diff options
Diffstat (limited to 'config/cmake/ConfigureChecks.cmake')
| -rw-r--r-- | config/cmake/ConfigureChecks.cmake | 115 |
1 files changed, 111 insertions, 4 deletions
diff --git a/config/cmake/ConfigureChecks.cmake b/config/cmake/ConfigureChecks.cmake index 19e7dce..0717628 100644 --- a/config/cmake/ConfigureChecks.cmake +++ b/config/cmake/ConfigureChecks.cmake @@ -213,18 +213,125 @@ endif() # Check if C has __float128 extension #----------------------------------------------------------------------------- -CHECK_TYPE_SIZE("__float128" ${HDF_PREFIX}_SIZEOF___FLOAT128) -if (${${HDF_PREFIX}_SIZEOF___FLOAT128}) +HDF_CHECK_TYPE_SIZE(__float128 _SIZEOF___FLOAT128) +if (${_SIZEOF___FLOAT128}) set (${HDF_PREFIX}_HAVE_FLOAT128 1) + set (${HDF_PREFIX}_SIZEOF___FLOAT128 ${_SIZEOF___FLOAT128}) else () set (${HDF_PREFIX}_HAVE_FLOAT128 0) set (${HDF_PREFIX}_SIZEOF___FLOAT128 0) endif () -CHECK_TYPE_SIZE("_Quad" ${HDF_PREFIX}_SIZEOF__QUAD) -if (NOT ${${HDF_PREFIX}_SIZEOF__QUAD}) +HDF_CHECK_TYPE_SIZE(_Quad _SIZEOF__QUAD) +if (NOT ${_SIZEOF__QUAD}) set (${HDF_PREFIX}_SIZEOF__QUAD 0) +else () + set (${HDF_PREFIX}_SIZEOF__QUAD ${_SIZEOF__QUAD}) +endif () + +#----------------------------------------------------------------------------- +# The provided CMake C macros don't provide a general compile/run function +# so this one is used. +#----------------------------------------------------------------------------- +macro (C_RUN FUNCTION_NAME SOURCE_CODE RETURN_VAR) + if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0") + message (VERBOSE "Detecting C ${FUNCTION_NAME}") + endif () + file (WRITE + ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCCompiler1.c + ${SOURCE_CODE} + ) + TRY_RUN (RUN_RESULT_VAR COMPILE_RESULT_VAR + ${CMAKE_BINARY_DIR} + ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCCompiler1.c + COMPILE_DEFINITIONS "-D_SIZEOF___FLOAT128=${H5_SIZEOF___FLOAT128};-D_HAVE_QUADMATH_H=${H5_HAVE_QUADMATH_H}" + COMPILE_OUTPUT_VARIABLE COMPILEOUT + RUN_OUTPUT_VARIABLE OUTPUT_VAR + ) + + set (${RETURN_VAR} ${OUTPUT_VAR}) + + if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0") + message (VERBOSE "* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ") + message (VERBOSE "Test COMPILE_RESULT_VAR ${COMPILE_RESULT_VAR} ") + message (VERBOSE "Test COMPILE_OUTPUT ${COMPILEOUT} ") + message (VERBOSE "* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ") + message (VERBOSE "Test RUN_RESULT_VAR ${RUN_RESULT_VAR} ") + message (VERBOSE "* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ") + endif () + + if (${COMPILE_RESULT_VAR}) + if (${RUN_RESULT_VAR} MATCHES 0) + set (${RUN_RESULT_VAR} 1 CACHE INTERNAL "Have C function ${FUNCTION_NAME}") + if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0") + message (VERBOSE "Testing C ${FUNCTION_NAME} - OK") + endif () + file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + "Determining if the C ${FUNCTION_NAME} exists passed with the following output:\n" + "${OUTPUT_VAR}\n\n" + ) + else () + if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0") + message (VERBOSE "Testing C ${FUNCTION_NAME} - Fail") + endif () + set (${RUN_RESULT_VAR} 0 CACHE INTERNAL "Have C function ${FUNCTION_NAME}") + file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + "Determining if the C ${FUNCTION_NAME} exists failed with the following output:\n" + "${OUTPUT_VAR}\n\n") + endif () + else () + message (FATAL_ERROR "Compilation of C ${FUNCTION_NAME} - Failed") + endif () +endmacro () + +set (PROG_SRC + " +#include <float.h>\n\ +#include <stdio.h>\n\ +#define CHECK_FLOAT128 _SIZEOF___FLOAT128\n\ +#if CHECK_FLOAT128!=0\n\ +#if _HAVE_QUADMATH_H!=0\n\ +#include <quadmath.h>\n\ +#endif\n\ +#ifdef FLT128_DIG\n\ +#define C_FLT128_DIG FLT128_DIG\n\ +#else\n\ +#define C_FLT128_DIG 0\n\ +#endif\n\ +#else\n\ +#define C_FLT128_DIG 0\n\ +#endif\n\ +#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L\n\ +#define C_LDBL_DIG DECIMAL_DIG\n\ +#else\n\ +#define C_LDBL_DIG LDBL_DIG\n\ +#endif\n\nint main() {\nFILE *pFile = fopen(\"pac_Cconftest.out\",\"w\")\\\;\nfprintf(pFile, \"\\%d\\\;\\%d\\\;\", C_LDBL_DIG, C_FLT128_DIG)\\\;\n\nreturn 0\\\;\n}\n + " +) + +C_RUN ("maximum decimal precision for C" ${PROG_SRC} PROG_RES) +file (READ "${CMAKE_BINARY_DIR}/pac_Cconftest.out" PROG_OUTPUT4) +message (STATUS "Testing maximum decimal precision for C - ${PROG_OUTPUT4}") + +# dnl The output from the above program will be: +# dnl -- long double decimal precision -- __float128 decimal precision + +list (GET PROG_OUTPUT4 0 H5_LDBL_DIG) +list (GET PROG_OUTPUT4 1 H5_FLT128_DIG) + +if (${HDF_PREFIX}_SIZEOF___FLOAT128 EQUAL 0 OR FLT128_DIG EQUAL 0) + set (${HDF_PREFIX}_HAVE_FLOAT128 0) + set (${HDF_PREFIX}_SIZEOF___FLOAT128 0) + set (_PAC_C_MAX_REAL_PRECISION ${H5_LDBL_DIG}) +else () + set (_PAC_C_MAX_REAL_PRECISION ${H5_FLT128_DIG}) +endif () +if (NOT ${_PAC_C_MAX_REAL_PRECISION}) + set (${HDF_PREFIX}_PAC_C_MAX_REAL_PRECISION 0) +else () + set (${HDF_PREFIX}_PAC_C_MAX_REAL_PRECISION ${_PAC_C_MAX_REAL_PRECISION}) endif () +message (STATUS "maximum decimal precision for C var - ${${HDF_PREFIX}_PAC_C_MAX_REAL_PRECISION}") #----------------------------------------------------------------------------- # Macro to determine the various conversion capabilities |