externals: Fix case spelling of libzip.

CMake is case senstive, so Libzip vs LIBZIP was a bug.
Upstream calls themself libzip, so let's pick this naming.

externals/CMakeLists.txt

@@ -64,8 +64,8 @@ endif()
 add_subdirectory(sirit)
 
 # libzip
-find_package(Libzip 1.5)
-if (NOT LIBZIP_FOUND)
+find_package(libzip 1.5)
+if (NOT libzip_FOUND)
     message(STATUS "libzip 1.5 or newer not found, falling back to externals")
     add_subdirectory(libzip EXCLUDE_FROM_ALL)
 endif()

externals/find-modules/FindLibzip.cmake

@@ -1,72 +0,0 @@
-
-find_package(PkgConfig QUIET)
-pkg_check_modules(PC_LIBZIP QUIET libzip)
-
-find_path(LIBZIP_INCLUDE_DIR
-  NAMES zip.h
-  PATHS ${PC_LIBZIP_INCLUDE_DIRS}
-  "$ENV{LIB_DIR}/include"
-  "$ENV{INCLUDE}"
-  /usr/local/include
-  /usr/include
-)
-find_path(LIBZIP_INCLUDE_DIR_ZIPCONF
-  NAMES zipconf.h
-  HINTS ${PC_LIBZIP_INCLUDE_DIRS}
-  "$ENV{LIB_DIR}/include"
-  "$ENV{LIB_DIR}/lib/libzip/include"
-  "$ENV{LIB}/lib/libzip/include"
-  /usr/local/lib/libzip/include
-  /usr/lib/libzip/include
-  /usr/local/include
-  /usr/include
-  "$ENV{INCLUDE}"
-)
-find_library(LIBZIP_LIBRARY
-  NAMES zip
-  PATHS ${PC_LIBZIP_LIBRARY_DIRS}
-  "$ENV{LIB_DIR}/lib" "$ENV{LIB}" /usr/local/lib /usr/lib
-)
-
-if (LIBZIP_INCLUDE_DIR_ZIPCONF)
-  FILE(READ "${LIBZIP_INCLUDE_DIR_ZIPCONF}/zipconf.h" _LIBZIP_VERSION_CONTENTS)
-  if (_LIBZIP_VERSION_CONTENTS)
-    STRING(REGEX REPLACE ".*#define LIBZIP_VERSION \"([0-9.]+)\".*" "\\1" LIBZIP_VERSION "${_LIBZIP_VERSION_CONTENTS}")
-  endif()
-  unset(_LIBZIP_VERSION_CONTENTS)
-endif()
-
-set(LIBZIP_VERSION ${LIBZIP_VERSION} CACHE STRING "Version number of libzip")
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Libzip
-  FOUND_VAR LIBZIP_FOUND
-  REQUIRED_VARS
-    LIBZIP_LIBRARY
-    LIBZIP_INCLUDE_DIR
-    LIBZIP_INCLUDE_DIR_ZIPCONF
-    LIBZIP_VERSION
-  VERSION_VAR LIBZIP_VERSION
-)
-
-if(LIBZIP_FOUND)
-  set(LIBZIP_LIBRARIES ${LIBZIP_LIBRARY})
-  set(LIBZIP_INCLUDE_DIRS ${LIBZIP_INCLUDE_DIR})
-  set(LIBZIP_DEFINITIONS ${PC_LIBZIP_CFLAGS_OTHER})
-endif()
-
-if(LIBZIP_FOUND AND NOT TARGET libzip::libzip)
-  add_library(libzip::libzip UNKNOWN IMPORTED)
-  set_target_properties(libzip::libzip PROPERTIES
-    IMPORTED_LOCATION "${LIBZIP_LIBRARY}"
-    INTERFACE_COMPILE_OPTIONS "${PC_LIBZIP_CFLAGS_OTHER}"
-    INTERFACE_INCLUDE_DIRECTORIES "${LIBZIP_INCLUDE_DIR}"
-  )
-endif()
-
-mark_as_advanced(
-    LIBZIP_INCLUDE_DIR
-    LIBZIP_INCLUDE_DIR_ZIPCONF
-    LIBZIP_LIBRARY
-    LIBZIP_VERSION
-)

externals/find-modules/Findlibzip.cmake

@@ -0,0 +1,72 @@
+
+find_package(PkgConfig QUIET)
+pkg_check_modules(PC_libzip QUIET libzip)
+
+find_path(libzip_INCLUDE_DIR
+  NAMES zip.h
+  PATHS ${PC_libzip_INCLUDE_DIRS}
+  "$ENV{LIB_DIR}/include"
+  "$ENV{INCLUDE}"
+  /usr/local/include
+  /usr/include
+)
+find_path(libzip_INCLUDE_DIR_ZIPCONF
+  NAMES zipconf.h
+  HINTS ${PC_libzip_INCLUDE_DIRS}
+  "$ENV{LIB_DIR}/include"
+  "$ENV{LIB_DIR}/lib/libzip/include"
+  "$ENV{LIB}/lib/libzip/include"
+  /usr/local/lib/libzip/include
+  /usr/lib/libzip/include
+  /usr/local/include
+  /usr/include
+  "$ENV{INCLUDE}"
+)
+find_library(libzip_LIBRARY
+  NAMES zip
+  PATHS ${PC_libzip_LIBRARY_DIRS}
+  "$ENV{LIB_DIR}/lib" "$ENV{LIB}" /usr/local/lib /usr/lib
+)
+
+if (libzip_INCLUDE_DIR_ZIPCONF)
+  FILE(READ "${libzip_INCLUDE_DIR_ZIPCONF}/zipconf.h" _libzip_VERSION_CONTENTS)
+  if (_libzip_VERSION_CONTENTS)
+    STRING(REGEX REPLACE ".*#define LIBZIP_VERSION \"([0-9.]+)\".*" "\\1" libzip_VERSION "${_libzip_VERSION_CONTENTS}")
+  endif()
+  unset(_libzip_VERSION_CONTENTS)
+endif()
+
+set(libzip_VERSION ${libzip_VERSION} CACHE STRING "Version number of libzip")
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(libzip
+  FOUND_VAR libzip_FOUND
+  REQUIRED_VARS
+    libzip_LIBRARY
+    libzip_INCLUDE_DIR
+    libzip_INCLUDE_DIR_ZIPCONF
+    libzip_VERSION
+  VERSION_VAR libzip_VERSION
+)
+
+if(libzip_FOUND)
+  set(libzip_LIBRARIES ${libzip_LIBRARY})
+  set(libzip_INCLUDE_DIRS ${libzip_INCLUDE_DIR})
+  set(libzip_DEFINITIONS ${PC_libzip_CFLAGS_OTHER})
+endif()
+
+if(libzip_FOUND AND NOT TARGET libzip::libzip)
+  add_library(libzip::libzip UNKNOWN IMPORTED)
+  set_target_properties(libzip::libzip PROPERTIES
+    IMPORTED_LOCATION "${libzip_LIBRARY}"
+    INTERFACE_COMPILE_OPTIONS "${PC_libzip_CFLAGS_OTHER}"
+    INTERFACE_INCLUDE_DIRECTORIES "${libzip_INCLUDE_DIR}"
+  )
+endif()
+
+mark_as_advanced(
+    libzip_INCLUDE_DIR
+    libzip_INCLUDE_DIR_ZIPCONF
+    libzip_LIBRARY
+    libzip_VERSION
+)