Add compiler.m4 and linker.m4 (MIT licensed, from libfshare) and use them for optionally disabling optimization, optionally enabling coverage, and version script detection

20071212165433-53eee-04e80f525f39a7ac82cd9f4d151dc363d5fae072.gz

3 files changed, 143 insertions, 1 deletions

diff --git a/m4/Makefile.am b/m4/Makefile.am
index 08aa0a1f3..a2a68e9f1 100644
--- a/m4/Makefile.am
+++ b/m4/Makefile.am
@@ -1,4 +1,6 @@
 EXTRA_DIST = \
 as-compiler-flag.m4 \
 as-ac-expand.m4 \
-gtk-doc.m4
+compiler.m4 \
+gtk-doc.m4 \
+linker.m4
diff --git a/m4/compiler.m4 b/m4/compiler.m4
new file mode 100644
index 000000000..5aff5d819
--- /dev/null
+++ b/m4/compiler.m4
@@ -0,0 +1,67 @@
+# compiler.m4 - autoconf macros for compiler settings
+#
+# Copyright © 2005 Scott James Remnant <scott@netsplit.com>.
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+# COMPILER_WARNINGS
+# ----------------------
+# Add configure option to enable additional compiler warnings and treat
+# them as errors.
+AC_DEFUN([COMPILER_WARNINGS],
+[AC_ARG_ENABLE(compiler-warnings,
+	AS_HELP_STRING([--enable-compiler-warnings],
+	               [Enable additional compiler warnings]),
+[if test "x$enable_compiler_warnings" = "xyes"; then
+	if test "x$GCC" = "xyes"; then
+                CFLAGS="-Wall -Werror $CFLAGS"
+        fi
+	if test "x$GXX" = "xyes"; then
+		CXXFLAGS="-Wall -Werror $CXXFLAGS"
+	fi
+fi])dnl
+])# COMPILER_WARNINGS
+
+# COMPILER_OPTIMISATIONS
+# ---------------------------
+# Add configure option to disable optimisations.
+AC_DEFUN([COMPILER_OPTIMISATIONS],
+[AC_ARG_ENABLE(compiler-optimisations,
+	AS_HELP_STRING([--disable-compiler-optimisations],
+		       [Disable compiler optimisations]),
+[if test "x$enable_compiler_optimisations" = "xno"; then
+	[CFLAGS=`echo "$CFLAGS" | sed -e "s/ -O[1-9]*\b/ -O0/g"`]
+fi])dnl
+])# COMPILER_OPTIMISATIONS
+
+# COMPILER_COVERAGE
+# ----------------------
+# Add configure option to enable coverage data.
+AC_DEFUN([COMPILER_COVERAGE],
+[AC_ARG_ENABLE(compiler-coverage,
+	AS_HELP_STRING([--enable-compiler-coverage],
+		       [Enable generation of coverage data]),
+[if test "x$enable_compiler_coverage" = "xyes"; then
+	if test "x$GCC" = "xyes"; then
+		CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
+	fi
+fi])dnl
+])# COMPILER_COVERAGE
diff --git a/m4/linker.m4 b/m4/linker.m4
new file mode 100644
index 000000000..8093cb88e
--- /dev/null
+++ b/m4/linker.m4
@@ -0,0 +1,73 @@
+# linker.m4 - autoconf macros for linker settings
+#
+# Copyright © 2005 Scott James Remnant <scott@netsplit.com>.
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+# LINKER_OPTIMISATIONS
+# --------------------
+# Add configure option to disable linker optimisations.
+AC_DEFUN([LINKER_OPTIMISATIONS],
+[AC_ARG_ENABLE(linker-optimisations,
+	AS_HELP_STRING([--disable-linker-optimisations],
+		       [Disable linker optimisations]),
+[if test "x$enable_linker_optimisations" = "xno"; then
+	[LDFLAGS=`echo "$LDFLAGS" | sed -e "s/ -Wl,-O[0-9]*\b//g"`]
+else
+	[LDFLAGS="$LDFLAGS -Wl,-O1"]
+fi], [LDFLAGS="$LDFLAGS -Wl,-O1"])dnl
+])# LINKER_OPTIMISATIONS
+
+# LINKER_VERSION_SCRIPT
+# --------------------------
+# Detect whether the linker supports version scripts
+AC_DEFUN([LINKER_VERSION_SCRIPT],
+[AC_MSG_CHECKING([for linker version script argument])
+for aranha_try_arg in "-Wl,--version-script"; do
+	aranha_old_libs="$LIBS"
+	LIBS="$LIBS $aranha_try_arg=conftest.ver"
+
+	cat >conftest.ver <<EOF
+TEST {
+	global:
+		*;
+};
+EOF
+
+	AC_TRY_LINK([], [], [
+		rm -f conftest.ver
+		LIBS="$aranha_old_libs"
+
+		AC_MSG_RESULT([$aranha_try_arg])
+		AC_SUBST(VERSION_SCRIPT_ARG, [$aranha_try_arg])
+		break
+	])
+
+	rm -f conftest.ver
+	LIBS="$aranha_old_libs"
+done
+
+AM_CONDITIONAL(HAVE_VERSION_SCRIPT_ARG, [test -n "$VERSION_SCRIPT_ARG"])
+if test -z "$VERSION_SCRIPT_ARG"; then
+	AC_MSG_RESULT([unknown])
+fi
+])dnl
+])# LINKER_VERSION_SCRIPT