build: remove pkgconfig-related code (#22422)

Cmake should already be able to find everything on its own.

7 files changed, 15 insertions, 122 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ce29a65dde..7944dec396 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,23 +38,9 @@ endif()
 
 # Prefer our bundled versions of dependencies.
 if(DEFINED ENV{DEPS_BUILD_DIR})
-  if(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
-    # pkg-config 29.2 has a bug on OpenBSD which causes it to drop any paths that
-    # *contain* system include paths. To avoid this, we prefix what would be
-    # "/usr/include" as "/_usr/include".
-    # This check is also performed in the cmake.deps/CMakeLists.txt and in the
-    # else clause following here.
-    # https://github.com/neovim/neovim/pull/14745#issuecomment-860201794
-    set(DEPS_PREFIX "$ENV{DEPS_BUILD_DIR}/_usr" CACHE PATH "Path prefix for finding dependencies")
-  else()
-    set(DEPS_PREFIX "$ENV{DEPS_BUILD_DIR}/usr" CACHE PATH "Path prefix for finding dependencies")
-  endif()
+  set(DEPS_PREFIX "$ENV{DEPS_BUILD_DIR}/usr" CACHE PATH "Path prefix for finding dependencies")
 else()
-  if(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
-    set(DEPS_PREFIX "${CMAKE_CURRENT_SOURCE_DIR}/.deps/_usr" CACHE PATH "Path prefix for finding dependencies")
-  else()
-    set(DEPS_PREFIX "${CMAKE_CURRENT_SOURCE_DIR}/.deps/usr" CACHE PATH "Path prefix for finding dependencies")
-  endif()
+  set(DEPS_PREFIX "${CMAKE_CURRENT_SOURCE_DIR}/.deps/usr" CACHE PATH "Path prefix for finding dependencies")
   # When running from within CLion or Visual Studio,
   # build bundled dependencies automatically.
   if(NOT EXISTS ${DEPS_PREFIX}
@@ -84,7 +70,6 @@ else()
 endif()
 
 list(INSERT CMAKE_PREFIX_PATH 0 ${DEPS_PREFIX})
-set(ENV{PKG_CONFIG_PATH} "$ENV{PKG_CONFIG_PATH}:${DEPS_PREFIX}/lib/pkgconfig")
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
   # If the macOS deployment target is not set manually (via $MACOSX_DEPLOYMENT_TARGET),
diff --git a/cmake.deps/CMakeLists.txt b/cmake.deps/CMakeLists.txt
index 836d9e62c6..6c71173766 100644
--- a/cmake.deps/CMakeLists.txt
+++ b/cmake.deps/CMakeLists.txt
@@ -34,24 +34,14 @@ if(HAS_OG_FLAG)
   set(DEFAULT_MAKE_CFLAGS CFLAGS+=-Og ${DEFAULT_MAKE_CFLAGS})
 endif()
 
-if(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
-  # pkg-config 29.2 has a bug on OpenBSD which causes it to drop any paths that
-  # *contain* system include paths. To avoid this, we prefix what would be
-  # "/usr/include" as "/_usr/include".
-  # This check is also performed in the root CMakeLists.txt
-  # https://github.com/neovim/neovim/pull/14745#issuecomment-860201794
-  set(DEPS_INSTALL_DIR "${CMAKE_BINARY_DIR}/_usr" CACHE PATH "Dependencies install directory.")
-else()
-  set(DEPS_INSTALL_DIR "${CMAKE_BINARY_DIR}/usr" CACHE PATH "Dependencies install directory.")
-endif()
-
-list(APPEND DEPS_CMAKE_ARGS -D CMAKE_INSTALL_PREFIX=${DEPS_INSTALL_DIR})
-
+set(DEPS_INSTALL_DIR "${CMAKE_BINARY_DIR}/usr" CACHE PATH "Dependencies install directory.")
 set(DEPS_BIN_DIR "${DEPS_INSTALL_DIR}/bin" CACHE PATH "Dependencies binary install directory.")
 set(DEPS_LIB_DIR "${DEPS_INSTALL_DIR}/lib" CACHE PATH "Dependencies library install directory.")
 set(DEPS_BUILD_DIR "${CMAKE_BINARY_DIR}/build" CACHE PATH "Dependencies build directory.")
 set(DEPS_DOWNLOAD_DIR "${DEPS_BUILD_DIR}/downloads" CACHE PATH "Dependencies download directory.")
 
