717e821b99
As is normal for autoconf-based projects.
For example, it is a common use case to do
./configure CXXFLAGS=-O0
This did not work for nix until now, because the `CXXFLAGS=` declaration
would unconditionally erase what the user had specified.
The custom `OPTIMIZE` flag is removed, but the default `-O3` is retained;
autoconf would default to `-g -O2` by default otherwise as documented on:
https://www.gnu.org/software/autoconf/manual/autoconf-2.60/html_node/C-Compiler.html
https://www.gnu.org/software/autoconf/manual/autoconf-2.60/html_node/C_002b_002b-Compiler.html
102 lines
3.2 KiB
Plaintext
102 lines
3.2 KiB
Plaintext
AC_INIT(nix-perl, m4_esyscmd([bash -c "echo -n $(cat ../.version)$VERSION_SUFFIX"]))
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AC_CONFIG_SRCDIR(MANIFEST)
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AC_CONFIG_AUX_DIR(../config)
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# Set default flags for nix (as per AC_PROG_CC/CXX docs),
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# while still allowing the user to override them from the command line.
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: ${CFLAGS="-O3"}
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: ${CXXFLAGS="-O3"}
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AC_PROG_CC
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AC_PROG_CXX
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AX_CXX_COMPILE_STDCXX_11
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# Use 64-bit file system calls so that we can support files > 2 GiB.
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AC_SYS_LARGEFILE
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AC_DEFUN([NEED_PROG],
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[
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AC_PATH_PROG($1, $2)
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if test -z "$$1"; then
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AC_MSG_ERROR([$2 is required])
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fi
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])
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NEED_PROG(perl, perl)
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NEED_PROG(curl, curl)
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NEED_PROG(bzip2, bzip2)
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NEED_PROG(xz, xz)
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# Test that Perl has the open/fork feature (Perl 5.8.0 and beyond).
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AC_MSG_CHECKING([whether Perl is recent enough])
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if ! $perl -e 'open(FOO, "-|", "true"); while (<FOO>) { print; }; close FOO or die;'; then
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([Your Perl version is too old. Nix requires Perl 5.8.0 or newer.])
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fi
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AC_MSG_RESULT(yes)
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# Figure out where to install Perl modules.
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AC_MSG_CHECKING([for the Perl installation prefix])
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perlversion=$($perl -e 'use Config; print $Config{version};')
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perlarchname=$($perl -e 'use Config; print $Config{archname};')
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AC_SUBST(perllibdir, [${libdir}/perl5/site_perl/$perlversion/$perlarchname])
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AC_MSG_RESULT($perllibdir)
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# Look for libsodium, an optional dependency.
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PKG_CHECK_MODULES([SODIUM], [libsodium],
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[AC_DEFINE([HAVE_SODIUM], [1], [Whether to use libsodium for cryptography.])
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CXXFLAGS="$SODIUM_CFLAGS $CXXFLAGS"
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have_sodium=1], [have_sodium=])
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AC_SUBST(HAVE_SODIUM, [$have_sodium])
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# Check for the required Perl dependencies (DBI and DBD::SQLite).
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perlFlags="-I$perllibdir"
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AC_ARG_WITH(dbi, AC_HELP_STRING([--with-dbi=PATH],
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[prefix of the Perl DBI library]),
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perlFlags="$perlFlags -I$withval")
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AC_ARG_WITH(dbd-sqlite, AC_HELP_STRING([--with-dbd-sqlite=PATH],
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[prefix of the Perl DBD::SQLite library]),
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perlFlags="$perlFlags -I$withval")
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AC_MSG_CHECKING([whether DBD::SQLite works])
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if ! $perl $perlFlags -e 'use DBI; use DBD::SQLite;' 2>&5; then
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AC_MSG_RESULT(no)
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AC_MSG_FAILURE([The Perl modules DBI and/or DBD::SQLite are missing.])
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fi
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AC_MSG_RESULT(yes)
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AC_SUBST(perlFlags)
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PKG_CHECK_MODULES([NIX], [nix-store])
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NEED_PROG([NIX_INSTANTIATE_PROGRAM], [nix-instantiate])
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# Get nix configure values
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nixbindir=$("$NIX_INSTANTIATE_PROGRAM" --eval '<nix/config.nix>' -A nixBinDir | tr -d \")
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nixlibexecdir=$("$NIX_INSTANTIATE_PROGRAM" --eval '<nix/config.nix>' -A nixLibexecDir | tr -d \")
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nixlocalstatedir=$("$NIX_INSTANTIATE_PROGRAM" --eval '<nix/config.nix>' -A nixLocalstateDir | tr -d \")
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nixsysconfdir=$("$NIX_INSTANTIATE_PROGRAM" --eval '<nix/config.nix>' -A nixSysconfDir | tr -d \")
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nixstoredir=$("$NIX_INSTANTIATE_PROGRAM" --eval '<nix/config.nix>' -A nixStoreDir | tr -d \")
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AC_SUBST(nixbindir)
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AC_SUBST(nixlibexecdir)
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AC_SUBST(nixlocalstatedir)
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AC_SUBST(nixsysconfdir)
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AC_SUBST(nixstoredir)
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# Expand all variables in config.status.
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test "$prefix" = NONE && prefix=$ac_default_prefix
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test "$exec_prefix" = NONE && exec_prefix='${prefix}'
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for name in $ac_subst_vars; do
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declare $name="$(eval echo "${!name}")"
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declare $name="$(eval echo "${!name}")"
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declare $name="$(eval echo "${!name}")"
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done
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rm -f Makefile.config
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ln -sfn ../mk mk
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AC_CONFIG_FILES([])
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AC_OUTPUT
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