From 6baa01c53e3ac9ed8b0aa1d20ff866a7d3f8b6b0 Mon Sep 17 00:00:00 2001
From: hexian000 <hexian000@outlook.com>
Date: Tue, 2 Jan 2024 10:44:29 +0800
Subject: [PATCH] build: fix posix builds

Signed-off-by: hexian000 <hexian000@outlook.com>
---
 CMakeLists.txt                   | 5 +++--
 contrib/csnippets/CMakeLists.txt | 2 +-
 m.sh                             | 2 +-
 src/CMakeLists.txt               | 4 ++--
 4 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5d68f34..7d33a2f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,7 +46,7 @@ message(STATUS "Project version: ${PROJECT_VERSION_STRING}")
 
 include(CTest)
 
-option(TARGET_POSIX "Use POSIX API only" OFF)
+option(FORCE_POSIX "Use POSIX-compliant APIs only" OFF)
 option(BUILD_STATIC "Build static executables, link everything statically" OFF)
 option(LINK_STATIC_LIBS "Link against static libraries" OFF)
 option(ENABLE_SANITIZERS "Build with sanitizers" OFF)
@@ -77,9 +77,10 @@ elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
     endif()
 endif()
 
-if(NOT TARGET_POSIX AND (CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android"))
+if(NOT FORCE_POSIX AND (CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android"))
     message(STATUS "Linux system: ${CMAKE_SYSTEM_NAME} ${CMAKE_SYSTEM_VERSION}")
     list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE")
+    set(TARGET_LINUX TRUE)
 else()
     message(STATUS "POSIX-compliant system: ${CMAKE_SYSTEM_NAME} ${CMAKE_SYSTEM_VERSION}")
     list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_POSIX_C_SOURCE=200809L")
diff --git a/contrib/csnippets/CMakeLists.txt b/contrib/csnippets/CMakeLists.txt
index 058eab3..b355b15 100644
--- a/contrib/csnippets/CMakeLists.txt
+++ b/contrib/csnippets/CMakeLists.txt
@@ -4,7 +4,7 @@ target_compile_options(csnippets PUBLIC "-include${CMAKE_CURRENT_BINARY_DIR}/con
 target_compile_options(csnippets PRIVATE -pedantic -Wall -Wextra)
 target_compile_definitions(csnippets PUBLIC MCACHE_STATS=0)
 
-if(NOT TARGET_POSIX AND (CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android"))
+if(TARGET_LINUX)
     target_compile_definitions(csnippets PRIVATE _GNU_SOURCE)
 else()
     target_compile_definitions(csnippets PRIVATE _POSIX_C_SOURCE=200809L)
diff --git a/m.sh b/m.sh
index a5e2539..143751e 100755
--- a/m.sh
+++ b/m.sh
@@ -67,7 +67,7 @@ case "$1" in
     cmake -G "${GENERATOR}" \
         -DCMAKE_BUILD_TYPE="Release" \
         -DCMAKE_EXPORT_COMPILE_COMMANDS=1 \
-        -DTARGET_POSIX=1 \
+        -DFORCE_POSIX=1 \
         -S "." -B "build"
     nice cmake --build "build"
     ls -lh "build/src/kcptun-libev"
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bfb5342..9216ab0 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -11,7 +11,7 @@ add_executable(kcptun-libev main.c
     obfs.c obfs.h
     event_tcp.c event_kcp.c event_pkt.c event_http.c event_timer.c event.h event_impl.h)
 
-if(NOT TARGET_POSIX AND (CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android"))
+if(TARGET_LINUX)
     target_compile_definitions(kcptun-libev PRIVATE _GNU_SOURCE)
 else()
     target_compile_definitions(kcptun-libev PRIVATE _POSIX_C_SOURCE=200809L)
@@ -71,7 +71,7 @@ if(WITH_SODIUM)
     set(WITH_CRYPTO TRUE)
 endif()
 
-if(WITH_CRYPTO AND (CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android"))
+if(WITH_CRYPTO AND TARGET_LINUX)
     set(WITH_OBFS TRUE)
 endif()