diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 243 |
1 files changed, 23 insertions, 220 deletions
diff --git a/configure.ac b/configure.ac index 74342eb..5ba01c6 100644 --- a/configure.ac +++ b/configure.ac @@ -281,6 +281,7 @@ while test -n "$hname"; do test "$hname_tmp" = "$hname" && break done + ## ---------------------------------------------------------------------- ## Determine build mode (debug, production, clean). ## This has to be done early since the build mode is referred to @@ -2794,63 +2795,18 @@ esac ## AC_MSG_CHECKING([if using special algorithm to convert long double to (unsigned) long values]) +## NOTE: Place all configure test programs into cmake's source file, then use a preprocessor directive +## to select the proper test program. This is done by echoing the #define and cat'ing the cmake +## source file. (HDFFV-9467) + +TEST_SRC="`(echo \"#define H5_LDOUBLE_TO_LONG_SPECIAL_TEST 1\"; cat $srcdir/config/cmake/ConversionTests.c)`" + if test ${ac_cv_sizeof_long_double} = 0; then hdf5_cv_ldouble_to_long_special=${hdf5_cv_ldouble_to_long_special=no} else AC_CACHE_VAL([hdf5_cv_ldouble_to_long_special], [AC_RUN_IFELSE( - [AC_LANG_PROGRAM([ - #include <string.h> - ],[[ - long double ld = 20041683600089727.779961L; - long ll; - unsigned long ull; - unsigned char s[16]; - unsigned char s2[8]; - int ret = 1; - - if(sizeof(long double) == 16 && sizeof(long) == 8) { - /*make sure the long double type has 16 bytes in size and - * 11 bits of exponent. If it is, - *the bit sequence should be like below. It's not - *a decent way to check but this info isn't available. */ - memcpy(s, &ld, 16); - if(s[0]==0x43 && s[1]==0x51 && s[2]==0xcc && s[3]==0xf3 && - s[4]==0x85 && s[5]==0xeb && s[6]==0xc8 && s[7]==0xa0 && - s[8]==0xbf && s[9]==0xcc && s[10]==0x2a && s[11]==0x3c) { - - /* Assign the hexadecimal value of long double type. */ - s[0]=0x43; s[1]=0x51; s[2]=0xcc; s[3]=0xf3; - s[4]=0x85; s[5]=0xeb; s[6]=0xc8; s[7]=0xa0; - s[8]=0xbf; s[9]=0xcc; s[10]=0x2a; s[11]=0x3c; - s[12]=0x3d; s[13]=0x85; s[14]=0x56; s[15]=0x20; - - memcpy(&ld, s, 16); - - ll = (long)ld; - memcpy(s2, &ll, 8); - - /* The library's algorithm converts it to 0x 00 47 33 ce 17 af 22 82 - * and gets wrong value 20041683600089730 on the IBM Power6 Linux. - * But the IBM Power6 Linux converts it to 0x00 47 33 ce 17 af 22 7f - * and gets the correct value 20041683600089727. It uses some special - * algorithm. We're going to define the macro and skip the test until - * we can figure out how they do it. */ - if(s2[0]==0x00 && s2[1]==0x47 && s2[2]==0x33 && s2[3]==0xce && - s2[4]==0x17 && s2[5]==0xaf && s2[6]==0x22 && s2[7]==0x7f) - ret = 0; - - ull = (unsigned long)ld; - memcpy(s2, &ull, 8); - - /* The unsigned long is the same as signed long. */ - if(s2[0]==0x00 && s2[1]==0x47 && s2[2]==0x33 && s2[3]==0xce && - s2[4]==0x17 && s2[5]==0xaf && s2[6]==0x22 && s2[7]==0x7f) - ret = 0; - } - } - exit(ret); - ]])] + [AC_LANG_SOURCE([$TEST_SRC])] , [hdf5_cv_ldouble_to_long_special=yes], [hdf5_cv_ldouble_to_long_special=no],)]) fi @@ -2872,66 +2828,14 @@ fi ## AC_MSG_CHECKING([if using special algorithm to convert (unsigned) long to long double values]) +TEST_SRC="`(echo \"#define H5_LONG_TO_LDOUBLE_SPECIAL_TEST 1\"; cat $srcdir/config/cmake/ConversionTests.c)`" + if test ${ac_cv_sizeof_long_double} = 0; then hdf5_cv_long_to_ldouble_special=${hdf5_cv_long_to_ldouble_special=no} else AC_CACHE_VAL([hdf5_cv_long_to_ldouble_special], [AC_RUN_IFELSE( - [AC_LANG_PROGRAM([ - #include <string.h> - ],[[ - long double ld; - long