87 lines
2.1 KiB
Plaintext
87 lines
2.1 KiB
Plaintext
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# -*- Autoconf -*-
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# Process this file with autoconf to produce a configure script.
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AC_PREREQ([2.65])
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AC_INIT([metamath], [0.114], [nm.NOSPAM@alum.mit.edu])
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AC_CONFIG_SRCDIR([metamath.c])
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AC_CONFIG_HEADERS([config.h])
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AM_INIT_AUTOMAKE([foreign])
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AC_CONFIG_FILES([Makefile])
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# Checks for programs.
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AC_PROG_CC
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AC_PROG_INSTALL
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# Checks for libraries.
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# Checks for header files.
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AC_CHECK_HEADERS([limits.h stdlib.h string.h])
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AC_HEADER_STDBOOL
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# Checks for typedefs, structures, and compiler characteristics.
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AC_TYPE_SIZE_T
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# Checks for library functions.
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AC_FUNC_MALLOC
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AC_FUNC_REALLOC
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AC_CHECK_FUNCS([strchr strcspn strstr])
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# Enable gcc warning flags, but only if they seem to work
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new_CFLAGS="-Wall -Wextra"
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $new_CFLAGS"
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AC_MSG_CHECKING([[for gcc warning flags]])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <stdio.h>
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int f() {
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return 0;
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}
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]])],
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[AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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AM_CFLAGS="$AM_CFLAGS $new_CFLAGS"])
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# Try to optimize.
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AC_MSG_CHECKING([[for optimization flags]])
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new_CFLAGS="-O3 -funroll-loops -finline-functions -fomit-frame-pointer"
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $new_CFLAGS"
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# Remove any existing "-O2", or it will override what we're doing.
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CFLAGS=$( printf "%s" "$CFLAGS" | sed -e 's/ -O2/ /' )
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <stdio.h>
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int f() {
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return 0;
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}
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]])],
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[AC_MSG_RESULT([yes])
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CFLAGS="$saved_CFLAGS"
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CFLAGS=$( printf "%s" "$CFLAGS" | sed -e 's/ -O2/ /' )
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AM_CFLAGS="$AM_CFLAGS $new_CFLAGS"],
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[AC_MSG_RESULT([no])
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CFLAGS="$saved_CFLAGS"])
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# Can we use "inline"? We don't use AC_C _INLINE because metamath.c
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# does not include the autoconf-generated file.
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AC_MSG_CHECKING([[for 'inline' support]])
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new_CFLAGS="-DINLINE=inline"
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $new_CFLAGS"
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AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE([[
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inline int f(void) {}
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]])],
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[AC_MSG_RESULT([yes])
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AM_CFLAGS="$AM_CFLAGS $new_CFLAGS"],
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[AC_MSG_RESULT([no])])
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CFLAGS="$saved_CFLAGS"
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echo "CFLAGS=$CFLAGS"
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AC_SUBST([AM_CFLAGS])
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AC_SUBST([CFLAGS])
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AC_OUTPUT
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