2021-02-10 19:18:08 +00:00
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dnl Process this file with autoconf to produce a configure script.
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dnl This configure.ac is only for building a standalone argp library.
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AC_PREREQ(2.54)
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AC_INIT(argp-ba.c)
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2021-02-10 19:18:23 +00:00
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AM_INIT_AUTOMAKE(argp, standalone-1.3)
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2021-02-10 19:18:08 +00:00
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AM_CONFIG_HEADER(config.h)
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# GNU libc defaults to supplying the ISO C library functions only. The
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# _GNU_SOURCE define enables these extensions, in particular we want
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# errno.h to declare program_invocation_name. Enable it on all
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# systems; no problems have been reported with it so far.
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AC_GNU_SOURCE
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# Checks for programs.
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AC_PROG_CC
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AC_PROG_MAKE_SET
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AC_PROG_RANLIB
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AM_PROG_CC_STDC
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if test "x$am_cv_prog_cc_stdc" = xno ; then
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AC_ERROR([the C compiler doesn't handle ANSI-C])
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fi
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# Checks for libraries.
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# Checks for header files.
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AC_HEADER_STDC
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AC_CHECK_HEADERS(limits.h malloc.h unistd.h)
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# Checks for typedefs, structures, and compiler characteristics.
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AC_C_CONST
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AC_C_INLINE
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AC_TYPE_SIZE_T
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LSH_GCC_ATTRIBUTES
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# Checks for library functions.
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AC_FUNC_ALLOCA
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AC_FUNC_VPRINTF
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AC_CHECK_FUNCS(strerror)
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AC_REPLACE_FUNCS(mempcpy strndup strchrnul)
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dnl ARGP_CHECK_FUNC(includes, function-call [, if-found [, if-not-found]])
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AC_DEFUN([ARGP_CHECK_FUNC],
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[AS_VAR_PUSHDEF([ac_func], m4_substr([$2], 0, m4_index([$2], [(])))
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AS_VAR_PUSHDEF([ac_var], [ac_cv_func_call_]ac_func)
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AH_TEMPLATE(AS_TR_CPP(HAVE_[]ac_func),
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[Define to 1 if you have the `]ac_func[' function.])
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AC_CACHE_CHECK([for $2], ac_var,
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[AC_TRY_LINK([$1], [$2],
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[AS_VAR_SET(ac_var, yes)],
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[AS_VAR_SET(ac_var, no)])])
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if test AS_VAR_GET(ac_var) = yes ; then
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ifelse([$3],,
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[AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_[]ac_func))],
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[$3
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])
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else
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ifelse([$4],, true, [$4])
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fi
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AS_VAR_POPDEF([ac_var])
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AS_VAR_POPDEF([ac_func])
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])
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# At least on freebsd, putc_unlocked is a macro, so the standard
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# AC_CHECK_FUNCS doesn't work well.
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ARGP_CHECK_FUNC([#include <stdio.h>], [putc_unlocked('x', stdout)])
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AC_CHECK_FUNCS(flockfile)
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AC_CHECK_FUNCS(fputs_unlocked fwrite_unlocked)
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# Used only by argp-test.c, so don't use AC_REPLACE_FUNCS.
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AC_CHECK_FUNCS(strdup asprintf)
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AC_CHECK_DECLS([program_invocation_name, program_invocation_short_name],
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[], [], [[#include <errno.h>]])
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# Set these flags *last*, or else the test programs won't compile
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if test x$GCC = xyes ; then
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# Using -ggdb3 makes (some versions of) Redhat's gcc-2.96 dump core
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if "$CC" --version | grep '^2\.96$' 1>/dev/null 2>&1; then
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true
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else
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CFLAGS="$CFLAGS -ggdb3"
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fi
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CFLAGS="$CFLAGS -Wall -W \
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-Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
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-Waggregate-return \
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-Wpointer-arith -Wbad-function-cast -Wnested-externs"
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fi
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CPPFLAGS="$CPPFLAGS -I$srcdir"
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AC_OUTPUT(Makefile testsuite/Makefile)
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