cmake: fix sdl3.pc for Nintendo 3DS + add to test matrix

.github/workflows/n3ds.yml

@@ -42,5 +42,14 @@ jobs:
             -DCMAKE_PREFIX_PATH=${{ env.SDL3_DIR }} \
             -DCMAKE_BUILD_TYPE=Release
           cmake --build cmake_config_build --verbose
-      # Not running test_pkgconfig.sh and test_sdlconfig.sh
-      # as invoking the compiler manually is not supported
+      - name: Extract CC/CXX/CFLAGS/CXXFLAGS from CMake toolchain
+        run: |
+          cmake -S .github/cmake -B /tmp/cmake_extract \
+            -DCMAKE_TOOLCHAIN_FILE=${DEVKITPRO}/cmake/3DS.cmake \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DVAR_PATH=/tmp/n3ds_env.txt
+          cat /tmp/n3ds_env.txt >> $GITHUB_ENV
+      - name: Verify sdl3.pc
+        run: |
+          export PKG_CONFIG_PATH=${{ env.SDL3_DIR }}/lib/pkgconfig
+          cmake/test/test_pkgconfig.sh

.github/workflows/ps2.yml

@@ -54,7 +54,7 @@ jobs:
     - name: Verify sdl3.pc
       run: |
         export CC=mips64r5900el-ps2-elf-gcc
-        export EXTRA_LDFLAGS="-L$PS2DEV/ps2sdk/ee/lib -L$PS2DEV/gsKit/lib -L$PS2DEV/ps2sdk/ports/lib"
+        export LDFLAGS="-L$PS2DEV/ps2sdk/ee/lib -L$PS2DEV/gsKit/lib -L$PS2DEV/ps2sdk/ports/lib"
         export PKG_CONFIG_PATH=${{ env.SDL3_DIR }}/lib/pkgconfig
         cmake/test/test_pkgconfig.sh
     

.github/workflows/psp.yml

@@ -43,6 +43,6 @@ jobs:
     - name: Verify sdl3.pc
       run: |
         export CC=psp-gcc
+        export LDFLAGS="-L$PSPDEV/lib -L$PSPDEV/psp/lib -L$PSPDEV/psp/sdk/lib"
         export PKG_CONFIG_PATH=${{ env.SDL3_DIR }}/lib/pkgconfig
-        export EXTRA_LDFLAGS="-L$PSPDEV/lib -L$PSPDEV/psp/lib -L$PSPDEV/psp/sdk/lib"
         cmake/test/test_pkgconfig.sh