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commit 85aed0c60431104446bb904d44066be0bae225d1
Author: Jerry James <loganjerry@gmail.com>
Date:   Tue Nov 22 08:56:51 2022 -0700

    Migrate K&R C in the config scripts to ANSI C

diff --git autoconf/alsa autoconf/alsa
index 028a1979..3d354afb 100755
--- autoconf/alsa
+++ autoconf/alsa
@@ -72,6 +72,7 @@ cat > $file.c <<EOF
  *  This extra small demo sends a random samples to your speakers.
  */
 
+#include <stdio.h>
 #include <alsa/asoundlib.h>
 
 static char *device = "default";                        /* playback device */
diff --git autoconf/ccoptim autoconf/ccoptim
index 297fafdc..117bbb39 100755
--- autoconf/ccoptim
+++ autoconf/ccoptim
@@ -85,6 +85,8 @@ fi
 #*    allocations. We try to detect this in the Bigloo configuration.  */
 #*---------------------------------------------------------------------*/
 cat > $file2.c <<EOF
+extern int failure_then_exit(int);
+extern int foo(int);
 int gcc3xxx_bug( int x ) {
    /* This function is badly compiled, the value of x is not restored */
    /* after the call to foo. This is supposed to be fixed             */
diff --git autoconf/environ autoconf/environ
index a6ec506c..dc2adbe6 100755
--- autoconf/environ
+++ autoconf/environ
@@ -52,9 +52,7 @@ fi
 cat > $file.c <<EOF
 #include <unistd.h>
 
-main( argc, argv )
-int   argc;
-char *argv[];
+int main( int argc, char *argv[] )
 {
    extern char **environ;
    return (environ != 0) && (&execv != 0);
diff --git autoconf/gccattrs autoconf/gccattrs
index 592b525d..1b2a56d0 100755
--- autoconf/gccattrs
+++ autoconf/gccattrs
@@ -73,7 +73,7 @@ __malloc void *foo() {
   return malloc( 10 );
 }
 
-__noreturn stop() {
+__noreturn void stop() {
   exit( 0 );
 }
 
diff --git autoconf/gchavedoblocking autoconf/gchavedoblocking
index 111ff9c7..6374a0fe 100755
--- autoconf/gchavedoblocking
+++ autoconf/gchavedoblocking
@@ -74,7 +74,7 @@ int check_addr( long a1, long a2 ) {
     return a1 > a2;
 }
 
-main( int argc, char *argv[] ) {
+int main( int argc, char *argv[] ) {
    GC_init();
    if( check_addr( &GC_do_blocking, &main ) ) puts( "yes" ); else puts( "yes" );
    return 0;
diff --git autoconf/gchavestartblocking autoconf/gchavestartblocking
index f85f16c8..1c9bc0b0 100755
--- autoconf/gchavestartblocking
+++ autoconf/gchavestartblocking
@@ -70,7 +70,7 @@ cat > $file.c <<EOF
 #include <stdio.h>
 extern GC_start_blocking();
 
-main( int argc, char *argv[] ) {
+int main( int argc, char *argv[] ) {
    GC_init();
    if( GC_start_blocking() ) puts( "yes" ); else puts( "yes" );
    return 0;
diff --git autoconf/getaddrinfo autoconf/getaddrinfo
index bf035e71..130e0c29 100755
--- autoconf/getaddrinfo
+++ autoconf/getaddrinfo
@@ -75,8 +75,9 @@ cat > $file.c <<EOF
 #ifdef BGL_ANDROID
 #  include <linux/in.h>
 #endif
+#include <arpa/inet.h>
 
-main( int argc, char *argv[] ) {
+int main( int argc, char *argv[] ) {
    int status;
    struct addrinfo hints;
    struct addrinfo *res, *rp;       
diff --git autoconf/gethwaddrs autoconf/gethwaddrs
index 7ecd0330..94f8fa11 100755
--- autoconf/gethwaddrs
+++ autoconf/gethwaddrs
@@ -58,6 +58,8 @@ fi
 #*---------------------------------------------------------------------*/
 cat > $file.c <<EOF
 #include <stdio.h>
+#include <string.h>
+#include <unistd.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>    
 #include <sys/socket.h>
diff --git autoconf/inet_aton autoconf/inet_aton
index 6b4abb92..d9758957 100755
--- autoconf/inet_aton
+++ autoconf/inet_aton
@@ -72,8 +72,9 @@ cat > $file.c <<EOF
 #endif
 #include <netinet/in.h>
 #include <netinet/tcp.h>
+#include <arpa/inet.h>
 
-main( int argc, char *argv[] ) {
+int main( int argc, char *argv[] ) {
    return (inet_aton( "127.0.0.1", (void *)argv ) > 0);
 }
 EOF
diff --git autoconf/inet_pton autoconf/inet_pton
index 47d71f3c..a101968b 100755
--- autoconf/inet_pton
+++ autoconf/inet_pton
@@ -81,8 +81,9 @@ cat > $file.c <<EOF
 #endif
 #include <netinet/in.h>
 #include <netinet/tcp.h>
+#include <arpa/inet.h>
 