+list(APPEND DEPS_CMAKE_ARGS -D CMAKE_INSTALL_PREFIX=${DEPS_INSTALL_DIR})
+
 option(USE_BUNDLED "Use bundled dependencies." ON)
 
 option(USE_BUNDLED_UNIBILIUM "Use the bundled unibilium." ${USE_BUNDLED})
diff --git a/cmake/FindLibLUV.cmake b/cmake/FindLibLUV.cmake
index 23b62b66d3..8fc2c8509b 100644
--- a/cmake/FindLibLUV.cmake
+++ b/cmake/FindLibLUV.cmake
@@ -1,24 +1,9 @@
-# - Try to find luv
-# Once done this will define
-#  LIBLUV_FOUND - System has libluv
-#  LIBLUV_INCLUDE_DIRS - The libluv include directories
-#  LIBLUV_LIBRARIES - The libraries needed to use libluv
-
-find_package(PkgConfig)
-if (PKG_CONFIG_FOUND)
-  pkg_check_modules(PC_LIBLUV QUIET luv)
-endif()
-
-set(LIBLUV_DEFINITIONS ${PC_LIBLUV_CFLAGS_OTHER})
-
-find_path(LIBLUV_INCLUDE_DIR luv/luv.h
-          PATHS ${PC_LIBLUV_INCLUDEDIR} ${PC_LIBLUV_INCLUDE_DIRS})
+find_path(LIBLUV_INCLUDE_DIR luv/luv.h)
 
 # Explicitly look for luv.so. #10407
 list(APPEND LIBLUV_NAMES luv_a luv libluv_a luv${CMAKE_SHARED_LIBRARY_SUFFIX})
 
-find_library(LIBLUV_LIBRARY NAMES ${LIBLUV_NAMES}
-  HINTS ${PC_LIBLUV_LIBDIR} ${PC_LIBLUV_LIBRARY_DIRS})
+find_library(LIBLUV_LIBRARY NAMES ${LIBLUV_NAMES})
 
 set(LIBLUV_LIBRARIES ${LIBLUV_LIBRARY})
 set(LIBLUV_INCLUDE_DIRS ${LIBLUV_INCLUDE_DIR})
diff --git a/cmake/FindLibTermkey.cmake b/cmake/FindLibTermkey.cmake
index 3e0c7f1bfd..f1f644dbd0 100644
--- a/cmake/FindLibTermkey.cmake
+++ b/cmake/FindLibTermkey.cmake
@@ -1,23 +1,8 @@
-# - Try to find libtermkey
-# Once done this will define
-#  LIBTERMKEY_FOUND - System has libtermkey
-#  LIBTERMKEY_INCLUDE_DIRS - The libtermkey include directories
-#  LIBTERMKEY_LIBRARIES - The libraries needed to use libtermkey
-
-find_package(PkgConfig)
-if (PKG_CONFIG_FOUND)
-  pkg_check_modules(PC_LIBTERMKEY QUIET termkey)
-endif()
-
-set(LIBTERMKEY_DEFINITIONS ${PC_LIBTERMKEY_CFLAGS_OTHER})
-
-find_path(LIBTERMKEY_INCLUDE_DIR termkey.h
-          PATHS ${PC_LIBTERMKEY_INCLUDEDIR} ${PC_LIBTERMKEY_INCLUDE_DIRS})
+find_path(LIBTERMKEY_INCLUDE_DIR termkey.h)
 
 list(APPEND LIBTERMKEY_NAMES termkey)
 
-find_library(LIBTERMKEY_LIBRARY NAMES ${LIBTERMKEY_NAMES}
-  HINTS ${PC_LIBTERMKEY_LIBDIR} ${PC_LIBTERMKEY_LIBRARY_DIRS})
+find_library(LIBTERMKEY_LIBRARY NAMES ${LIBTERMKEY_NAMES})
 
 set(LIBTERMKEY_LIBRARIES ${LIBTERMKEY_LIBRARY})
 set(LIBTERMKEY_INCLUDE_DIRS ${LIBTERMKEY_INCLUDE_DIR})
diff --git a/cmake/FindLibUV.cmake b/cmake/FindLibUV.cmake
index d6c4e9cbef..ce8037b858 100644
--- a/cmake/FindLibUV.cmake
+++ b/cmake/FindLibUV.cmake
@@ -1,34 +1,14 @@
-# - Try to find libuv
-# Once done, this will define
-#
-#  LIBUV_FOUND - system has libuv
-#  LIBUV_INCLUDE_DIRS - the libuv include directories
-#  LIBUV_LIBRARIES - link these to use libuv
-
-find_package(PkgConfig)
-if (PKG_CONFIG_FOUND)
-  pkg_check_modules(PC_LIBUV QUIET libuv)
-endif()
-
-find_path(LIBUV_INCLUDE_DIR uv.h
-  HINTS ${PC_LIBUV_INCLUDEDIR} ${PC_LIBUV_INCLUDE_DIRS})
+find_path(LIBUV_INCLUDE_DIR uv.h)
 
 list(APPEND LIBUV_NAMES uv_a uv)
 