ll; - unsigned long ull; - unsigned char s[16]; - int flag=0, ret=1; - - /*Determine if long double has 16 byte in size, 11 bit exponent, and - *the bias is 0x3ff */ - if(sizeof(long double) == 16) { - ld = 1.0L; - memcpy(s, &ld, 16); - if(s[0]==0x3f && s[1]==0xf0 && s[2]==0x00 && s[3]==0x00 && - s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00) - flag = 1; - } - - if(flag==1 && sizeof(long)==8) { - ll = 0x003fffffffffffffL; - ld = (long double)ll; - memcpy(s, &ld, 16); - /* The library converts the value to 0x434fffffffffffff8000000000000000. - * In decimal it is 18014398509481982.000000, one value short of the original. - * The IBM Power6 Linux converts it to 0x4350000000000000bff0000000000000. - * The value is correct in decimal. It uses some special - * algorithm. We're going to define the macro and skip the test until - * we can figure out how they do it. */ - if(s[0]==0x43 && s[1]==0x50 && s[2]==0x00 && s[3]==0x00 && - s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00 && - s[8]==0xbf && s[9]==0xf0 && s[10]==0x00 && s[11]==0x00 && - s[12]==0x00 && s[13]==0x00 && s[14]==0x00 && s[15]==0x00) - ret = 0; - } - if(flag==1 && sizeof(unsigned long)==8) { - ull = 0xffffffffffffffffUL; - ld = (long double)ull; - memcpy(s, &ld, 16); - /* Use a different value from signed long to test. The problem is the same - * for both long and unsigned long. The value is 18446744073709551615. - * The library converts the value to 0x43effffffffffffffe000000000000000. - * In decimal it's 18446744073709548544.000000, very different from the original. - * The IBM Power6 Linux converts it to 0x43f0000000000000bff0000000000000. - * The value is correct in decimal. It uses some special - * algorithm. We're going to define the macro and skip the test until - * we can figure out how they do it. */ - if(s[0]==0x43 && s[1]==0xf0 && s[2]==0x00 && s[3]==0x00 && - s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00 && - s[8]==0xbf && s[9]==0xf0 && s[10]==0x00 && s[11]==0x00 && - s[12]==0x00 && s[13]==0x00 && s[14]==0x00 && s[15]==0x00) - ret = 0; - } - exit(ret); - ]])] + [AC_LANG_SOURCE([$TEST_SRC])] , [hdf5_cv_long_to_ldouble_special=yes], [hdf5_cv_long_to_ldouble_special=no],)]) fi @@ -2956,48 +2860,14 @@ fi ## AC_MSG_CHECKING([if correctly converting long double to (unsigned) long long values]) +TEST_SRC="`(echo \"#define H5_LDOUBLE_TO_LLONG_ACCURATE_TEST 1\"; cat $srcdir/config/cmake/ConversionTests.c)`" + if test ${ac_cv_sizeof_long_double} = 0; then hdf5_cv_ldouble_to_llong_accurate=${hdf5_cv_ldouble_to_llong_accurate=no} else AC_CACHE_VAL([hdf5_cv_ldouble_to_llong_accurate], - [AC_RUN_IFELSE([AC_LANG_SOURCE([[ - int main(void) - { - long double ld = 20041683600089727.779961L; - long long ll; - unsigned long long ull; - unsigned char s[16]; - int ret = 0; - - if(sizeof(long double) == 16) { - /*make sure the long double type is the same as the failing type - *which has 16 bytes in size and 11 bits of exponent. If it is, - *the bit sequence should be like below. It's not - *a decent way to check but this info isn't available. */ - memcpy(s, &ld, 16); - if(s[0]==0x43 && s[1]==0x51 && s[2]==0xcc && s[3]==0xf3 && - s[4]==0x85 && s[5]==0xeb && s[6]==0xc8 && s[7]==0xa0 && - s[8]==0xbf && s[9]==0xcc && s[10]==0x2a && s[11]==0x3c) { - - /*slightly adjust the bit sequence (s[8]=0xdf). The converted - *values will go wild on Mac OS 10.4 and IRIX64 6.5.