Hi Guys, I have compiled eventlog-0.2.12 and glib-2.12.12 in /opt/syslog/eventlog and /opt/syslog/glib directories. now when I try to compile syslog-ng with following options in configure ./configure --prefix=/opt/syslog/syslog-ng --enable-ipv6 EVTLOG_LIBS=/opt/syslog/eventlog/lib EVTLOG_CFLAGS=/opt/syslog/eventlog/include GLIB_CFLAGS=/opt/syslog/glib/include GLIB_LIBS=/opt/syslog/glib/lib PKG_CONFIG_PATH=/opt/syslog/glib/lib/pkgconfig I see this error checking for GLIB... yes checking sanity checking Glib headers... no configure: error: Glib headers inconsistent with current compiler setting. You might be using 32 bit Glib with a 64 bit compiler, check PKG_CONFIG_PATH here is the errors o/p from config.log bash-3.00# grep -i error config.log /usr/include/stdbool.h:42:2: #error "Use of <stdbool.h> is valid only in a c99 compilation environment." conftest.c:59: error: syntax error before "text" conftest.c:64: error: 'for' loop initial declaration used outside C99 mode conftest.c:64: error: `text' undeclared (first use in this function) conftest.c:64: error: (Each undeclared identifier is reported only once conftest.c:64: error: for each function it appears in.) conftest.c:108: error: `false' undeclared (first use in this function) conftest.c:112: error: `true' undeclared (first use in this function) conftest.c:113: error: syntax error before "newvar" conftest.c:123: error: 'for' loop initial declaration used outside C99 mode conftest.c:139: error: `newvar' undeclared (first use in this function) ld: fatal: Symbol referencing errors. No output written to conftest | static void yy_fatal_error YY_PROTO(( yyconst char msg[] )); | if ( c == EOF && ferror( yyin ) ) \ | YY_FATAL_ERROR( "input in flex scanner failed" ); \ | && ferror( yyin ) ) \ | YY_FATAL_ERROR( "input in flex scanner failed" ); | /* Report a fatal error. */ | #ifndef YY_FATAL_ERROR | #define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) | YY_FATAL_ERROR( | "fatal flex scanner internal error--no action found" ); | YY_FATAL_ERROR( | "fatal flex scanner internal error--end of buffer missed" ); | YY_FATAL_ERROR( | YY_FATAL_ERROR( | "fatal error - scanner input buffer overflow" ); | YY_FATAL_ERROR( "flex scanner push-back overflow" ); | YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); | YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); | YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); | YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); | YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); | YY_FATAL_ERROR( | YY_FATAL_ERROR( "start-condition stack underflow" ); | static void yy_fatal_error( yyconst char msg[] ) | static void yy_fatal_error( msg ) ld: fatal: Symbol referencing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. ld: fatal: File processing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. configure:12119: gcc -std=gnu99 -c -g -O2 -Wall -pedantic -Werror -Wno-pointer-sign conftest.c >&5 cc1: error: unrecognized command line option "-Wno-pointer-sign" cc1: error: unrecognized command line option "-Wno-pointer-sign" conftest.c:30: error: size of array `off_t_is_large' is negative conftest.c:41: error: structure has no member named `tm_gmtoff' conftest.c:41: error: structure has no member named `tm_gmtoff' ld: fatal: File processing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. ld: fatal: File processing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. ld: fatal: Symbol referencing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. ld: fatal: Symbol referencing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. ld: fatal: Symbol referencing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. ld: fatal: Symbol referencing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. ld: fatal: Symbol referencing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. configure:13336: $PKG_CONFIG --exists --print-errors "dbi >= $LIBDBI_MIN_VERSION" configure:13352: $PKG_CONFIG --exists --print-errors "dbi >= $LIBDBI_MIN_VERSION" ld: fatal: File processing errors. No output written to conftest | /* Override any GCC internal prototype to avoid an error. conftest.c:46: error: `GLIB_SIZEOF_LONG' undeclared (first use in this function) conftest.c:46: error: (Each undeclared identifier is reported only once conftest.c:46: error: for each function it appears in.) configure:13605: error: Glib headers inconsistent with current compiler setting. You might be using 32 bit Glib with a 64 bit compiler, check PKG_CONFIG_PATH bash-3.00# help me !! Regards, -Manish