Index: configure.ac =================================================================== --- configure.ac.orig +++ configure.ac @@ -97,6 +97,45 @@ AM_CONDITIONAL(BUILD_PYTHON,[test "$buil dnl Handle local dict compiling properly AC_SUBST(CROSS_COMPILING, $cross_compiling) +dnl ************************************************************ +dnl Enable hiding of internal symbols in library to reduce its size and +dnl speed dynamic linking of applications. This currently is only supported +dnl on gcc >= 4.0 and SunPro C. +dnl +AC_MSG_CHECKING([whether to enable hidden symbols in the library]) +AC_ARG_ENABLE(hidden-symbols, +AC_HELP_STRING([--enable-hidden-symbols],[Hide internal symbols in library]) +AC_HELP_STRING([--disable-hidden-symbols],[Leave all symbols with default visibility in library]), +[ case "$enableval" in + no) + AC_MSG_RESULT(no) + ;; + *) + AC_MSG_CHECKING([whether $CC supports it]) + if test "$GCC" = yes ; then + if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then + AC_MSG_RESULT(yes) + AC_DEFINE(CRACKLIB_API, [extern __attribute__ ((visibility ("default")))], [to make a symbol visible]) + CFLAGS="$CFLAGS -fvisibility=hidden" + else + AC_MSG_RESULT(no) + fi ++ + else + dnl Test for SunPro cc + if $CC 2>&1 | grep flags >/dev/null && $CC -flags | grep xldscope= >/dev/null ; then + AC_MSG_RESULT(yes) + AC_DEFINE(CRACKLIB_API, [__global], [to make a symbol visible]) + CFLAGS="$CFLAGS -xldscope=hidden" + else + AC_MSG_RESULT(no) + fi + fi + ;; + esac ], + AC_MSG_RESULT(no) +) + AC_CONFIG_FILES([util/Makefile lib/Makefile doc/Makefile python/Makefile Makefile \ python/setup.py \ po/Makefile.in m4/Makefile dicts/Makefile cracklib.spec]) Index: lib/crack.h =================================================================== --- lib/crack.h.orig +++ lib/crack.h @@ -5,6 +5,10 @@ extern "C" { #endif +#ifndef CRACKLIB_API +#define CRACKLIB_API extern +#endif + /* Pass these functions a password (pw) and a path to the * dictionaries (/usr/lib/cracklib_dict should be specified) * and it will either return a NULL string, meaning that the @@ -18,13 +22,13 @@ extern "C" { * You must link with -lcrack */ -extern const char *FascistCheck(const char *pw, const char *dictpath); -extern const char *FascistCheckUser(const char *pw, const char *dictpath, +CRACKLIB_API const char *FascistCheck(const char *pw, const char *dictpath); +CRACKLIB_API const char *FascistCheckUser(const char *pw, const char *dictpath, const char *user, const char *gecos); /* This function returns the compiled in value for DEFAULT_CRACKLIB_DICT. */ -extern const char *GetDefaultCracklibDict(void); +CRACKLIB_API const char *GetDefaultCracklibDict(void); #ifdef __cplusplus }; Index: lib/packer.h =================================================================== --- lib/packer.h.orig +++ lib/packer.h @@ -66,7 +66,7 @@ typedef struct #define PIH_MAGIC 0x70775631 /* Internal routines */ -extern char *GetPW(PWDICT *pwp, uint32_t number); +CRACKLIB_API char *GetPW(PWDICT *pwp, uint32_t number); #else @@ -77,15 +77,15 @@ typedef struct { #endif -extern PWDICT *PWOpen(const char *prefix, char *mode); -extern int PWClose(PWDICT *pwp); -extern unsigned int FindPW(PWDICT *pwp, char *string); -extern int PutPW(PWDICT *pwp, char *string); -extern int PMatch(char *control, char *string); -extern char *Mangle(char *input, char *control); -extern char Chop(char *string); -extern char *Trim(char *string); -extern char *FascistLook(PWDICT *pwp, char *instring); +CRACKLIB_API PWDICT *PWOpen(const char *prefix, char *mode); +CRACKLIB_API int PWClose(PWDICT *pwp); +CRACKLIB_API unsigned int FindPW(PWDICT *pwp, char *string); +CRACKLIB_API int PutPW(PWDICT *pwp, char *string); +CRACKLIB_API int PMatch(char *control, char *string); +CRACKLIB_API char *Mangle(char *input, char *control); +CRACKLIB_API char Chop(char *string); +CRACKLIB_API char *Trim(char *string); +CRACKLIB_API char *FascistLook(PWDICT *pwp, char *instring); extern char *FascistLookUser(PWDICT *pwp, char *instring, const char *user, const char *gecos); extern char *FascistGecos(char *password, int uid); extern char *FascistGecosUser(char *password, const char *user, const char *gecos);