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[trunk] make large file support variables persistent in CMake to allow reconfiguration

This commit is contained in:
Julien Malik 2011-11-30 19:43:48 +00:00
parent a361f618a1
commit c39bea2017
3 changed files with 60 additions and 49 deletions
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1
CMake/TestLargeFiles.c.cmake.in
View File

@ -1,5 +1,4 @@
#cmakedefine _LARGEFILE_SOURCE
#cmakedefine _LARGEFILE64_SOURCE
#cmakedefine _LARGE_FILES
#cmakedefine _FILE_OFFSET_BITS @_FILE_OFFSET_BITS@

90
CMake/TestLargeFiles.cmake
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@ -3,17 +3,21 @@
# OPJ_TEST_LARGE_FILES(VARIABLE)
#
# VARIABLE will be set to true if off_t is 64 bits, and fseeko/ftello present.
# This macro will also set defines necessary enable large file support, for instance
# This macro will also defines the necessary variable enable large file support, for instance
# _LARGE_FILES
# _LARGEFILE_SOURCE
# _FILE_OFFSET_BITS 64
# HAVE_FSEEKO
#
# However, it is YOUR job to make sure these defines are set in a CMakedefine so they
# However, it is YOUR job to make sure these defines are set in a #cmakedefine so they
# end up in a config.h file that is included in your source if necessary!
#
# Adapted from Gromacs project (http://www.gromacs.org/)
# by Julien Malik
#
MACRO(OPJ_TEST_LARGE_FILES VARIABLE)
IF(NOT DEFINED ${VARIABLE})
IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
# On most platforms it is probably overkill to first test the flags for 64-bit off_t,
# and then separately fseeko. However, in the future we might have 128-bit filesystems
@ -61,59 +65,69 @@ MACRO(OPJ_TEST_LARGE_FILES VARIABLE)
endif(FILE64_OK)
endif(NOT FILE64_OK)
if(NOT FILE64_OK)
# now check for Windows stuff
TRY_COMPILE(FILE64_OK "${PROJECT_BINARY_DIR}"
"${PROJECT_SOURCE_DIR}/CMake/TestWindowsFSeek.c")
if(FILE64_OK)
MESSAGE(STATUS "Checking for 64-bit off_t - present with _fseeki64")
set(HAVE__FSEEKI64 1)
endif(FILE64_OK)
endif(NOT FILE64_OK)
#if(NOT FILE64_OK)
# # now check for Windows stuff
# TRY_COMPILE(FILE64_OK "${PROJECT_BINARY_DIR}"
# "${PROJECT_SOURCE_DIR}/CMake/TestWindowsFSeek.c")
# if(FILE64_OK)
# MESSAGE(STATUS "Checking for 64-bit off_t - present with _fseeki64")
# set(HAVE__FSEEKI64 1)
# endif(FILE64_OK)
#endif(NOT FILE64_OK)
if(NOT FILE64_OK)
MESSAGE(STATUS "Checking for 64-bit off_t - not present")
else(NOT FILE64_OK)
endif(NOT FILE64_OK)
SET(_FILE_OFFSET_BITS ${_FILE_OFFSET_BITS} CACHE INTERNAL "Result of test for needed _FILE_OFFSET_BITS=64")
SET(_LARGE_FILES ${_LARGE_FILES} CACHE INTERNAL "Result of test for needed _LARGE_FILES")
SET(_LARGEFILE_SOURCE ${_LARGEFILE_SOURCE} CACHE INTERNAL "Result of test for needed _LARGEFILE_SOURCE")
# Set the flags we might have determined to be required above
configure_file("${PROJECT_SOURCE_DIR}/CMake/TestLargeFiles.c.cmake.in"