-main( int argc, char *argv[] ) {
+int main( int argc, char *argv[] ) {
    return (inet_pton( AF_INET, "127.0.0.1", (void *)argv ) > 0);
 }
 EOF
diff --git autoconf/jartest autoconf/jartest
index 2ba133ca..ec8469c0 100755
--- autoconf/jartest
+++ autoconf/jartest
@@ -61,9 +61,8 @@ fi
 #*    Test                                                             */
 #*---------------------------------------------------------------------*/
 cat > $file.txt <<EOF
-main( argc, argv )
-int   argc;
-char *argv[];
+#include <stdlib.h>
+int main( int argc, char *argv[] )
 {
    exit( 0 );
 }
diff --git autoconf/openssl-tls13 autoconf/openssl-tls13
index 0981d682..c3a781ea 100755
--- autoconf/openssl-tls13
+++ autoconf/openssl-tls13
@@ -68,6 +68,7 @@ cat > $file.c <<EOF
 #include <openssl/bio.h>
 
 static SSL_CTX *ctx;
+extern const SSL_METHOD *TLSv1_3_client_method(void);
 
 int main( int argc, char *argv[] ) {
     BIO *sbio;
diff --git autoconf/openssl-v2 autoconf/openssl-v2
index 5e065cc3..9dbaa243 100755
--- autoconf/openssl-v2
+++ autoconf/openssl-v2
@@ -68,6 +68,7 @@ cat > $file.c <<EOF
 #include <openssl/bio.h>
 
 static SSL_CTX *ctx;
+const SSL_METHOD *SSLv2_server_method(void);
 
 int main( int argc, char *argv[] ) {
     BIO *sbio;
diff --git autoconf/openssl-v3 autoconf/openssl-v3
index ab4a6a34..bb6f1678 100755
--- autoconf/openssl-v3
+++ autoconf/openssl-v3
@@ -68,6 +68,7 @@ cat > $file.c <<EOF
 #include <openssl/bio.h>
 
 static SSL_CTX *ctx;
+const SSL_METHOD *SSLv3_server_method(void);
 
 int main( int argc, char *argv[] ) {
     BIO *sbio;
diff --git autoconf/ptrsize autoconf/ptrsize
index da2ff8c2..06354f4b 100755
--- autoconf/ptrsize
+++ autoconf/ptrsize
@@ -50,7 +50,8 @@ fi
 #*    Test                                                             */
 #*---------------------------------------------------------------------*/
 cat > $file.c <<EOF
-int main () { printf( "%d\n", sizeof( int * ) ); }
+#include <stdio.h>
+int main () { printf( "%zu\n", sizeof( int * ) ); }
 EOF
 
 #*---------------------------------------------------------------------*/
diff --git autoconf/sendfile autoconf/sendfile
index 5ab5e0ca..11209262 100755
--- autoconf/sendfile
+++ autoconf/sendfile
@@ -104,9 +104,7 @@ cat > $file.c <<EOF
 #include <sys/socket.h>
 #include <sys/uio.h>
 
-main( argc, argv )
-int   argc;
-char *argv[];
+int main( int argc, char *argv[] )
 {
    char buffer [50];
    FILE *fd = fopen( "/etc/hosts", "r" );
diff --git autoconf/setsockopt autoconf/setsockopt
index 7c48286f..4cc152b1 100755
--- autoconf/setsockopt
+++ autoconf/setsockopt
@@ -77,7 +77,7 @@ cat > $file.c <<EOF
 #include <netinet/in.h>
 #include <netinet/tcp.h>
 
-main( int argc, char *argv[] ) {
+int main( int argc, char *argv[] ) {
    int s = socket( AF_INET, SOCK_STREAM, 0 );
    int sock_opt = 1;
 
diff --git autoconf/socket autoconf/socket
index 5bf55d71..8eb188aa 100755
--- autoconf/socket
+++ autoconf/socket
@@ -68,10 +68,12 @@ cat > $file.c <<EOF
 #ifdef _MINGW_VER
 #include <winsock2.h>
 #endif
+#include <stdio.h>
+extern int gethostbyname(const char *);
+extern int getsockname(long, long, long);
+extern int accept(long, long, long);
 
-main( argc, argv )
-int   argc;
-char *argv[];
+int main( int argc, char *argv[] )
 {
    printf( "%d\n", gethostbyname( "toto" ) );
    printf( "%8x\n", getsockname( 0L, 0L, 0L ) );
diff --git autoconf/socklen autoconf/socklen
index 775b11b5..bec90627 100755
--- autoconf/socklen
+++ autoconf/socklen
@@ -72,7 +72,7 @@ cat > $file.c <<EOF
 #include <winsock2.h>
 #endif
 
-main( int argc, char *argv[] ) {
+int main( int argc, char *argv[] ) {
    printf( "%d\n", (socklen_t)argc );
    return 0;
 }
diff --git autoconf/unixsocket autoconf/unixsocket
index 231dc5bf..973409c6 100755
--- autoconf/unixsocket
+++ autoconf/unixsocket
@@ -77,7 +77,7 @@ cat > $file.c <<EOF
 #include <stdlib.h>
 #include <string.h>
 
-main( int argc, char *argv[] ) {
+int main( int argc, char *argv[] ) {
    int s;
    struct sockaddr_un saddr;
 
@@ -85,6 +85,7 @@ main( int argc, char *argv[] ) {
 
    strcpy( saddr.sun_path, "/tmp/foo" );
    connect( s, (struct sockaddr *)&saddr, sizeof( saddr ) );
+   return 0;
 }
 EOF
 
diff --git autoconf/ziptest autoconf/ziptest
index 02cc1893..bd7af72d 100755
--- autoconf/ziptest
+++ autoconf/ziptest
@@ -61,9 +61,8 @@ fi
 #*    Test                                                             */
 #*---------------------------------------------------------------------*/
 cat > $file.txt <<EOF
-main( argc, argv )
-int   argc;
-char *argv[];
+#include <stdlib.h>
+int main( int argc, char *argv[] )
 {
    exit( 0 );
 }