Libarchive 3.4.1

[thirdparty/libarchive.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index bd609eb408ebaffe70ba7da0082ff6410ce70e7e..4fd93d048027c0242ea3d4927f87683bb405f3a6 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,8 @@
 #
 CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12 FATAL_ERROR)
+if(POLICY CMP0074)
+  cmake_policy(SET CMP0074 NEW) #3.12.0 `find_package()`` uses ``<PackageName>_ROOT`` variables.
+endif()
 #
 PROJECT(libarchive C)
 #
@@ -15,7 +18,7 @@ endif()
 #   RelWithDebInfo : Release build with Debug Info
 #   MinSizeRel     : Release Min Size build
 IF(NOT CMAKE_BUILD_TYPE)
-  SET(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Build Type" FORCE)
+  SET(CMAKE_BUILD_TYPE "Release" CACHE STRING "Build Type" FORCE)
 ENDIF(NOT CMAKE_BUILD_TYPE)
 # Set a value type to properly display CMAKE_BUILD_TYPE on GUI if the
 # value type is "UNINITIALIZED".
@@ -84,6 +87,11 @@ SET(CMAKE_REQUIRED_DEFINITIONS)
 SET(CMAKE_REQUIRED_INCLUDES)
 SET(CMAKE_REQUIRED_LIBRARIES)
 SET(CMAKE_REQUIRED_FLAGS)
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+  OPTION(ENABLE_WERROR "Treat warnings as errors - default is ON for Debug, OFF otherwise." ON)
+else ()
+  OPTION(ENABLE_WERROR "Treat warnings as errors - default is ON for Debug, OFF otherwise." OFF)
+endif ()
 