-find_library(LIBUV_LIBRARY NAMES ${LIBUV_NAMES}
-  HINTS ${PC_LIBUV_LIBDIR} ${PC_LIBUV_LIBRARY_DIRS})
+find_library(LIBUV_LIBRARY NAMES ${LIBUV_NAMES})
 
 mark_as_advanced(LIBUV_INCLUDE_DIR LIBUV_LIBRARY)
 
-if(PC_LIBUV_LIBRARIES)
-    list(REMOVE_ITEM PC_LIBUV_LIBRARIES uv)
-endif()
-
-set(LIBUV_LIBRARIES ${LIBUV_LIBRARY} ${PC_LIBUV_LIBRARIES})
+set(LIBUV_LIBRARIES ${LIBUV_LIBRARY})
 set(LIBUV_INCLUDE_DIRS ${LIBUV_INCLUDE_DIR})
 
-# Deal with the fact that libuv.pc is missing important dependency information.
-
 include(CheckLibraryExists)
 
 check_library_exists(dl dlopen "dlfcn.h" HAVE_LIBDL)
diff --git a/cmake/FindLuaJit.cmake b/cmake/FindLuaJit.cmake
index 72795afefd..d89e3d7dfa 100644
--- a/cmake/FindLuaJit.cmake
+++ b/cmake/FindLuaJit.cmake
@@ -1,18 +1,4 @@
-# - Try to find luajit
-# Once done this will define
-#  LUAJIT_FOUND - System has luajit
-#  LUAJIT_INCLUDE_DIRS - The luajit include directories
-#  LUAJIT_LIBRARIES - The libraries needed to use luajit
-
-find_package(PkgConfig)
-if (PKG_CONFIG_FOUND)
-  pkg_check_modules(PC_LUAJIT QUIET luajit)
-endif()
-
-set(LUAJIT_DEFINITIONS ${PC_LUAJIT_CFLAGS_OTHER})
-
 find_path(LUAJIT_INCLUDE_DIR luajit.h
-          PATHS ${PC_LUAJIT_INCLUDEDIR} ${PC_LUAJIT_INCLUDE_DIRS}
           PATH_SUFFIXES luajit-2.0 luajit-2.1)
 
 if(MSVC)
@@ -23,8 +9,7 @@ else()
   list(APPEND LUAJIT_NAMES luajit-5.1)
 endif()
 
-find_library(LUAJIT_LIBRARY NAMES ${LUAJIT_NAMES}
-             PATHS ${PC_LUAJIT_LIBDIR} ${PC_LUAJIT_LIBRARY_DIRS})
+find_library(LUAJIT_LIBRARY NAMES ${LUAJIT_NAMES})
 
 set(LUAJIT_LIBRARIES ${LUAJIT_LIBRARY})
 set(LUAJIT_INCLUDE_DIRS ${LUAJIT_INCLUDE_DIR})
diff --git a/cmake/FindMsgpack.cmake b/cmake/FindMsgpack.cmake
index 2429c49706..7ab8239f8d 100644
--- a/cmake/FindMsgpack.cmake
+++ b/cmake/FindMsgpack.cmake
@@ -1,20 +1,4 @@
-# - Try to find msgpack
-# Once done this will define
-#  MSGPACK_FOUND - System has msgpack
-#  MSGPACK_INCLUDE_DIRS - The msgpack include directories
-#  MSGPACK_LIBRARIES - The libraries needed to use msgpack
-
-find_package(PkgConfig)
-if (PKG_CONFIG_FOUND)
-  pkg_search_module(PC_MSGPACK QUIET
-    msgpackc>=${Msgpack_FIND_VERSION}
-    msgpack>=${Msgpack_FIND_VERSION})
-endif()
-
-set(MSGPACK_DEFINITIONS ${PC_MSGPACK_CFLAGS_OTHER})
-
-find_path(MSGPACK_INCLUDE_DIR msgpack/version_master.h
-  HINTS ${PC_MSGPACK_INCLUDEDIR} ${PC_MSGPACK_INCLUDE_DIRS})
+find_path(MSGPACK_INCLUDE_DIR msgpack/version_master.h)
 
 if(MSGPACK_INCLUDE_DIR)
   file(READ ${MSGPACK_INCLUDE_DIR}/msgpack/version_master.h msgpack_version_h)
@@ -36,8 +20,7 @@ endif()
 find_library(MSGPACK_LIBRARY NAMES ${MSGPACK_NAMES}
   # Check each directory for all names to avoid using headers/libraries from
   # different places.
-  NAMES_PER_DIR
-  HINTS ${PC_MSGPACK_LIBDIR} ${PC_MSGPACK_LIBRARY_DIRS})
+  NAMES_PER_DIR)
 
 mark_as_advanced(MSGPACK_INCLUDE_DIR MSGPACK_LIBRARY)