libssh2//:libssh2_gen_dir",
+    "@cargo_raze__libssh2//:fix_pkgconfig",
     "@cargo_raze__libssh2//:libssh2",
     "@cargo_raze__openssl//:openssl",
 ]
 additional_deps = ["@cargo_raze__libssh2//:libssh2"]
+[package.metadata.raze.crates.libssh2-sys.'*'.buildrs_additional_environment_variables]
+    PKG_CONFIG_PATH = "$(execpath @cargo_raze__libssh2//:libssh2_gen_dir)/pkgconfig"
+    LIBSSH2_SYS_USE_PKG_CONFIG = "true"
 
 [package.metadata.raze.crates.libz-sys.'*']
 # build.rs file: https://github.com/rust-lang/libz-sys/blob/main/build.rs
@@ -125,7 +130,7 @@ build_data_dependencies = [
 ]
 data_attr = "[\"@cargo_raze__openssl//:openssl\"]"
 additional_deps = ["@cargo_raze__openssl//:openssl"]
-    [package.metadata.raze.crates.openssl-sys.'*'.buildrs_additional_environment_variables]
+[package.metadata.raze.crates.openssl-sys.'*'.buildrs_additional_environment_variables]
         OPENSSL_DIR="$(execpath @cargo_raze__openssl//:gen_dir)"
         OPENSSL_STATIC="1"
 
diff --git a/third_party/cargo/remote/BUILD.libssh2-sys-0.2.21.bazel b/third_party/cargo/remote/BUILD.libssh2-sys-0.2.21.bazel
index 7ddca981..f46e4580 100644
--- a/third_party/cargo/remote/BUILD.libssh2-sys-0.2.21.bazel
+++ b/third_party/cargo/remote/BUILD.libssh2-sys-0.2.21.bazel
@@ -41,12 +41,16 @@ cargo_build_script(
     name = "libssh2_sys_build_script",
     srcs = glob(["**/*.rs"]),
     build_script_env = {
+        "LIBSSH2_SYS_USE_PKG_CONFIG": "true",
+        "PKG_CONFIG_PATH": "$(execpath @cargo_raze__libssh2//:libssh2_gen_dir)/pkgconfig",
     },
     crate_features = [
     ],
     crate_root = "build.rs",
     data = glob(["**"]) + [
+        "@cargo_raze__libssh2//:fix_pkgconfig",
         "@cargo_raze__libssh2//:libssh2",
+        "@cargo_raze__libssh2//:libssh2_gen_dir",
         "@cargo_raze__openssl//:openssl",
     ],
     edition = "2015",
diff --git a/third_party/libgit2/BUILD.libgit2.bazel b/third_party/libgit2/BUILD.libgit2.bazel
index f13b36bf..1e4dc867 100644
--- a/third_party/libgit2/BUILD.libgit2.bazel
+++ b/third_party/libgit2/BUILD.libgit2.bazel
@@ -13,9 +13,14 @@ _CACHE_ENTRIES = {
     "BUILD_EXAMPLES": "off",
     "BUILD_FUZZERS": "off",
     "BUILD_SHARED_LIBS": "off",
-    "CMAKE_PREFIX_PATH": "$EXT_BUILD_DEPS/pcre;$EXT_BUILD_DEPS/openssl;$EXT_BUILD_DEPS/libssh2;$EXT_BUILD_DEPS/zlib",
+    "CMAKE_PREFIX_PATH": "$EXT_BUILD_DEPS/pcre;$EXT_BUILD_DEPS/openssl;$EXT_BUILD_DEPS/zlib",
     "EMBED_SSH_PATH": "$(execpath @cargo_raze__libssh2//:libssh2)",
     "USE_HTTPS": "on",
+    # Manually configure libssh2 as cmake gets confused about what pkgconfig reports.
+    "USE_SSH": "off",
+    "LIBSSH2_FOUND": "true",
+    "LIBSSH2_INCLUDE_DIRS": "$EXT_BUILD_DEPS/libssh2/include",
+    "LIBSSH2_LIBRARY_DIRS": "$EXT_BUILD_DEPS/libssh2/lib",
 }
 
 _LINUX_CACHE_ENTRIES = dict(_CACHE_ENTRIES.items() + {
diff --git a/third_party/libssh2/BUILD.libssh2.bazel b/third_party/libssh2/BUILD.libssh2.bazel
index 253ed432..3e26f838 100644
--- a/third_party/libssh2/BUILD.libssh2.bazel
+++ b/third_party/libssh2/BUILD.libssh2.bazel
@@ -32,3 +32,27 @@ cmake(
     visibility = ["//visibility:public"],
     deps = ["@cargo_raze__openssl//:openssl"],
 )
+
+filegroup(
+    name = "libssh2_gen_dir",
+    srcs = [":libssh2"],
+    output_group = "gen_dir",
+    visibility = ["//visibility:public"],
+)
+
+genrule(
+    name = "fix_pkgconfig",
+    srcs = [":libssh2"],
+    outs = ["pkgconfig/libssh2.pc"],
+    # Get rid of ${EXT_BUILD_ROOT}/ in the pkgconfig file so it references
+    # libssh2 resources from the root of the project rather than expanding
+    # EXT_BUILD_ROOT to "" and resulting in a pkgconfig that claims to start
+    # at the filesystem root (/).
+    cmd = """
+        mkdir -p $(@D)
+        DIRS=($(locations :libssh2))
+        SRC="$${DIRS[0]}/lib/pkgconfig/libssh2.pc"
+        sed -e "s|.{EXT_BUILD_ROOT}/||g" < $$SRC > $@
+    """,
+    visibility = ["//visibility:public"],
+)