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build: add -Dpie option

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It is becoming increasingly common for distributions to want to enable
PIE for all binaries and zig currently does not provide any way to do
so aside from patching the build.zig.
This commit is contained in:
Isaac Freund 2023-03-08 14:21:33 +01:00 committed by Andrew Kelley
parent 06b263825a
commit 3e99afdbfe
2 changed files with 9 additions and 0 deletions
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7
CMakeLists.txt
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@ -827,6 +827,12 @@ else()
set(ZIG_STATIC_ARG "")
endif()
if(CMAKE_POSITION_INDEPENDENT_CODE)
set(ZIG_PIE_ARG="-Dpie")
else()
set(ZIG_PIE_ARG="")
endif()
set(ZIG_BUILD_ARGS
--zig-lib-dir "${CMAKE_SOURCE_DIR}/lib"
"-Dconfig_h=${ZIG_CONFIG_H_OUT}"
@ -835,6 +841,7 @@ set(ZIG_BUILD_ARGS
${ZIG_STATIC_ARG}
${ZIG_NO_LIB_ARG}
${ZIG_SINGLE_THREADED_ARG}
${ZIG_PIE_ARG}
"-Dtarget=${ZIG_TARGET_TRIPLE}"
"-Dcpu=${ZIG_TARGET_MCPU}"
"-Dversion-string=${RESOLVED_ZIG_VERSION}"

2
build.zig
View File

@ -152,6 +152,7 @@ pub fn build(b: *std.Build) !void {
const link_libc = b.option(bool, "force-link-libc", "Force self-hosted compiler to link libc") orelse (enable_llvm or only_c);
const sanitize_thread = b.option(bool, "sanitize-thread", "Enable thread-sanitization") orelse false;
const strip = b.option(bool, "strip", "Omit debug information");
const pie = b.option(bool, "pie", "Produce a Position Independent Executable");
const value_tracing = b.option(bool, "value-tracing", "Enable extra state tracking to help troubleshoot bugs in the compiler (using the std.debug.Trace API)") orelse false;
const mem_leak_frames: u32 = b.option(u32, "mem-leak-frames", "How many stack frames to print when a memory leak occurs. Tests get 2x this amount.") orelse blk: {
@ -162,6 +163,7 @@ pub fn build(b: *std.Build) !void {
const exe = addCompilerStep(b, optimize, target);
exe.strip = strip;
exe.pie = pie;
exe.sanitize_thread = sanitize_thread;
exe.build_id = b.option(bool, "build-id", "Include a build id note") orelse false;
exe.install();