Issue #21917 has been updated by nobu (Nobuyoshi Nakada). Probably this may help: ```diff diff --git a/dln.c b/dln.c index 2549f031835..01dfccd0534 100644 --- a/dln.c +++ b/dln.c @@ -506,6 +506,7 @@ static void * dln_load_and_init(const char *file, const char *init_fct_name) { #if defined(_WIN32) || defined(USE_DLN_DLOPEN) +# define DLN_IMPLEMENTED 1 void *handle = dln_open(file); #ifdef RUBY_DLN_CHECK_ABI @@ -523,6 +524,7 @@ dln_load_and_init(const char *file, const char *init_fct_name) return handle; #elif defined(_AIX) +# define DLN_IMPLEMENTED 1 { void (*init_fct)(void); @@ -547,7 +549,7 @@ dln_load_and_init(const char *file, const char *init_fct_name) void * dln_load(const char *file) { -#if defined(_WIN32) || defined(USE_DLN_DLOPEN) +#ifdef DLN_IMPLEMENTED char *init_fct_name; init_funcname(&init_fct_name, file); return dln_load_and_init(file, init_fct_name); @@ -560,7 +562,7 @@ dln_load(const char *file) void * dln_load_feature(const char *file, const char *fname) { -#if defined(_WIN32) || defined(USE_DLN_DLOPEN) +#ifdef DLN_IMPLEMENTED char *init_fct_name; init_funcname(&init_fct_name, fname); return dln_load_and_init(file, init_fct_name); ``` ---------------------------------------- Bug #21917: Unable to build 4.0.1 on AIX 7.2 https://bugs.ruby-lang.org/issues/21917#change-116503 * Author: mhashizume (Michael Hashizume) * Status: Open * ruby -v: 4.0.1 * Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- I'm attempting to build Ruby 4.0.1 on AIX 7.2. We have had successful builds of previous versions of Ruby on this platform, but are starting to see an issue when using miniruby to build Ruby: ``` shell ./miniruby -I./lib -I. -I.ext/common ./tool/runruby.rb --extout=.ext -- --disable-gems -r./powerpc64-aix7.2.0.0-fake ./tool/rbinstall.rb --make="gmake" --dest-dir="" --extout=".ext" --ext-build-dir="./ext" --mflags="-j3 --jobserver-auth=fifo:/tmp//GMfifo9306586" --make-flags=" -j3 --jobserver-auth=fifo:/tmp//GMfifo9306586" --data-mode=0644 --prog-mode=0755 --installed-list .installed.list --mantype="man" --install=all --exclude=doc /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext/common/monitor.rb:10:in 'Kernel#require': false() function is unimplemented on this machine (NotImplementedError) from /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext/common/monitor.rb:10:in '<top (required)>' from /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/lib/rubygems.rb:1452:in '<top (required)>' from /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/lib/rubygems.rb:1452:in 'Kernel#eval' from /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/lib/rubygems.rb:1452:in '<top (required)>' from ./tool/rbinstall.rb:25:in 'Kernel#require' from ./tool/rbinstall.rb:25:in '<main>' ``` I'm not sure where the NotImplementedError is coming from, and when looking at the `truss` output from miniruby, I see a ENOTTY when miniruby attempts to load monitor.so: ```shell accessx("/var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext/powerpc64-aix7.2.0.0/monitor.so", 0, 0) = 0 statx("/", 0x0FFFFFFFFFFFA680, 176, 011) = 0 statx("/var", 0x0FFFFFFFFFFFA680, 176, 011) = 0 statx("/var/tmp", 0x0FFFFFFFFFFFA680, 176, 011) = 0 statx("/var/tmp/tmp.INfzUXAeGi", 0x0FFFFFFFFFFFA680, 176, 011) = 0 statx("/var/tmp/tmp.INfzUXAeGi/ruby-4.0.1", 0x0FFFFFFFFFFFA680, 176, 011) = 0 statx("/var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext", 0x0FFFFFFFFFFFA680, 176, 011) = 0 statx("/var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext/powerpc64-aix7.2.0.0", 0x0FFFFFFFFFFFA680, 176, 011) = 0 statx("/var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext/powerpc64-aix7.2.0.0/monitor.so", 0x0FFFFFFFFFFFA680, 176, 011) = 0 __ksetjmp(0x0000000110019F88, 0x09000000026845A8, 2, 0x000000011001A1D8, 0x0FFFFFFFFFFFB790, 0x0000000022242202, 0x000000011011A658, 0x09000 00000260348) = 0 statx("/var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext/powerpc64-aix7.2.0.0/monitor.so", 0x0FFFFFFFFFFFB800, 176, 0) = 0 kioctl(2, 22528, 0x0000000000000000, 0x0000000000000000) Err#25 ENOTTY /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext/common/monitor.rb:10:in 'Kernel#require': false() function is unimplemented on this machine (NotImpl ementedError) from /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/.ext/common/monitor.rb:10:in '<top (required)>' from /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/lib/rubygems.rb:1452:in '<top (required)>' from /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/lib/rubygems.rb:1452:in 'Kernel#eval' from /var/tmp/tmp.INfzUXAeGi/ruby-4.0.1/lib/rubygems.rb:1452:in '<top (required)>' from ./tool/rbinstall.rb:25:in 'Kernel#require' from ./tool/rbinstall.rb:25:in '<main>' ``` monitor.so is present in the path that miniruby is looking for it. Any pointers on where to start debugging this further or what changes in more recent versions of Ruby could have caused this would be greatly appreciated. Thank you! -- https://bugs.ruby-lang.org/