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errors_resolver_demo.log
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errors_resolver_demo.log
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Initial invironment
CC='gcc'
pass 1: resolve headers paths
errors_resolver_sample.c:9:19: fatal error: empty.h: No such file or directory
Fix:
CPATH+=":sub";
pass 2: resolve headers
errors_resolver_sample.c:14:17: error: storage size of ‘he’ isn’t known
errors_resolver_sample.c:16:9: error: variable ‘resbuf’ has initializer but incomplete type
errors_resolver_sample.c:16:9: warning: excess elements in struct initializer [enabled by default]
errors_resolver_sample.c:16:9: warning: (near initialization for ‘resbuf’) [enabled by default]
errors_resolver_sample.c:16:17: error: storage size of ‘resbuf’ isn’t known
errors_resolver_sample.c:19:2: warning: implicit declaration of function ‘gethostbyname_r’ [-Wimplicit-function-declaration]
errors_resolver_sample.c:21:41: error: dereferencing pointer to incomplete type
errors_resolver_sample.c:22:3: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration]
errors_resolver_sample.c:22:3: warning: incompatible implicit declaration of built-in function ‘printf’ [enabled by default]
errors_resolver_sample.c:24:2: warning: implicit declaration of function ‘sub’ [-Wimplicit-function-declaration]
errors_resolver_sample.c:24:6: error: ‘NULL’ undeclared (first use in this function)
errors_resolver_sample.c:25:2: warning: implicit declaration of function ‘sub2’ [-Wimplicit-function-declaration]
errors_resolver_sample.c:26:2: error: unknown type name ‘pthread_t’
errors_resolver_sample.c:27:2: warning: implicit declaration of function ‘pthread_create’ [-Wimplicit-function-declaration]
errors_resolver_sample.c:28:2: warning: implicit declaration of function ‘exit’ [-Wimplicit-function-declaration]
errors_resolver_sample.c:28:2: warning: incompatible implicit declaration of built-in function ‘exit’ [enabled by default]
errors_resolver_sample.c:28:7: error: ‘EXIT_SUCCESS’ undeclared (first use in this function)
errors_resolver_sample.c:16:17: warning: unused variable ‘resbuf’ [-Wunused-variable]
errors_resolver_sample.c:14:17: warning: unused variable ‘he’ [-Wunused-variable]
errors_resolver_sample.c:29:1: warning: control reaches end of non-void function [-Wreturn-type]
Fix:
CPPFLAGS+=' -include netdb.h';
CPPFLAGS+=' -include stdio.h';
CPPFLAGS+=' -include sub.h';
CPPFLAGS+=' -include libio.h';
CPPFLAGS+=' -include sub2.h';
# unresolved pthread_t
CPPFLAGS+=' -include pthread.h';
CPPFLAGS+=' -include stdlib.h';
pass 3: resolve libraries
errors_resolver_sample.c:(.text+0x106): undefined reference to `sub'
errors_resolver_sample.c:(.text+0x110): undefined reference to `sub2'
errors_resolver_sample.c:(.text+0x121): undefined reference to `sub'
errors_resolver_sample.c:(.text+0x12e): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
Fix:
LDLIBS+=' -l sub';
LDLIBS+=' sub/sub2.c';
LDLIBS+=' -l pthread';
pass 3: resolve library paths
/usr/bin/ld: cannot find -lsub
collect2: error: ld returned 1 exit status
Fix:
LDFLAGS+=' -L sub';
LD_LIBRARY_PATH+=':sub';
Final compilation:
cc -Wall -include netdb.h -include stdio.h -include sub.h -include libio.h -include sub2.h -include pthread.h -include stdlib.h -L sub errors_resolver_sample.c -l sub sub/sub2.c -l pthread -o errors_resolver_sample
Test run:
addr=127.0.0.1
Final result:
CPATH=':sub' CPPFLAGS='-Wall -include netdb.h -include stdio.h -include sub.h -include libio.h -include sub2.h -include pthread.h -include stdlib.h' LDFLAGS='-L sub' LDLIBS='-l sub sub/sub2.c -l pthread' make -B errors_resolver_sample
LD_LIBRARY_PATH=':sub' ./errors_resolver_sample