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authorMark Adler <madler@alumni.caltech.edu>2016-12-03 10:27:14 -0800
committerMark Adler <madler@alumni.caltech.edu>2016-12-04 07:48:48 -0800
commitca50ebd4dfd08dfd7e8c8bb087278e158cd67720 (patch)
tree9262ad9bb1dde6992b41093614d75d63eea2bf31 /configure
parentc5ee34c28a9144b1b5a5021d05ed29940c53010c (diff)
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Create z_size_t and z_ssize_t types.
Normally these are set to size_t and ssize_t. But if they do not exist, then they are set to the smallest integer type that can contain a pointer. size_t is unsigned and ssize_t is signed.
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure106
1 files changed, 94 insertions, 12 deletions
diff --git a/configure b/configure
index 9f2e82e..f60585b 100755
--- a/configure
+++ b/configure
@@ -181,9 +181,12 @@ show $cc -c $test.c
181if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then 181if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
182 echo ... using gcc >> configure.log 182 echo ... using gcc >> configure.log
183 CC="$cc" 183 CC="$cc"
184 CFLAGS="${CFLAGS--O3} ${ARCHS}" 184 CFLAGS="${CFLAGS--O3}"
185 SFLAGS="${CFLAGS--O3} -fPIC" 185 SFLAGS="${CFLAGS--O3} -fPIC"
186 LDFLAGS="${LDFLAGS} ${ARCHS}" 186 if test "$ARCHS"; then
187 CFLAGS="${CFLAGS} ${ARCHS}"
188 LDFLAGS="${LDFLAGS} ${ARCHS}"
189 fi
187 if test $build64 -eq 1; then 190 if test $build64 -eq 1; then
188 CFLAGS="${CFLAGS} -m64" 191 CFLAGS="${CFLAGS} -m64"
189 SFLAGS="${SFLAGS} -m64" 192 SFLAGS="${SFLAGS} -m64"
@@ -360,16 +363,16 @@ if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
360 } 363 }
361 echo - using any output from compiler to indicate an error >> configure.log 364 echo - using any output from compiler to indicate an error >> configure.log
362else 365else
363try() 366 try()
364{ 367 {
365 show $* 368 show $*
366 ( $* ) >> configure.log 2>&1 369 ( $* ) >> configure.log 2>&1
367 ret=$? 370 ret=$?
368 if test $ret -ne 0; then 371 if test $ret -ne 0; then
369 echo "(exit code "$ret")" >> configure.log 372 echo "(exit code "$ret")" >> configure.log
370 fi 373 fi
371 return $ret 374 return $ret
372} 375 }
373fi 376fi
374 377
375tryboth() 378tryboth()
@@ -445,6 +448,85 @@ esac
445 448
446echo >> configure.log 449echo >> configure.log
447 450
451# check for size_t
452cat > $test.c <<EOF
453#include <stdio.h>
454#include <stdlib.h>
455size_t dummy = 0;
456EOF
457if try $CC -c $CFLAGS $test.c; then
458 echo "Checking for size_t... Yes." | tee -a configure.log
459 need_sizet=0
460else
461 echo "Checking for size_t... No." | tee -a configure.log
462 need_sizet=1
463fi
464
465echo >> configure.log
466
467# check for ssize_t
468cat > $test.c <<EOF
469#include <sys/types.h>
470ssize_t dummy = 0;
471EOF
472if try $CC -c $CFLAGS $test.c; then
473 echo "Checking for ssize_t... Yes." | tee -a configure.log
474 need_ssizet=0
475else
476 echo "Checking for ssize_t... No." | tee -a configure.log
477 need_ssizet=1
478fi
479
480echo >> configure.log
481
482# find the size_t integer type, if needed
483if test $need_sizet -eq 1 -o $need_ssizet -eq 1; then
484 cat > $test.c <<EOF
485long long dummy = 0;
486EOF
487 if try $CC -c $CFLAGS $test.c; then
488 echo "Checking for long long... Yes." | tee -a configure.log
489 cat > $test.c <<EOF
490#include <stdio.h>
491int main(void) {
492 if (sizeof(void *) <= sizeof(int)) puts("int");
493 else if (sizeof(void *) <= sizeof(long)) puts("long");
494 else puts("long long");
495 return 0;
496}
497EOF
498 else
499 echo "Checking for long long... No." | tee -a configure.log
500 cat > $test.c <<EOF
501#include <stdio.h>
502int main(void) {
503 if (sizeof(void *) <= sizeof(int)) puts("int");
504 else puts("long");
505 return 0;
506}
507EOF
508 fi
509 if try $CC $CFLAGS -o $test $test.c; then
510 sizet=`./$test`
511 echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log
512 else
513 echo "Failed to find a pointer-size integer type." | tee -a configure.log
514 leave 1
515 fi
516fi
517
518if test $need_sizet -eq 1; then
519 CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}"
520 SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}"
521fi
522
523if test $need_ssizet -eq 1; then
524 CFLAGS="${CFLAGS} -DNO_SSIZE_T=${sizet}"
525 SFLAGS="${SFLAGS} -DNO_SSIZE_T=${sizet}"
526fi
527
528echo >> configure.log
529
448# check for large file support, and if none, check for fseeko() 530# check for large file support, and if none, check for fseeko()
449cat > $test.c <<EOF 531cat > $test.c <<EOF
450#include <sys/types.h> 532#include <sys/types.h>