build project on CentOS failed

[jijimao]

System (please complete the following information):

• OS: [centos 7.9]
• Kernel version (if applicable): [3.10.0-1160.el7.x86_64]
• strongSwan version(s): [5.9.3]
• Tested/confirmed with the latest version: [yes]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. ./autogen.sh
2. [root@localhost strongswan-gmalg-merge-5.9.3dr2]# ./configure --prefix=/opt/workspace/Ipsec/strongswan-gmalg-merge/release --enable-kernel-libipsec --enable-gmalg --with-gmalg_interior=yes
   configure: WARNING: unrecognized options: --enable-gmalg, --with-gmalg_interior
   checking for a BSD-compatible install... /usr/bin/install -c
   checking whether build environment is sane... yes
   checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
   checking for gawk... gawk
   checking whether make sets $(MAKE)... yes
   checking whether make supports nested variables... yes
   checking whether UID '0' is supported by ustar format... yes
   checking whether GID '0' is supported by ustar format... yes
   checking how to create a ustar tar archive... gnutar
   checking whether make supports nested variables... (cached) yes
   checking for pkg-config... /usr/bin/pkg-config
   checking pkg-config is at least version 0.9.0... yes
   checking for a sed that does not truncate output... /usr/bin/sed
   ./configure: line 4819: syntax error near unexpected token dbusdatadir,' ./configure: line 4819: PKG_CHECK_VAR(dbusdatadir, dbus-1, datadir, , dbusdatadir="${datarootdir}")'

I check that the dbus-1 lib is installed

why?

[tobiasbrunner]

When building from the repository (or also just to rebuild the configure script) you need the tools listed in HACKING (they have to be installed before running autogen.sh). One of them is pkg-config (might be called pkgconfig on CentOS), which provides the PKG_CHECK_VAR macro.

[neighbads]

PKG_CHECK_VAR is define in "pkgconfig-0.28"， it is 0.27 on CentOS, add define to /usr/share/aclocal/pkg.m4

dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
dnl -------------------------------------------
dnl Since: 0.28
dnl
dnl Retrieves the value of the pkg-config variable for the given module.
AC_DEFUN([PKG_CHECK_VAR],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl

_PKG_CONFIG([$1], [variable="][$3]["], [$2])
AS_VAR_COPY([$1], [pkg_cv_][$1])

AS_VAR_IF([$1], [""], [$5], [$4])dnl
])dnl PKG_CHECK_VAR

AC_LIB_PREFIX is define in /usr/share/aclocal/lib-prefix.m4 , is part of gettext-devel

yum install -y gettext-devel

Build on CentOS :

yum install -y automake m4 autoconf autoconf-archive pkgconfig libtool gperf gmp-devel bison gettext gettext-devel

# add PKG_CHECK_VAR to /usr/share/aclocal/pkg.m4

# autoreconf  with --force
autoreconf -i --force

./configure
make

[jijimao]

thanks，your answer is perfect, I'v compiled and used it!