diff --git a/Makefile.install b/Makefile.install
index 6892efa510..129ed9a137 100644
--- a/Makefile.install
+++ b/Makefile.install
@@ -14,6 +14,9 @@ endif
 ifeq ($(INTERFACE64),1)
 USE_64BITINT=1
 endif
+ifeq ($(USE_OPENMP),1)
+	FOMP_OPT:= -fopenmp
+endif
 
 PREFIX ?= /opt/OpenBLAS
 
@@ -178,6 +181,7 @@ endif
 	@echo 'libnamesuffix='$(LIBNAMESUFFIX) >> "$(PKGFILE)"
 	@echo 'libsuffix='$(SYMBOLSUFFIX) >> "$(PKGFILE)"
 	@echo 'includedir='$(OPENBLAS_INCLUDE_DIR) >> "$(PKGFILE)"
+	@echo 'omp_opt='$(FOMP_OPT) >> "$(PKGFILE)"
 	@echo 'openblas_config= USE_64BITINT='$(INTERFACE64) 'DYNAMIC_ARCH='$(DYNAMIC_ARCH) 'DYNAMIC_OLDER='$(DYNAMIC_OLDER) 'NO_CBLAS='$(NO_CBLAS) 'NO_LAPACK='$(NO_LAPACK) 'NO_LAPACKE='$(NO_LAPACKE) 'NO_AFFINITY='$(NO_AFFINITY) 'USE_OPENMP='$(USE_OPENMP) $(TARGET) 'MAX_THREADS='$(NUM_THREADS)>> "$(PKGFILE)"
 	@echo 'version='$(VERSION) >> "$(PKGFILE)"
 	@echo 'extralib='$(PKG_EXTRALIB) >> "$(PKGFILE)"
diff --git a/cmake/openblas.pc.in b/cmake/openblas.pc.in
index 9526d2df6e..374221b47f 100644
--- a/cmake/openblas.pc.in
+++ b/cmake/openblas.pc.in
@@ -9,5 +9,5 @@ Name: OpenBLAS
 Description: OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version
 Version: @OpenBLAS_VERSION@
 URL: https://github.com/OpenMathLib/OpenBLAS
-Libs: @OpenMP_C_FLAGS@ -L${libdir} -l${libnameprefix}openblas${libnamesuffix}${libsuffix} 
-Cflags: -I${includedir}
+Libs: -L${libdir} -l${libnameprefix}openblas${libnamesuffix}${libsuffix} 
+Cflags: -I${includedir} @OpenMP_C_FLAGS@ 
diff --git a/openblas.pc.in b/openblas.pc.in
index 23804f4a2a..d9bb845499 100644
--- a/openblas.pc.in
+++ b/openblas.pc.in
@@ -4,4 +4,4 @@ Version: ${version}
 URL: https://github.com/xianyi/OpenBLAS
 Libs: -L${libdir} -l${libprefix}openblas${libnamesuffix}
 Libs.private: ${extralib}
-Cflags: -I${includedir}
+Cflags: -I${includedir} ${omp_opt}