From: norry AT tky0 DOT attnet DOT or DOT jp (Norirhiro Ogata) Subject: lgamma() and -lm bug in b18, b19 8 Mar 1998 15:39:10 -0800 Message-ID: <3502EF88.924C73EF.cygnus.gnu-win32@tky0.attnet.or.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-2022-jp Content-Transfer-Encoding: 7bit To: gnu-win32 AT cygnus DOT com Something is wrong on using flag "-lm" for linking about function "lgamma()" of "math.h". For example, I tried to comple the following test file: #include main() { double a=1.0,x; x = lgamma(a); printf("%lf \n",x); } In b18, it failed as follows: bash$ gcc -O gamma_test.c -lm C:\gnuwin32\H-i386-cygwin32\lib\gcc-lib\i386-cygwin32\cygnus-2.7.2-970404\../../ .../../i386-cygwin32\lib/libm.a(w_lgamma.o)(.text+0x7):w_lgamma.c: undefined refe rence to `signgam' gcc: Internal compiler error: program ld got fatal signal 1 Also in b19, it failed as follows: BASH.EXE-2.01$ gcc -O gamma_test.c -lm C:\CYGNUS\B19\H-I386~1\lib\gcc-lib\i386-cygwin32\2.7-B19\../../../../i386-cygwin 32\lib/libm.a(w_lgamma.o)(.text+0x7):w_lgamma.c: undefined reference to `signgam' On the other hand, this test file could be complied in Linux. Furthermore, the following error can be observed in compiling another file using flag "-lm": C:\CYGNUS\B19\H-I386~1\lib\gcc-lib\i386-cygwin32\2.7-B19\../../../../i386-cygwin 32\lib/libcygwin.a(libcmain.o)(.text+0x58):libcmain.cc: undefined reference to ` WinMain AT 16' Please tell me what can I do for solving these problems. Norihiro Ogata - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request AT cygnus DOT com" with one line of text: "help".