*/ - s[0]=0x43; s[1]=0x51; s[2]=0xcc; s[3]=0xf3; - s[4]=0x85; s[5]=0xeb; s[6]=0xc8; s[7]=0xa0; - s[8]=0xdf; s[9]=0xcc; s[10]=0x2a; s[11]=0x3c; - s[12]=0x3d; s[13]=0x85; s[14]=0x56; s[15]=0x20; - - memcpy(&ld, s, 16); - ll = (long long)ld; - ull = (unsigned long long)ld; - - if(ll != 20041683600089728 || ull != 20041683600089728) - ret = 1; - } - } - done: - exit(ret); - } - ]])], [hdf5_cv_ldouble_to_llong_accurate=yes], [hdf5_cv_ldouble_to_llong_accurate=no],[])]) + [AC_RUN_IFELSE([AC_LANG_SOURCE([$TEST_SRC])], + [hdf5_cv_ldouble_to_llong_accurate=yes], [hdf5_cv_ldouble_to_llong_accurate=no],[])]) fi if test ${hdf5_cv_ldouble_to_llong_accurate} = "yes"; then @@ -3019,52 +2889,14 @@ fi ## AC_MSG_CHECKING([if correctly converting (unsigned) long long to long double values]) +TEST_SRC="`(echo \"#define H5_LLONG_TO_LDOUBLE_CORRECT_TEST 1\"; cat $srcdir/config/cmake/ConversionTests.c)`" + if test ${ac_cv_sizeof_long_double} = 0; then hdf5_cv_llong_to_ldouble_correct=${hdf5_cv_llong_to_ldouble_correct=no} else AC_CACHE_VAL([hdf5_cv_llong_to_ldouble_correct], - [AC_RUN_IFELSE([AC_LANG_SOURCE([[ - int main(void) - { - long double ld; - long long ll; - unsigned long long ull; - unsigned char s[16]; - int flag=0, ret=0; - - /*Determine if long double has 16 byte in size, 11 bit exponent, and - *the bias is 0x3ff */ - if(sizeof(long double) == 16) { - ld = 1.0L; - memcpy(s, &ld, 16); - if(s[0]==0x3f && s[1]==0xf0 && s[2]==0x00 && s[3]==0x00 && - s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00) - flag = 1; - } - - if(flag==1 && sizeof(long long)==8) { - ll = 0x01ffffffffffffffLL; - ld = (long double)ll; - memcpy(s, &ld, 16); - /*Check if the bit sequence is as supposed to be*/ - if(s[0]!=0x43 || s[1]!=0x7f || s[2]!=0xff || s[3]!=0xff || - s[4]!=0xff || s[5]!=0xff || s[6]!=0xff || s[7]!=0xff || - s[8]!=0xf0 || s[9]!=0x00 || s[10]!=0x00 || s[11]!=0x00) - ret = 1; - } - if(flag==1 && sizeof(unsigned long long)==8) { - ull = 0x01ffffffffffffffULL; - ld = (long double)ull; - memcpy(s, &ld, 16); - if(s[0]!=0x43 || s[1]!=0x7f || s[2]!=0xff || s[3]!=0xff || - s[4]!=0xff || s[5]!=0xff || s[6]!=0xff || s[7]!=0xff || - s[8]!=0xf0 || s[9]!=0x00 || s[10]!=0x00 || s[11]!=0x00) - ret = 1; - } - done: - exit(ret); - } - ]])],[hdf5_cv_llong_to_ldouble_correct=yes], [hdf5_cv_llong_to_ldouble_correct=no],[])]) + [AC_RUN_IFELSE([AC_LANG_SOURCE([$TEST_SRC])], + [hdf5_cv_llong_to_ldouble_correct=yes], [hdf5_cv_llong_to_ldouble_correct=no],[])]) fi if test ${hdf5_cv_llong_to_ldouble_correct} = "yes"; then @@ -3358,40 +3190,11 @@ AC_ARG_ENABLE([embedded-libinfo], ## Check if pointer alignments are enforced ## AC_MSG_CHECKING([if alignment restrictions are strictly enforced]) + +TEST_SRC="`(echo \"#define H5_NO_ALIGNMENT_RESTRICTIONS_TEST 1\"; cat $srcdir/config/cmake/ConversionTests.c)`" + AC_RUN_IFELSE([ - AC_LANG_PROGRAM([ - #include <stdlib.h> - #include <string.h> - - typedef struct { - size_t len; - void *p; - } hvl_t; - ], [ - char *chp = "beefs"; - char **chpp = malloc (2 * sizeof (char *)); - char **chpp2; - hvl_t vl = { 12345, (void *) chp }; - hvl_t *vlp; - hvl_t *vlp2; - - memcpy ((void *) ((char *) chpp + 1), &chp, sizeof (char *)); - chpp2 = (char **) ((char *) chpp + 1); - if (strcmp (*chpp2, chp)) { - free (chpp); - return 1; - } - free (chpp); - - vlp = malloc (2 * sizeof (hvl_t)); - memcpy ((void *) ((char *) vlp + 1), &vl, sizeof (hvl_t)); - vlp2 = (hvl_t *) ((char *) vlp + 1); - if (vlp2->len != vl.len || vlp2->p != vl.p) { - free (vlp); - return 1; - } - free (vlp); - ]) + AC_LANG_SOURCE([$TEST_SRC]) ], [ AC_DEFINE([NO_ALIGNMENT_RESTRICTIONS], [1], [Define if we can violate pointer alignment restrictions]) AC_MSG_RESULT([no]) |