 # Especially for early development, we want to be a little
 # aggressive about diagnosing build problems; this can get
@@ -93,10 +101,12 @@ IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$")
   #################################################################
   # Set compile flags for all build types.
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wformat -Wformat-security")
+  if (ENABLE_WERROR)
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
+  endif ()
   #################################################################
   # Set compile flags for debug build.
   # This is added into CMAKE_C_FLAGS when CMAKE_BUILD_TYPE is "Debug"
-  SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Werror")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wextra")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wunused")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wshadow")
@@ -108,11 +118,13 @@ IF (CMAKE_C_COMPILER_ID MATCHES "^Clang$")
   #################################################################
   # Set compile flags for all build types.
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wformat -Wformat-security")
+  if (ENABLE_WERROR)
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
+  endif ()
   #################################################################
   # Set compile flags for debug build.
   # This is added into CMAKE_C_FLAGS when CMAKE_BUILD_TYPE is "Debug"
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g")
-  SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Werror")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wextra")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wunused")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wshadow")
@@ -125,15 +137,21 @@ IF (CMAKE_C_COMPILER_ID MATCHES "^XL$")
   #################################################################
   # Set compile flags for all build types.
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -qflag=e:e -qformat=sec")
+  if (ENABLE_WERROR)
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -qhalt=w")
+  endif ()
   #################################################################
   # Set compile flags for debug build.
   # This is added into CMAKE_C_FLAGS when CMAKE_BUILD_TYPE is "Debug"
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g")
-  SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -qhalt=w")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -qflag=w:w")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -qinfo=pro:use")
 ENDIF(CMAKE_C_COMPILER_ID MATCHES "^XL$")
 IF (MSVC)
+  if (ENABLE_WERROR)
+    # /WX option is the same as gcc's -Werror option.
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /WX")
+  endif ()
   #################################################################
   # Set compile flags for debug build.
   # This is added into CMAKE_C_FLAGS when CMAKE_BUILD_TYPE is "Debug"
@@ -165,8 +183,6 @@ IF (MSVC)
   # Enable level 4 C4706: The test value in a conditional expression was the
   #                       result of an assignment.
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /we4706")
-  # /WX option is the same as gcc's -Werror option.
-  SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /WX")
   # /Oi option enables built-in functions.
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /Oi")
   #################################################################
@@ -465,6 +481,7 @@ ENDIF()
 IF(LIBLZMA_FOUND)
   SET(HAVE_LIBLZMA 1)
   SET(HAVE_LZMA_H 1)
+  CMAKE_PUSH_CHECK_STATE()
   SET(CMAKE_REQUIRED_INCLUDES ${LIBLZMA_INCLUDE_DIR})
   SET(CMAKE_REQUIRED_LIBRARIES ${LIBLZMA_LIBRARIES})
   INCLUDE_DIRECTORIES(${LIBLZMA_INCLUDE_DIRS})
@@ -478,6 +495,7 @@ IF(LIBLZMA_FOUND)
   IF(NOT WITHOUT_LZMA_API_STATIC AND LZMA_API_STATIC)
     ADD_DEFINITIONS(-DLZMA_API_STATIC)
   ENDIF(NOT WITHOUT_LZMA_API_STATIC AND LZMA_API_STATIC)
+  CMAKE_POP_CHECK_STATE()
 ELSE(LIBLZMA_FOUND)
 # LZMA not found and will not be used.
 ENDIF(LIBLZMA_FOUND)
@@ -533,9 +551,11 @@ IF(LIBB2_FOUND)
   SET(HAVE_BLAKE2_H 1)
   SET(ARCHIVE_BLAKE2 FALSE)
   LIST(APPEND ADDITIONAL_LIBS ${LIBB2_LIBRARY})
+  CMAKE_PUSH_CHECK_STATE()
   SET(CMAKE_REQUIRED_LIBRARIES ${LIBB2_LIBRARY})
   SET(CMAKE_REQUIRED_INCLUDES ${LIBB2_INCLUDE_DIR})
   CHECK_FUNCTION_EXISTS(blake2sp_init HAVE_LIBB2)
+  CMAKE_POP_CHECK_STATE()
 ELSE(LIBB2_FOUND)
   SET(ARCHIVE_BLAKE2 TRUE)
 ENDIF(LIBB2_FOUND)
@@ -590,17 +610,18 @@ IF(ZSTD_FOUND)
   SET(HAVE_ZSTD_H 1)
   INCLUDE_DIRECTORIES(${ZSTD_INCLUDE_DIR})
   LIST(APPEND ADDITIONAL_LIBS ${ZSTD_LIBRARY})
+  CMAKE_PUSH_CHECK_STATE()
   SET(CMAKE_REQUIRED_LIBRARIES ${ZSTD_LIBRARY})
   SET(CMAKE_REQUIRED_INCLUDES ${ZSTD_INCLUDE_DIR})
   CHECK_FUNCTION_EXISTS(ZSTD_compressStream HAVE_LIBZSTD)
   #
   # TODO: test for static library.
   #
+  CMAKE_POP_CHECK_STATE()
 ENDIF(ZSTD_FOUND)
 MARK_AS_ADVANCED(CLEAR ZSTD_INCLUDE_DIR)
 MARK_AS_ADVANCED(CLEAR ZSTD_LIBRARY)
 
-set(CMAKE_REQUIRED_LIBRARIES)
 
 #
 # Check headers
@@ -1329,6 +1350,7 @@ CHECK_FUNCTION_EXISTS_GLIBC(strrchr HAVE_STRRCHR)
 CHECK_FUNCTION_EXISTS_GLIBC(symlink HAVE_SYMLINK)
 CHECK_FUNCTION_EXISTS_GLIBC(timegm HAVE_TIMEGM)
 CHECK_FUNCTION_EXISTS_GLIBC(tzset HAVE_TZSET)
+CHECK_FUNCTION_EXISTS_GLIBC(unlinkat HAVE_UNLINKAT)
 CHECK_FUNCTION_EXISTS_GLIBC(unsetenv HAVE_UNSETENV)
 CHECK_FUNCTION_EXISTS_GLIBC(utime HAVE_UTIME)
 CHECK_FUNCTION_EXISTS_GLIBC(utimes HAVE_UTIMES)