From b30d130d929cf71bf47f363eae906be4c1810cd7 Mon Sep 17 00:00:00 2001
From: Christoffer Lerno <christoffer@aegik.com>
Date: Wed, 31 May 2023 18:33:06 +0200
Subject: [PATCH] Configurable Linux crt/crtbegin paths.

---
 src/build/build_options.c | 18 +++++++++++++++++-
 src/build/build_options.h |  9 +++++++++
 src/build/builder.c       |  2 ++
 src/build/project.c       |  6 ++++++
 src/compiler/linker.c     |  2 ++
 src/version.h             |  2 +-
 6 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/src/build/build_options.c b/src/build/build_options.c
index 17e290886..2b12fdba7 100644
--- a/src/build/build_options.c
+++ b/src/build/build_options.c
@@ -159,7 +159,11 @@ static void usage(void)
 	OUTPUT("  --wincrt=<option>         - Windows CRT linking: none, static, dynamic (default).");
 	OUTPUT("");
 	OUTPUT("  --macossdk <dir>          - Set the directory for the MacOS SDK for cross compilation.");
-
+	OUTPUT("  --macos-min-version <ver> - Set the minimum MacOS version to compile for.");
+	OUTPUT("  --macos-sdk-version <ver> - Set the MacOS SDK compiled for.");
+	OUTPUT("");
+	OUTPUT("  --linux-crt <dir>         - Set the directory to use for finding crt1.o and related files.");
+	OUTPUT("  --linux-crtbegin <dir>    - Set the directory to use for finding crtbegin.o and related files.");
 }
 
 
@@ -807,6 +811,18 @@ static void parse_option(BuildOptions *options)
 				options->path = check_dir(next_arg());
 				return;
 			}
+			if (match_longopt("linux-crt"))
+			{
+				if (at_end() || next_is_opt()) error_exit("error: --linux-crt needs a directory.");
+				options->linuxpaths.crt = check_dir(next_arg());
+				return;
+			}
+			if (match_longopt("linux-crtbegin"))
+			{
+				if (at_end() || next_is_opt()) error_exit("error: --linux-crtbegin needs a directory.");
+				options->linuxpaths.crtbegin = check_dir(next_arg());
+				return;
+			}
 			if (match_longopt("safe"))
 			{
 				options->safe_mode = 1;
diff --git a/src/build/build_options.h b/src/build/build_options.h
index c41de4e06..94a0c24f6 100644
--- a/src/build/build_options.h
+++ b/src/build/build_options.h
@@ -297,6 +297,10 @@ typedef struct BuildOptions_
 		const char *min_version;
 		const char *sdk_version;
 	} macos;
+	struct {
+		const char *crt;
+		const char *crtbegin;
+	} linuxpaths;
 	int build_threads;
 	const char** libraries_to_fetch;
 	const char** files;
@@ -456,6 +460,11 @@ typedef struct
 		WinCrtLinking crt_linking;
 		bool use_win_subsystem;
 	} win;
+	struct
+	{
+		const char *crt;
+		const char *crtbegin;
+	} linuxpaths;
 } BuildTarget;
 
 
diff --git a/src/build/builder.c b/src/build/builder.c
index 51a5893f2..1abe8352a 100644
--- a/src/build/builder.c
+++ b/src/build/builder.c
@@ -243,6 +243,8 @@ static void update_build_target_from_options(BuildTarget *target, BuildOptions *
 	if (options->macos.min_version) target->macos.min_version = options->macos.min_version;
 	if (options->macos.sdk_version) target->macos.sdk_version = options->macos.sdk_version;
 	if (options->win.crt_linking != WIN_CRT_DEFAULT) target->win.crt_linking = options->win.crt_linking;
+	if (options->linuxpaths.crt) target->linuxpaths.crt = options->linuxpaths.crt;
+	if (options->linuxpaths.crtbegin) target->linuxpaths.crtbegin = options->linuxpaths.crtbegin;
 	if (options->x86_vector_capability != X86VECTOR_DEFAULT)
 	{
 		target->feature.x86_vector_capability = options->x86_vector_capability;
diff --git a/src/build/project.c b/src/build/project.c
index 0e70bb80e..194d409c6 100644
--- a/src/build/project.c
+++ b/src/build/project.c
@@ -374,6 +374,12 @@ static void load_into_build_target(JSONObject *json, const char *type, BuildTarg
 	// macos-sdk-version
 	target->macos.sdk_version = get_valid_string(json, "macos-sdk-version", type, false);
 
+	// Linux crt
+	target->linuxpaths.crt = get_valid_string(json, "linux-crt", type, false);
+
+	// Linux crtbegin
+	target->linuxpaths.crtbegin = get_valid_string(json, "linux-crtbegin", type, false);
+
 	// version
 	const char *version = get_valid_string(json, "version", type, false);
 	if (version) target->version = version;
diff --git a/src/compiler/linker.c b/src/compiler/linker.c
index 8ea5d4651..c51a23a1f 100644
--- a/src/compiler/linker.c
+++ b/src/compiler/linker.c
@@ -340,6 +340,7 @@ static const char *find_freebsd_crt(void)
 
 static const char *find_linux_crt(void)
 {
+	if (active_target.linuxpaths.crt) return active_target.linuxpaths.crt;
 #if PLATFORM_POSIX
 	glob_t globbuf;
 	if (!glob("/usr/lib/*/crt1.o", 0, NULL, &globbuf) && globbuf.gl_pathc)
@@ -362,6 +363,7 @@ static const char *find_linux_crt(void)
 
 static const char *find_linux_crt_begin(void)
 {
+	if (active_target.linuxpaths.crtbegin) return active_target.linuxpaths.crtbegin;
 #if PLATFORM_POSIX
 	glob_t globbuf;
 	if (!glob("/usr/lib/gcc/*/*/crtbegin.o", 0, NULL, &globbuf) && globbuf.gl_pathc)
diff --git a/src/version.h b/src/version.h
index 7d6bd11ca..85d6fb96c 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define COMPILER_VERSION "0.4.518"
\ No newline at end of file
+#define COMPILER_VERSION "0.4.519"
\ No newline at end of file