xplot/configure.in at master · unaiur/xplot · GitHub

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dnl Process this file with autoconf to produce a configure script.
AC_INIT(xplot.c)
AC_CONFIG_HEADER(config.h)

dnl Checks for programs.
AC_PROG_CC
if test $ac_cv_prog_gcc = yes; then
  CFLAGS="$CFLAGS -Wall"
fi

AC_PROG_INSTALL

dnl Find X11, and add the include/libs to the c/ld flags
dnl This must be done BEFORE checking for the X libraries
AC_PATH_XTRA
LIBS="$LIBS $X_LIBS"
CFLAGS="$CFLAGS $X_CFLAGS"

dnl Checks for libraries.
dnl Replace `main' with a function in -lX11:
AC_CHECK_LIB(X11, main)
dnl Replace `main' with a function in -lm:
AC_CHECK_LIB(m, main)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
AC_HEADER_STDC
AC_HEADER_TIME

AC_STRUCT_TM
AC_TM_GMTOFF

dnl Checks for library functions.

AC_OUTPUT(Makefile)