Commit 2b3e0ef6c095cf6ea920e95fc9826dc39694162a
2018-05-04T12:55:48
Support symbol visibility features of Sun / Oracle C compilers. Reported by Kiyoshi Kanazawa: https://lists.gnu.org/archive/html/freetype-devel/2018-05/msg00008.html Thanks to the suggestions by Alexei and Alan Coopersmith. * builds/unix/configure.raw: Check if "-xldscope=hidden" is accepted, and if so, it is added to CFLAGS. This is the option making Sun / Oracle C compilers hide the symbols from global scope. * include/freetype/config/ftconfig.h: Use "__global" prefix for FT_EXPORT() macro, if SunPro C is newer than Sun ONE Studio 8 (2003). * builds/unix/ftconfig.in: Ditto. * builds/vms/ftconfig.h: Ditto.
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diff --git a/ChangeLog b/ChangeLog
index 9fb0711..3401f91 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,20 @@
+2018-05-04 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
+
+ Support symbol visibility features of Sun / Oracle C compilers.
+ Reported by Kiyoshi Kanazawa:
+ https://lists.gnu.org/archive/html/freetype-devel/2018-05/msg00008.html
+ Thanks to the suggestions by Alexei and Alan Coopersmith.
+
+ * builds/unix/configure.raw: Check if "-xldscope=hidden" is
+ accepted, and if so, it is added to CFLAGS. This is the option
+ making Sun / Oracle C compilers hide the symbols from global
+ scope.
+ * include/freetype/config/ftconfig.h: Use "__global" prefix
+ for FT_EXPORT() macro, if SunPro C is newer than Sun ONE
+ Studio 8 (2003).
+ * builds/unix/ftconfig.in: Ditto.
+ * builds/vms/ftconfig.h: Ditto.
+
2018-05-02 Nikolaus Waxweiler <madigens@gmail.com>
Unbreak CMake Windows installation
diff --git a/builds/unix/configure.raw b/builds/unix/configure.raw
index baab79d..8eded34 100644
--- a/builds/unix/configure.raw
+++ b/builds/unix/configure.raw
@@ -311,6 +311,14 @@ AC_SUBST([XX_ANSIFLAGS])
# It is recommended that shared libraries hide symbols except those with
# explicit __attribute__((visibility("default"))).
#
+AC_MSG_CHECKING([for -xldscope=hidden compiler flag])
+orig_CFLAGS="${CFLAGS}"
+CFLAGS="${CFLAGS} -xldscope=hidden"
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
+ AC_MSG_RESULT(yes),
+ CFLAGS="${orig_CFLAGS}"
+ AC_MSG_RESULT(no))
+
AC_MSG_CHECKING([for -fvisibility=hidden compiler flag])
orig_CFLAGS="${CFLAGS}"
CFLAGS="${CFLAGS} -fvisibility=hidden"
diff --git a/builds/unix/ftconfig.in b/builds/unix/ftconfig.in
index b9c21da..dc4aff7 100644
--- a/builds/unix/ftconfig.in
+++ b/builds/unix/ftconfig.in
@@ -493,6 +493,8 @@ FT_BEGIN_HEADER
#define FT_EXPORT( x ) __declspec( dllexport ) x
#elif defined( __GNUC__ ) && __GNUC__ >= 4
#define FT_EXPORT( x ) __attribute__(( visibility( "default" ) )) x
+#elif defined( __SUNPRO_C ) && __SUNPRO_C >= 0x550
+#define FT_EXPORT( x ) __global x
#elif defined( __cplusplus )
#define FT_EXPORT( x ) extern "C" x
#else
diff --git a/builds/vms/ftconfig.h b/builds/vms/ftconfig.h
index 021e2c6..77bca54 100644
--- a/builds/vms/ftconfig.h
+++ b/builds/vms/ftconfig.h
@@ -445,6 +445,8 @@ FT_BEGIN_HEADER
#define FT_EXPORT( x ) __declspec( dllexport ) x
#elif defined( __GNUC__ ) && __GNUC__ >= 4
#define FT_EXPORT( x ) __attribute__(( visibility( "default" ) )) x
+#elif defined( __SUNPRO_C ) && __SUNPRO_C >= 0x550
+#define FT_EXPORT( x ) __global x
#elif defined( __cplusplus )
#define FT_EXPORT( x ) extern "C" x
#else
diff --git a/include/freetype/config/ftconfig.h b/include/freetype/config/ftconfig.h
index eedebf4..52c5e33 100644
--- a/include/freetype/config/ftconfig.h
+++ b/include/freetype/config/ftconfig.h
@@ -461,6 +461,8 @@ FT_BEGIN_HEADER
#define FT_EXPORT( x ) __declspec( dllexport ) x
#elif defined( __GNUC__ ) && __GNUC__ >= 4
#define FT_EXPORT( x ) __attribute__(( visibility( "default" ) )) x
+#elif defined( __SUNPRO_C ) && __SUNPRO_C >= 0x550
+#define FT_EXPORT( x ) __global x
#elif defined( __cplusplus )
#define FT_EXPORT( x ) extern "C" x
#else