summaryrefslogtreecommitdiffstats
path: root/configure.ac
diff options
context:
space:
mode:
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac243
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])