120 lines
2.5 KiB
Plaintext
120 lines
2.5 KiB
Plaintext
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#!/bin/sh
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#
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# The shell script for bc to automatically create the config.h file.
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#
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# Syntax: configure [ include-dir [ lib-file [ c-compiler ]]]
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#
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# Set some standard things.
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#
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INCLUDE=${1-/usr/include}
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LIBFILE=${2-libmath.b}
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CC=${3-cc}
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#
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# Initialize the exit status
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#
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EXIT=0
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#
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# Remove the current copy and make sure there is at least an empty file
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#
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rm -f config.h
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echo "/* config.h */" > config.h
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#
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# Check for the argument passing mechanism.
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#
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if test -r $INCLUDE/varargs.h
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then
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echo "Using varargs.h for variable arguments (non ansi compilers). "
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echo "#ifndef __STDC__" >> config.h
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echo "#define VARARGS" >> config.h
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echo "#endif" >> config.h
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else
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if test -r $INCLUDE/stdarg.h
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then
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echo "Using stdarg.h for variable arguments. "
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else
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echo "Unknown variable argument mechanism. "
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EXIT=1
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fi
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fi
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#
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# Limits file?
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#
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if test -r $INCLUDE/limits.h
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then
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echo "You have a limits.h file."
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else
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echo "You need to check the limits in const.h."
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echo "#define NO_LIMITS" >> config.h
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fi
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#
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# unistd?
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#
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if test -r $INCLUDE/unistd.h
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then
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echo "You have a unistd.h file."
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else
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echo "#define NO_UNISTD" >> config.h
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fi
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#
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# Stdlib?
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#
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if test -r $INCLUDE/stdlib.h
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then
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echo "You have a stdlib.h file."
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else
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echo "#define NO_STDLIB" >> config.h
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fi
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#
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# Strinog?
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#
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if test -r $INCLUDE/string.h
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then
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echo "You have a string.h file."
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else
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echo "#define STRINGS_H" >> config.h
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fi
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#
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# At least one BSD system did not define "extern int errno;" in errno.h
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#
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if grep -s extern $INCLUDE/errno.h
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then
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true
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else
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echo "extern int errno;" >> config.h
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fi
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#
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# On MINIX pc systems we want to define some extra files.
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#
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if test -r $INCLUDE/minix
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then
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# We must be on a minix system. Check for the machine type.
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if test `machine` = IBM_PC
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then
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echo "#define SMALL_BUF" >> config.h
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echo "#define BC_MATH_FILE \"$LIBFILE\"" >> config.h
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echo "#define SHORTNAMES" >> config.h
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else
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echo "Your Minix is not on a PC. The bc library will be loaded in the"
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echo "executable file. You will not have to install a library file."
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fi
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else
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# Test to see if the compiler will compile long strings...
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echo "char libmath[] =" > JUNK.c
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echo "#include \"math.h\"" >> JUNK.c
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echo ";" >> JUNK.c
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if $CC -c JUNK.c >/dev/null 2>&1
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then
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echo "The bc library will be loaded in the executable file. You will"
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echo "not have to install a library file."
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else
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echo "Your C compiler does not like long strings. You will have to"
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echo "load the math library from a file."
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echo "#define BC_MATH_FILE \"$LIBFILE\"" >> config.h
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fi
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rm -f JUNK.c JUNK.o
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fi
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#
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# exit
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#
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exit $EXIT
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