[CMake] Add RCC platform configuration checks

1 files changed, 65 insertions, 0 deletions

diff --git a/rcc/cmake/modules/FindLibEdit.cmake b/rcc/cmake/modules/FindLibEdit.cmake
new file mode 100644
index 0000000..b3f49e1
--- /dev/null
+++ b/rcc/cmake/modules/FindLibEdit.cmake
@@ -0,0 +1,65 @@
+#.rst:
+# FindLibEdit
+# -----------
+#
+# Find libedit library and headers
+#
+# The module defines the following variables:
+#
+# ::
+#
+#   LibEdit_FOUND          - true if libedit was found
+#   LibEdit_INCLUDE_DIRS   - include search path
+#   LibEdit_LIBRARIES      - libraries to link
+#   LibEdit_VERSION_STRING - version number
+
+find_package(PkgConfig QUIET)
+pkg_check_modules(PC_LIBEDIT QUIET libedit)
+
+find_path(LibEdit_INCLUDE_DIRS NAMES histedit.h HINTS ${PC_LIBEDIT_INCLUDE_DIRS})
+find_library(LibEdit_LIBRARIES NAMES edit HINTS ${PC_LIBEDIT_LIBRARY_DIRS})
+
+include(CheckIncludeFile)
+if(LibEdit_INCLUDE_DIRS AND EXISTS "${LibEdit_INCLUDE_DIRS}/histedit.h")
+  include(CMakePushCheckState)
+  cmake_push_check_state()
+  list(APPEND CMAKE_REQUIRED_INCLUDES ${LibEdit_INCLUDE_DIRS})
+  list(APPEND CMAKE_REQUIRED_LIBRARIES ${LibEdit_LIBRARIES})
+  check_include_file(histedit.h HAVE_HISTEDIT_H)
+  cmake_pop_check_state()
+  if (HAVE_HISTEDIT_H)
+    file(STRINGS "${LibEdit_INCLUDE_DIRS}/histedit.h"
+          libedit_major_version_str
+          REGEX "^#define[ \t]+LIBEDIT_MAJOR[ \t]+[0-9]+")
+    string(REGEX REPLACE "^#define[ \t]+LIBEDIT_MAJOR[ \t]+([0-9]+)" "\\1"
+            libedit_major_version "${libedit_major_version_str}")
+
+    file(STRINGS "${LibEdit_INCLUDE_DIRS}/histedit.h"
+          libedit_minor_version_str
+          REGEX "^#define[ \t]+LIBEDIT_MINOR[ \t]+[0-9]+")
+    string(REGEX REPLACE "^#define[ \t]+LIBEDIT_MINOR[ \t]+([0-9]+)" "\\1"
+            libedit_minor_version "${libedit_minor_version_str}")
+
+    set(LibEdit_VERSION_STRING "${libedit_major_version}.${libedit_minor_version}")
+  else()
+    set(LibEdit_INCLUDE_DIRS "")
+    set(LibEdit_LIBRARIES "")
+  endif()
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LibEdit
+                                  FOUND_VAR
+                                    LibEdit_FOUND
+                                  REQUIRED_VARS
+                                    LibEdit_INCLUDE_DIRS
+                                    LibEdit_LIBRARIES
+                                  VERSION_VAR
+                                    LibEdit_VERSION_STRING)
+mark_as_advanced(LibEdit_INCLUDE_DIRS LibEdit_LIBRARIES)
+
+if (LibEdit_FOUND AND NOT TARGET LibEdit::LibEdit)
+  add_library(LibEdit::LibEdit INTERFACE IMPORTED)
+  target_link_libraries(LibEdit::LibEdit INTERFACE ${LibEdit_LIBRARIES})
+  target_include_directories(LibEdit::LibEdit INTERFACE ${LibEdit_INCLUDE_DIRS})
+endif()