ccache gcc -DHAVE_CONFIG_H -I. -I. -I../../..  -I./.. -I./../../include -I./../../libraries/libansi -I./../../libraries/libmisc -I./../../libraries/libisc-new/src -I./../../libraries/regex -I./../../libraries/libcommon   -g -O2 -Wall -W -Wbad-function-cast -Wcast-align -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -c `test -f 'testfd.c' || echo './'`testfd.c
testfd.c: In function `find_limits':
testfd.c:91: warning: implicit declaration of function `getdtablesize'
testfd.c:92: warning: implicit declaration of function `printf'
testfd.c:107: warning: implicit declaration of function `getrlimit'
testfd.c:109: warning: implicit declaration of function `fflush'
testfd.c:110: warning: implicit declaration of function `perror'
testfd.c: In function `main':
testfd.c:174: warning: implicit declaration of function `setrlimit'
testfd.c:190: warning: implicit declaration of function `fprintf'
ccache gcc  -g -O2 -Wall -W -Wbad-function-cast -Wcast-align -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -o testfd  testfd.o  -lresolv 
./testfd
pre-getdtablesize: 64
pre-OPEN_MAX: n/a
pre-getrlimit-current: 64
pre-getrlimit-max: 256
pre-sysconf: 64
pre-FD_SETSIZE: 256
pre-open: 64
post-getdtablesize: 32
post-OPEN_MAX: n/a
post-getrlimit-current: 32
post-getrlimit-max: 256
post-sysconf: 32
post-FD_SETSIZE: 256
post-open: 32