diff options
| -rw-r--r-- | CMakeLists.txt | 10 | ||||
| -rw-r--r-- | cmake/CheckFileOffsetBits.c | 9 | ||||
| -rw-r--r-- | cmake/CheckFileOffsetBits.cmake | 39 |
3 files changed, 58 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index da3f160f..278c70c6 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -20,6 +20,7 @@ INCLUDE(CheckSymbolExists) INCLUDE(CheckCCompilerFlag) INCLUDE(CheckCSourceCompiles) INCLUDE(CheckTypeSize) +include(CheckFileOffsetBits) SET(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE) @@ -36,6 +37,15 @@ ELSE() SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_GNU_SOURCE=1 -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700") ENDIF() +# Set defines for large file support +CHECK_FILE_OFFSET_BITS() +IF(_FILE_OFFSET_BITS) + ADD_DEFINITIONS(-D_FILE_OFFSET_BITS=${_FILE_OFFSET_BITS}) + SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_FILE_OFFSET_BITS=${_FILE_OFFSET_BITS}") +ENDIF() +ADD_DEFINITIONS(-D_LARGEFILE_SOURCE -D_LARGE_FILES) +SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_LARGEFILE_SOURCE -D_LARGE_FILES") + OPTION(ALSOFT_DLOPEN "Check for the dlopen API for loading optional libs" ON) diff --git a/cmake/CheckFileOffsetBits.c b/cmake/CheckFileOffsetBits.c new file mode 100644 index 00000000..de98296e --- /dev/null +++ b/cmake/CheckFileOffsetBits.c @@ -0,0 +1,9 @@ +#include <sys/types.h> + +#define KB ((off_t)(1024)) +#define MB ((off_t)(KB*1024)) +#define GB ((off_t)(MB*1024)) +int tb[((GB+GB+GB) > GB) ? 1 : -1]; + +int main() +{ return 0; } diff --git a/cmake/CheckFileOffsetBits.cmake b/cmake/CheckFileOffsetBits.cmake new file mode 100644 index 00000000..8b549b69 --- /dev/null +++ b/cmake/CheckFileOffsetBits.cmake @@ -0,0 +1,39 @@ +# - Check if the _FILE_OFFSET_BITS macro is needed for large files +# CHECK_FILE_OFFSET_BITS() +# +# The following variables may be set before calling this macro to +# modify the way the check is run: +# +# CMAKE_REQUIRED_FLAGS = string of compile command line flags +# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar) +# CMAKE_REQUIRED_INCLUDES = list of include directories +# Copyright (c) 2009, Chris Robinson +# +# Redistribution and use is allowed according to the terms of the LGPL license. + + +MACRO(CHECK_FILE_OFFSET_BITS) + + IF(NOT DEFINED _FILE_OFFSET_BITS) + MESSAGE(STATUS "Checking _FILE_OFFSET_BITS for large files") + TRY_COMPILE(__WITHOUT_FILE_OFFSET_BITS_64 + ${CMAKE_BINARY_DIR} + ${CMAKE_SOURCE_DIR}/cmake/CheckFileOffsetBits.c + COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}) + IF(NOT __WITHOUT_FILE_OFFSET_BITS_64) + TRY_COMPILE(__WITH_FILE_OFFSET_BITS_64 + ${CMAKE_BINARY_DIR} + ${CMAKE_SOURCE_DIR}/cmake/CheckFileOffsetBits.c + COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} -D_FILE_OFFSET_BITS=64) + ENDIF(NOT __WITHOUT_FILE_OFFSET_BITS_64) + + IF(NOT __WITHOUT_FILE_OFFSET_BITS_64 AND __WITH_FILE_OFFSET_BITS_64) + SET(_FILE_OFFSET_BITS 64 CACHE INTERNAL "_FILE_OFFSET_BITS macro needed for large files") + MESSAGE(STATUS "Checking _FILE_OFFSET_BITS for large files - 64") + ELSE(NOT __WITHOUT_FILE_OFFSET_BITS_64 AND __WITH_FILE_OFFSET_BITS_64) + SET(_FILE_OFFSET_BITS "" CACHE INTERNAL "_FILE_OFFSET_BITS macro needed for large files") + MESSAGE(STATUS "Checking _FILE_OFFSET_BITS for large files - not needed") + ENDIF(NOT __WITHOUT_FILE_OFFSET_BITS_64 AND __WITH_FILE_OFFSET_BITS_64) + ENDIF(NOT DEFINED _FILE_OFFSET_BITS) + +ENDMACRO(CHECK_FILE_OFFSET_BITS)
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