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Add configure check for gzclearerr() when using system zlib.

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This commit is contained in:
Todd C. Miller
2022-02-24 19:13:53 -07:00
parent 68bc030c0c
commit 42f735c8dd
2 changed files with 11 additions and 11 deletions
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20
configure vendored
View File

@@ -26241,9 +26241,9 @@ fi
case "$enable_zlib" in case "$enable_zlib" in
yes) yes)
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gzdopen in -lz" >&5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for gzclearerr in -lz" >&5
printf %s "checking for gzdopen in -lz... " >&6; } printf %s "checking for gzclearerr in -lz... " >&6; }
if test ${ac_cv_lib_z_gzdopen+y} if test ${ac_cv_lib_z_gzclearerr+y}
then : then :
printf %s "(cached) " >&6 printf %s "(cached) " >&6
else $as_nop else $as_nop
@@ -26255,28 +26255,28 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* Override any GCC internal prototype to avoid an error. /* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */ builtin and then its argument prototype would still apply. */
char gzdopen (); char gzclearerr ();
int int
main (void) main (void)
{ {
return gzdopen (); return gzclearerr ();
; ;
return 0; return 0;
} }
_ACEOF _ACEOF
if ac_fn_c_try_link "$LINENO" if ac_fn_c_try_link "$LINENO"
then : then :
ac_cv_lib_z_gzdopen=yes ac_cv_lib_z_gzclearerr=yes
else $as_nop else $as_nop
ac_cv_lib_z_gzdopen=no ac_cv_lib_z_gzclearerr=no
fi fi
rm -f core conftest.err conftest.$ac_objext conftest.beam \ rm -f core conftest.err conftest.$ac_objext conftest.beam \
conftest$ac_exeext conftest.$ac_ext conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS LIBS=$ac_check_lib_save_LIBS
fi fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_gzdopen" >&5 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_gzclearerr" >&5
printf "%s\n" "$ac_cv_lib_z_gzdopen" >&6; } printf "%s\n" "$ac_cv_lib_z_gzclearerr" >&6; }
if test "x$ac_cv_lib_z_gzdopen" = xyes if test "x$ac_cv_lib_z_gzclearerr" = xyes
then : then :
for ac_header in zlib.h for ac_header in zlib.h

2
configure.ac
View File

@@ -3584,7 +3584,7 @@ dnl prepend the include dir to make sure we get the right zlib header.
dnl dnl
case "$enable_zlib" in case "$enable_zlib" in
yes) yes)
AC_CHECK_LIB(z, gzdopen, [ AC_CHECK_LIB(z, gzclearerr, [
AC_CHECK_HEADERS([zlib.h], [ZLIB="-lz"], [enable_zlib=builtin]) AC_CHECK_HEADERS([zlib.h], [ZLIB="-lz"], [enable_zlib=builtin])
]) ])
;; ;;