[dpdk-dev] [PATCH v4 3/4] build: fix ninja install on FreeBSD

[Bruce Richardson <bruce.richardson@intel.com>]

The post-install script to symlink the PMDs from their own PMD directory to
the regular lib directory (so they would be found by ld at runtime) was
using the "-r" flag to ln to create relative symlinks. This flag is
unsupported by ln on FreeBSD causing the ninja install step to fail.

Reworking the script to take the relative driver path as parameter removes
the need for ln to calculate the relative path ensuring compatibility with
FreeBSD.

As part of the fix, we move the registration of the install script to the
config/meson.build file, from the top level one. This improves readability
as the script takes as parameters the variables set in that file.

Fixes: ed4d43d73e2b ("build: symlink drivers to library directory")

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>
---
 buildtools/symlink-drivers-solibs.sh | 7 ++++---
 config/meson.build                   | 7 +++++++
 meson.build                          | 7 -------
 3 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/buildtools/symlink-drivers-solibs.sh b/buildtools/symlink-drivers-solibs.sh
index 9826c6ae3..42985e855 100644
--- a/buildtools/symlink-drivers-solibs.sh
+++ b/buildtools/symlink-drivers-solibs.sh
@@ -7,6 +7,7 @@
 # others, e.g. PCI device PMDs depending on the PCI bus driver.
 
 # parameters to script are paths relative to install prefix:
-# 1. directory containing driver files e.g. lib64/dpdk/drivers
-# 2. directory for installed regular libs e.g. lib64
-ln -rsf ${DESTDIR}/${MESON_INSTALL_PREFIX}/$1/* ${DESTDIR}/${MESON_INSTALL_PREFIX}/$2
+# 1. directory for installed regular libs e.g. lib64
+# 2. subdirectory of libdir where the pmds are
+
+cd ${MESON_INSTALL_DESTDIR_PREFIX}/$1 && ln -sfv $2/librte_*.so* .
diff --git a/config/meson.build b/config/meson.build
index f8aded6ed..3678348de 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -42,6 +42,13 @@ endif
 driver_install_path = join_paths(get_option('libdir'), pmd_subdir_opt)
 eal_pmd_path = join_paths(get_option('prefix'), driver_install_path)
 
+# driver .so files often depend upon the bus drivers for their connect bus,
+# e.g. ixgbe depends on librte_bus_pci. This means that the bus drivers need
+# to be in the library path, so symlink the drivers from the main lib directory.
+meson.add_install_script('../buildtools/symlink-drivers-solibs.sh',
+		get_option('libdir'),
+		pmd_subdir_opt)
+
 # set the machine type and cflags for it
 if meson.is_cross_build()
 	machine = host_machine.cpu()
diff --git a/meson.build b/meson.build
index a96486597..d1e8e5239 100644
--- a/meson.build
+++ b/meson.build
@@ -63,13 +63,6 @@ configure_file(output: build_cfg,
 # them.
 dpdk_drivers = ['-Wl,--whole-archive'] + dpdk_drivers + ['-Wl,--no-whole-archive']
 
-# driver .so files often depend upon the bus drivers for their connect bus,
-# e.g. ixgbe depends on librte_bus_pci. This means that the bus drivers need
-# to be in the library path, so symlink the drivers from the main lib directory.
-meson.add_install_script('buildtools/symlink-drivers-solibs.sh',
-		driver_install_path,
-		get_option('libdir'))
-
 pkg = import('pkgconfig')
 pkg.generate(name: meson.project_name(),
 	filebase: 'lib' + meson.project_name().to_lower(),
-- 
2.20.1