[Intel-gfx] [PATCH i-g-t 3/3] configure.ac: Make gsl dependency and dependent code optional

[Paul Kocialkowski]

This adds automake instructions, with matching autoconf macros, to make
the dependency on gsl and the code that depends on it optional.

This should allow preserving the ability to build IGT on Android, where
gsl support may be lacking.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski at linux.intel.com>
---
 configure.ac         | 6 +++++-
 lib/Makefile.am      | 7 +++++++
 lib/Makefile.sources | 2 --
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 20e5cf96..de0e85dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -181,7 +181,8 @@ PKG_CHECK_MODULES(GLIB, [glib-2.0], [glib=yes], [glib=no])
 if test x"$glib" = xyes; then
 	AC_DEFINE(HAVE_GLIB,1,[Enable glib support])
 fi
-PKG_CHECK_MODULES(GSL, gsl)
+PKG_CHECK_MODULES(GSL, [gsl], [gsl=yes], [gsl=no])
+AM_CONDITIONAL(HAVE_GSL, [test "x$gsl" = xyes])
 
 # for chamelium
 AC_ARG_ENABLE(chamelium, AS_HELP_STRING([--disable-chamelium],
@@ -196,6 +197,9 @@ if test "x$enable_chamelium" = xyes; then
 	if test x"$glib" != xyes; then
 		AC_MSG_ERROR([Failed to find glib, required by chamelium. Use --disable-chamelium to disable chamelium support.])
 	fi
+	if test x"$gsl" != xyes; then
+		AC_MSG_ERROR([Failed to find gsl, required by chamelium. Use --disable-chamelium to disable chamelium support.])
+	fi
 	AC_DEFINE(HAVE_CHAMELIUM, 1, [Enable Chamelium support])
 fi
 
diff --git a/lib/Makefile.am b/lib/Makefile.am
index fb922ced..9b506f69 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -29,6 +29,13 @@ lib_source_list +=	 	\
 	$(NULL)
 endif
 
+if HAVE_GSL
+lib_source_list +=	 	\
+	igt_frame.c		\
+	igt_frame.h		\
+	$(NULL)
+endif
+
 AM_CPPFLAGS = -I$(top_srcdir)
 AM_CFLAGS = \
 	    $(CWARNFLAGS) \
diff --git a/lib/Makefile.sources b/lib/Makefile.sources
index c2e58809..53fdb54c 100644
--- a/lib/Makefile.sources
+++ b/lib/Makefile.sources
@@ -83,8 +83,6 @@ lib_source_list =	 	\
 	uwildmat/uwildmat.c	\
 	igt_kmod.c		\
 	igt_kmod.h		\
-	igt_frame.c		\
-	igt_frame.h		\
 	$(NULL)
 
 .PHONY: version.h.tmp
-- 
2.13.2