I've got this error when compiling 3.6.3 on macOS. Blindly changing
strdupa -> strdup helped.
CC tlsproxy/tlsproxy.o
tlsproxy/tlsproxy.c:70:16: warning: implicit declaration of function 'strdupa'
is invalid in C99 [-Wimplicit-function-declaration]
char *addr = strdupa (addrport);
^
tlsproxy/tlsproxy.c:70:16: warning: this function declaration is not a
prototype [-Wstrict-prototypes]
tlsproxy/tlsproxy.c:70:9: warning: incompatible integer to pointer conversion
initializing 'char *' with an expression of type 'int'
[-Wint-conversion]
char *addr = strdupa (addrport);
^ ~~~~~~~~~~~~~~~~~~
tlsproxy/tlsproxy.c:72:9: warning: initializing 'char *' with an expression of
type 'const char *' discards qualifiers
[-Wincompatible-pointer-types-discards-qualifiers]
char *port = defaultport;
^ ~~~~~~~~~~~
tlsproxy/tlsproxy.c:137:16: warning: implicit declaration of function 'strdupa'
is invalid in C99 [-Wimplicit-function-declaration]
char *addr = strdupa (addrport);
^
tlsproxy/tlsproxy.c:137:9: warning: incompatible integer to pointer conversion
initializing 'char *' with an expression of type 'int'
[-Wint-conversion]
char *addr = strdupa (addrport);
^ ~~~~~~~~~~~~~~~~~~
tlsproxy/tlsproxy.c:139:9: warning: initializing 'char *' with an expression of
type 'const char *' discards qualifiers
[-Wincompatible-pointer-types-discards-qualifiers]
char *port = defaultport;
^ ~~~~~~~~~~~
tlsproxy/tlsproxy.c:327:11: warning: declaration shadows a variable in the
global scope [-Wshadow]
int optind = 0;
^
/usr/include/getopt.h:78:12: note: previous declaration is here
extern int optind, opterr, optopt;
^
8 warnings generated.
CCLD tlsproxy/tlsproxy
libtool: warning: '-no-install' is ignored for x86_64-apple-darwin17.6.0
libtool: warning: assuming '-no-fast-install' instead
ld: warning: text-based stub file
/System/Library/Frameworks//Security.framework/Security.tbd and library file
/System/Library/Frameworks//Security.framework/Security are out of sync.
Falling back to library file for linking.
Undefined symbols for architecture x86_64:
"_strdupa", referenced from:
_runlistener in tlsproxy.o
_runproxy in tlsproxy.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
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