[MacPorts] #61564: libelf @0.8.13.2 fails to configure on BigSur 11.0.1

[MacPorts]

#61564: libelf @0.8.13.2 fails to configure on BigSur 11.0.1
--------------------+--------------------
 Reporter:  ugr     |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.6.4
 Keywords:          |       Port:  libelf
--------------------+--------------------
 This bug also breaks depended ports like avrdude.

 {{{
 :info:configure Executing:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_libelf/libelf/work/libelf-0.8.13"
 && ./configure$
 :debug:configure system:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_libelf/libelf/work/libelf-0.8.13"
 && ./configure -$
 :info:configure creating cache ./config.cache
 :info:configure checking whether make sets ${MAKE}... yes
 :info:configure checking for gcc... /usr/bin/clang
 :info:configure checking whether the C compiler (/usr/bin/clang -pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk -arch
 x86_64 -L/opt/local/lib -Wl,-headerpad_max_install_nam$
 :info:configure checking whether the C compiler (/usr/bin/clang -pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk -arch
 x86_64 -L/opt/local/lib -Wl,-headerpad_max_install_nam$
 :info:configure checking whether we are using GNU C... yes
 :info:configure checking whether /usr/bin/clang accepts -g... yes
 :info:configure checking how to run the C preprocessor... /usr/bin/clang
 -E
 :info:configure checking for a BSD compatible install... /usr/bin/install
 -c
 :info:configure checking for ranlib... ranlib
 :info:configure checking whether ln -s works... yes
 :info:configure checking for ANSI C header files... no
 :info:configure checking for unistd.h... yes
 :info:configure checking for stdint.h... yes
 :info:configure checking for fcntl.h... yes
 :info:configure checking for elf.h... no
 :info:configure checking for sys/elf.h... no
 :info:configure checking for link.h... no
 :info:configure checking for sys/link.h... no
 :info:configure checking if /usr/bin/clang can compile elf.h... no
 :info:configure checking for ar.h... yes
 :info:configure checking for libelf.h... no
 :info:configure checking for nlist.h... yes
 :info:configure checking for gelf.h... no
 :info:configure checking whether to install <libelf.h>, <nlist.h> and
 <gelf.h>... no
 :info:configure checking for working const... yes
 :info:configure checking for off_t... yes
 :info:configure checking for size_t... yes
 :info:configure checking size of short... 0
 :info:configure checking size of int... 0
 :info:configure checking size of long... 0
 :info:configure checking size of long long... 0
 :info:configure checking size of __int64... 0
 :info:configure checking for 64-bit integer... no
 :info:configure checking for 32-bit integer... no
 :info:configure configure: error: neither int nor long is 32-bit
 :info:configure Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_libelf/libelf/work/libelf-0.8.13"
 && ./conf$
 }}}


 Error reasons from
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_libelf/libelf/work/libelf-0.8.13/config.log:

 {{{
 configure:1060: /usr/bin/clang -E -I/opt/local/include
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk
 conftest.c >/dev/null 2>conftest.out
 configure:1127: /usr/bin/clang -o conftest -pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk -arch
 x86_64 -I/opt/local/include
 -isysroot/Library/Developer/CommandLineTools/SD$
 configure:1122:67: error: implicitly declaring library function 'exit'
 with type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-
 function-declaration]
 if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
                                                                   ^
 configure:1122:67: note: include the header <stdlib.h> or explicitly
 provide a declaration for 'exit'
 1 error generated.
 1 error generated.
 configure: failed program was:
 #line 1116 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
 #define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
 #define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
 int main () { int i; for (i = 0; i < 256; i++)
 if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 }}}

 {{{
 configure:1410: checking for off_t
 configure:1443: checking for size_t
 configure:1477: checking size of short
 configure:1496: /usr/bin/clang -o conftest -pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk -arch
 x86_64 -I/opt/local/include
 -isysroot/Library/Developer/CommandLineTools/SD$
 configure:1487:1: warning: type specifier missing, defaults to 'int'
 [-Wimplicit-int]
 main()
 ^
 configure:1490:11: error: implicitly declaring library function 'exit'
 with type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-
 function-declaration]
   if (!f) exit(1);
           ^
 configure:1490:11: note: include the header <stdlib.h> or explicitly
 provide a declaration for 'exit'
 configure:1491:22: warning: format specifies type 'int' but the argument
 has type 'unsigned long' [-Wformat]
   fprintf(f, "%d\n", sizeof(short));
               ~~     ^~~~~~~~~~~~~
               %lu
 2 warnings and 1 error generated.
 configure: failed program was:
 #line 1485 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
 {
   FILE *f=fopen("conftestval", "w");
   if (!f) exit(1);
   fprintf(f, "%d\n", sizeof(short));
   exit(0);
 }
 }}}

 It seems that the default include files in BigSur changed so that
 functions from stdlib.h are not automatically included by stdio.h anymore.
 I think the configure tests can be fixed by simply adding #include
 <stdlib.h> (but i don't know how to change/patch a port...).

-- 
Ticket URL: <https://trac.macports.org/ticket/61564>
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