Hdf5 1 10 merges of CMake changes

config/cmake/ConfigureChecks.cmake

@@ -221,18 +221,125 @@ 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

config/cmake/H5pubconf.h.in

@@ -32,7 +32,7 @@
 /* Define the default plugins path to compile */
 #cmakedefine H5_DEFAULT_PLUGINDIR "@H5_DEFAULT_PLUGINDIR@"
 
-/* Define if `dev_t' is a scalar */
+/* Define if dev_t is a scalar */
 #cmakedefine H5_DEV_T_IS_SCALAR @H5_DEV_T_IS_SCALAR@
 
 /* Define to dummy `main' function (if any) required to link to the Fortran
@@ -88,6 +88,9 @@
 /* Define to 1 if you have the `alarm' function. */
 #cmakedefine H5_HAVE_ALARM @H5_HAVE_ALARM@
 
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#cmakedefine H5_HAVE_ARPA_INET_H @H5_HAVE_ARPA_INET_H@
+
 /* Define to 1 if you have the `asprintf' function. */
 #cmakedefine H5_HAVE_ASPRINTF @H5_HAVE_ASPRINTF@
 
@@ -101,9 +104,6 @@
 /* Define if the compiler understands the __func__ keyword */
 #cmakedefine H5_HAVE_C99_FUNC @H5_HAVE_C99_FUNC@
 
-/* Define to 1 if you have the <arpa/inet.h> header file. */
-#cmakedefine H5_HAVE_ARPA_INET_H @H5_HAVE_ARPA_INET_H@
-
 /* Define to 1 if you have the `clock_gettime' function. */
 #cmakedefine H5_HAVE_CLOCK_GETTIME @H5_HAVE_CLOCK_GETTIME@
 
@@ -267,7 +267,7 @@
 /* Define to 1 if you have the <memory.h> header file. */
 #cmakedefine H5_HAVE_MEMORY_H @H5_HAVE_MEMORY_H@
 
-/* Define if we can build the Mirror VFD */
+/* Define whether the Mirror virtual file driver (VFD) will be compiled */
 #cmakedefine H5_HAVE_MIRROR_VFD @H5_HAVE_MIRROR_VFD@
 
 /* Define if we have MPE support */
@@ -276,10 +276,10 @@
 /* Define to 1 if you have the <mpe.h> header file. */
 #cmakedefine H5_HAVE_MPE_H @H5_HAVE_MPE_H@
 
-/* Define if MPI_Comm_c2f and MPI_Comm_f2c exists */
+/* Define if MPI_Comm_c2f and MPI_Comm_f2c exist */
 #cmakedefine H5_HAVE_MPI_MULTI_LANG_Comm @H5_HAVE_MPI_MULTI_LANG_Comm@
 
-/* Define if MPI_Info_c2f and MPI_Info_f2c exists */
+/* Define if MPI_Info_c2f and MPI_Info_f2c exist */
 #cmakedefine H5_HAVE_MPI_MULTI_LANG_Info @H5_HAVE_MPI_MULTI_LANG_Info@
 
 /* Define to 1 if you have the <netdb.h> header file. */
@@ -483,7 +483,7 @@
 /* Define if the compiler understands __inline__ */
 #cmakedefine H5_HAVE___INLINE__ @H5_HAVE___INLINE__@
 
-/* Define if the library will ignore file locks when disabled */                 
+/* Define if the library will ignore file locks when disabled */
 #cmakedefine H5_IGNORE_DISABLED_FILE_LOCKS @H5_IGNORE_DISABLED_FILE_LOCKS@
 
 /* Define if the high-level library headers should be included in hdf5.h */
@@ -542,10 +542,10 @@
 #define H5_PACKAGE_VERSION "@HDF5_PACKAGE_VERSION_STRING@"
 
 /* Determine the maximum decimal precision in C */
-#cmakedefine H5_PAC_C_MAX_REAL_PRECISION @H5_PAC_C_MAX_REAL_PRECISION@
+#define H5_PAC_C_MAX_REAL_PRECISION @H5_PAC_C_MAX_REAL_PRECISION@
 
 /* Define Fortran Maximum Real Decimal Precision */
-#cmakedefine H5_PAC_FC_MAX_REAL_PRECISION @H5_PAC_FC_MAX_REAL_PRECISION@
+#define H5_PAC_FC_MAX_REAL_PRECISION @H5_PAC_FC_MAX_REAL_PRECISION@
 
 /* Width for printf() for type `long long' or `__int64', use `ll' */
 #cmakedefine H5_PRINTF_LL_WIDTH @H5_PRINTF_LL_WIDTH@