CONFIGURE_FILE("${PROJECT_SOURCE_DIR}/CMake/TestLargeFiles.c.cmake.in"
"${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
MESSAGE(STATUS "Checking for fseeko/ftello")
# Test if ftello/fseeko are available
TRY_COMPILE(FSEEKO_COMPILE_OK "${PROJECT_BINARY_DIR}"
"${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
if(FSEEKO_COMPILE_OK)
MESSAGE(STATUS "Checking for fseeko/ftello - present")
endif(FSEEKO_COMPILE_OK)
if(NOT FSEEKO_COMPILE_OK)
# glibc 2.2 neds _LARGEFILE_SOURCE for fseeko (but not 64-bit off_t...)
TRY_COMPILE(FSEEKO_COMPILE_OK "${PROJECT_BINARY_DIR}"
# Test if ftello/fseeko are available
TRY_COMPILE(FSEEKO_COMPILE_OK
"${PROJECT_BINARY_DIR}"
"${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
IF(FSEEKO_COMPILE_OK)
MESSAGE(STATUS "Checking for fseeko/ftello - present")
ENDIF(FSEEKO_COMPILE_OK)
IF(NOT FSEEKO_COMPILE_OK)
# glibc 2.2 needs _LARGEFILE_SOURCE for fseeko (but not for 64-bit off_t...)
TRY_COMPILE(FSEEKO_COMPILE_OK
"${PROJECT_BINARY_DIR}"
"${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c"
COMPILE_DEFINITIONS "-D_LARGEFILE_SOURCE" )
if(FSEEKO_COMPILE_OK)
IF(FSEEKO_COMPILE_OK)
MESSAGE(STATUS "Checking for fseeko/ftello - present with _LARGEFILE_SOURCE")
set(_LARGEFILE_SOURCE 1)
endif(FSEEKO_COMPILE_OK)
endif(NOT FSEEKO_COMPILE_OK)
endif(NOT FILE64_OK)
SET(_LARGEFILE_SOURCE ${_LARGEFILE_SOURCE} CACHE INTERNAL "Result of test for needed _LARGEFILE_SOURCE")
ENDIF(FSEEKO_COMPILE_OK)
ENDIF(NOT FSEEKO_COMPILE_OK)
if(FSEEKO_COMPILE_OK)
SET(${VARIABLE} 1 CACHE INTERNAL "Result of test for large file support" FORCE)
set(HAVE_FSEEKO 1)
SET(HAVE_FSEEKO ON CACHE INTERNAL "Result of test for fseeko/ftello")
else(FSEEKO_COMPILE_OK)
if (HAVE__FSEEKI64)
SET(${VARIABLE} 1 CACHE INTERNAL "Result of test for large file support" FORCE)
SET(HAVE__FSEEKI64 1 CACHE INTERNAL "Windows 64-bit fseek" FORCE)
else (HAVE__FSEEKI64)
MESSAGE(STATUS "Checking for fseeko/ftello - not found")
SET(${VARIABLE} 0 CACHE INTERNAL "Result of test for large file support" FORCE)
endif (HAVE__FSEEKI64)
SET(HAVE_FSEEKO OFF CACHE INTERNAL "Result of test for fseeko/ftello")
endif(FSEEKO_COMPILE_OK)
ENDIF(NOT DEFINED ${VARIABLE})
if(FILE64_OK AND FSEEKO_COMPILE_OK)
MESSAGE(STATUS "Large File support - found")
SET(${VARIABLE} ON CACHE INTERNAL "Result of test for large file support")
else(FILE64_OK AND FSEEKO_COMPILE_OK)
MESSAGE(STATUS "Large File support - not found")
SET(${VARIABLE} OFF CACHE INTERNAL "Result of test for large file support")
endif(FILE64_OK AND FSEEKO_COMPILE_OK)
ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
ENDMACRO(OPJ_TEST_LARGE_FILES VARIABLE)

2
opj_config.h.cmake.in
View File

@ -16,11 +16,9 @@
#cmakedefine HAVE_TIFF_H
#cmakedefine _LARGEFILE_SOURCE
#cmakedefine _LARGEFILE64_SOURCE
#cmakedefine _LARGE_FILES
#cmakedefine _FILE_OFFSET_BITS @_FILE_OFFSET_BITS@
#cmakedefine HAVE_FSEEKO
#cmakedefine HAVE__FSEEKI64
#cmakedefine HAVE_LIBLCMS1