build/llvmPackages: add --msimd-math to set -msimd option while compiling libpgmath

src/build/llvmPackages.ts

@@ -59,6 +59,8 @@ export interface LLVMPackageOptions {
     buildDir: (packageName: 'llvm' | 'libpgmath' | 'cflang') => string,
 
     platform: PackagePlatform;
+
+    enableLibpgmathSIMD: boolean;
 };
 
 export function llvmPackages({
@@ -68,6 +70,7 @@ export function llvmPackages({
     buildDir,
     cmakeDefinitionOverrides,
     spawnOverrides,
+    enableLibpgmathSIMD = false,
 }: LLVMPackageOptions & LLVMPackageOverrides): PackageTask[] {
     const rm = "rm";
     const cmake = "cmake";
@@ -135,13 +138,19 @@ export function llvmPackages({
             configurePhase: async () => {
                 await promisifySpawn(spawn(rm, ["-rf", build], spawnOptions));
 
+                // Flags shared between C and C++ compiler.
+                const cxFlags = ["-mlong-double-64"];
+                if (enableLibpgmathSIMD) {
+                    cxFlags.push("-msimd");
+                }
+
                 // Configure libpgmath.
                 await promisifySpawn(spawn(cmake, command({
                     definitions: variable({
                         ...general,
                         ...{
-                            CMAKE_C_FLAGS: "-mlong-double-64",
-                            CMAKE_CXX_FLAGS: "-mlong-double-64",
+                            CMAKE_C_FLAGS: cxFlags.join(" "),
+                            CMAKE_CXX_FLAGS: cxFlags.join(" "),
                             CMAKE_C_COMPILER: path.join(installPrefix, "bin", "clang"),
                             CMAKE_CXX_COMPILER: path.join(installPrefix, "bin", "clang++"),
                         } as GeneralVariable,